4.9
(14)
64
riders
33
rides
Mountain biking in Los Alamos County offers diverse terrain across a landscape shaped by ancient volcanic activity. The region is characterized by dramatic mesas, deep canyons, and the surrounding Jemez Mountains, providing varied elevations and technical challenges. Riders can expect trails that traverse the Pajarito Plateau, featuring sections with roots and rocks, alongside smoother singletrack. This unique geography creates a dynamic environment for mountain biking.
Last updated: May 10, 2026
4
riders
10.6km
00:45
620m
620m
Prepare for a moderate mountain biking adventure on the Pajarito Mountain loop, a route distinguished by its rugged, hand-built terrain. This challenging ride spans 6.6 miles (10.6 km) and includes a substantial elevation gain of 2043 feet (623 metres). You can anticipate completing the loop in approximately 44 minutes, navigating through diverse landscapes that will test your skills and provide a rewarding experience within the Pajarito Mountain Bike Park.
Before you begin, it is wise to confirm the current operating status and access details for the Pajarito Mountain Bike Park, as permits or fees may be required. An early start is often recommended for this route, particularly during warmer seasons, to take advantage of cooler temperatures and ensure ample time for your ride. Always check for any specific park regulations or seasonal closures that could affect your visit, ensuring a smooth and enjoyable outing.
The Pajarito Mountain loop stands out in the Los Alamos area for its dedicated mountain biking infrastructure and the unique character of its trails. This route offers a focused experience for riders looking for a specific type of terrain and challenge. Its design caters to mountain biking enthusiasts, making it a notable destination for those seeking an engaging ride in a managed park environment.
5.0
(3)
2
riders
12.8km
01:17
270m
270m
Embark on the American Springs Loop for an easy mountain biking adventure through Santa Fe National Forest. This 8.0-mile (12.8 km) route offers a varied experience, starting with mostly easy and flowy sections before transitioning to more challenging terrain with large embedded rocks in the upper half. You can expect to complete this ride, which gains 883 feet (269 metres) in elevation, in about 1 hour and 17 minutes, enjoying the natural New Mexico landscape.
Planning your ride on the American Springs Loop is straightforward, as the trail is easily accessible from several points. You can begin your mountain biking journey from the South Perimeter Trail, American Springs Road (FS 181), or after climbing Water Canyon. These multiple access points provide flexibility for you to choose your preferred starting location.
This singletrack route is nestled on a plateau between Water and Valles Canyons, offering a unique environment for your ride. The transition from smooth, flowing trails to sections with embedded rocks provides an engaging and dynamic experience. It's a great way to explore the diverse terrain and natural beauty of the region near Los Alamos.

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4
riders
10.5km
01:10
320m
320m
The Guaje Canyon Trail offers a moderate mountain biking experience, covering 6.5 miles (10.5 km) with an elevation gain of 1056 feet (322 metres). You can expect to complete this route in about 1 hour and 10 minutes. The trail winds through varied terrain, including the open meadows of Canada Bonito and beautiful aspen forests that are particularly vibrant in autumn, providing a compact dirt surface for much of the ride.
Before you head out, be aware that flash flooding can be a danger in canyon bottoms during thunderstorms, so always check weather conditions. The entry to the trail can sometimes be unmarked, so good navigation skills are helpful to find your way. Parking is generally available near the trailheads, such as around Pajarito Lodge and the base of the Aspen Lift.
This route provides a diverse mountain biking adventure, with initial sections from Camp May offering a gentle grade that is considered family-friendly. While parts of the historic canyon bottom trail are heavily damaged, this specific route navigates the more accessible and enjoyable sections, ensuring a pleasant ride through the canyon's unique landscape.
2
riders
10.2km
00:56
130m
130m
Embark on the Potrillo Canyon and Ruin Mesa Loop for an easy mountain biking experience that offers a mix of terrain suitable for beginners. This route covers 6.4 miles (10.2 km) with a gentle elevation gain of 417 feet (127 metres), typically taking about 55 minutes to complete. As you ride, you will encounter panoramic views of White Rock Canyon and the Santa Fe National Forest. Be sure to look for the expansive desert scenery from the Estante Rim Overlook, which provides a great vantage point. The trail offers vistas of the Rio Grande gorge, particularly as you navigate the Potrillo Canyon section.
This trail system is part of a larger network of multi-use trails, so you will be sharing the path with hikers and horses. It is generally well-signed, which helps with navigation through the various sections. The entire network is open to the public within the Los Alamos National Laboratory, so you should be mindful of any specific restrictions that may apply. Also, be aware of blind turns, especially when sharing the trail with others.
The canyon itself is geologically interesting, adding another layer to your outdoor adventure. This route provides a unique opportunity to explore the desert landscape and its natural features. You can enjoy the views of the Rio Grande gorge from different points along the trail, making it a notable option for those seeking a quick ride with scenic rewards.
3
riders
6.92km
00:38
90m
90m
The Kwage Mesa Loop offers an easy mountain biking experience, covering 4.3 miles (6.9 km) with a gentle 280 feet (85 metres) of elevation gain. You can expect to complete this ride in about 37 minutes. As you pedal, you will wind through sections of singletrack and dirt road, surrounded by piñon and juniper trees, providing a pleasant desert atmosphere.
This route is often one of the first to dry out in the spring, making it a great option for early-season mountain biking. Dogs are welcome to join you on the trail, but remember to keep them leashed for their safety and to protect local wildlife. Be aware of occasional uneven terrain, rocks, and cactus along the path.
From the eastern side of the loop, you will find excellent viewpoints that stretch across the surrounding canyons, offering glimpses of the Sangre de Cristo Mountains and the vast Rio Grande rift. This trail is a popular choice for its accessible nature and scenic vistas, providing a quick escape into the high desert landscape.
2
riders
25.4km
02:59
900m
900m
Embark on the Guaje Ridge and Perimeter Trail Loop for a classic Los Alamos mountain biking adventure. This moderate route spans 15.8 miles (25.4 km) and features a significant elevation gain of 2942 feet (897 metres), typically taking around 2 hours and 59 minutes to complete. You'll experience diverse landscapes, from lush sections to areas showing signs of past fires, with the climb up Pipeline Road offering excellent views before you hit the fast and twisty singletrack of Guaje Ridge.
For the best experience on this remote and challenging trail, plan your visit for late May or early June. This timing helps you avoid brushy conditions and thorns that can make the ride less enjoyable. Be prepared for the trail's technical challenges, especially in the lower parts of Guaje Ridge, which may include sections with significant erosion or even require some hike-a-bike if you're not highly proficient.
This loop is nestled within the Santa Fe National Forest, providing a true backcountry feel. It's known for its unique blend of natural beauty and demanding terrain, making it a standout mountain biking destination in the region. The mix of unburned forest and fire-affected zones tells a story of resilience and offers a varied backdrop to your ride.
2
riders
19.6km
02:29
820m
820m
Get ready for a moderate mountain biking adventure on the Quemazon, Guaje Ridge, and Perimeter Loop, covering 12.2 miles (19.6 km) with a significant 2694 feet (821 metres) of elevation gain. This route offers a diverse ride, starting with the Quemazon Trail where you'll navigate volcanic tuff rock and sandstone, opening up to great views as you climb the mesa. Later, the Perimeter Trail provides a cooler, forested environment, shaded by towering pines as it skirts the town, offering a different feel after the more exposed sections. You can expect to complete this challenging loop in about 2 hours and 28 minutes, making it a solid ride near Los Alamos.
When planning your visit, be aware that the Guaje Ridge section is best ridden in late May or early June, as it can become severely overgrown with thorn bushes later in the summer. This exposed part of the trail can also get very hot, so always bring plenty of water to stay hydrated. Navigation can be tricky, especially when trying to find the entry to Guaje Ridge, so make sure you have a reliable map or GPS device to guide you.
This loop takes you through the Santa Fe National Forest, offering a sense of remoteness with wide-open vistas on the rugged Guaje Ridge Trail. It's a great way to experience the varied landscapes of the area, from the open mesa climbs to the shaded forest paths. The combination of different trail characteristics makes this route a notable option for mountain bikers seeking a varied and engaging ride.
2
riders
14.7km
01:42
490m
490m
Get ready for a mountain biking adventure on the Quemazon/Pipeline Loop, a moderate route that packs a punch with its varied terrain. You will navigate everything from packed dirt to technical sections featuring volcanic tuff rock and small drops, making for an engaging ride. The trail covers 9.1 miles (14.7 km) and involves a significant climb of 1603 feet (489 metres), which you can expect to complete in about 1 hour and 41 minutes. As you ascend the mesa and traverse along canyon rims, you will be rewarded with outstanding panoramic views of Los Alamos and its surroundings. This loop offers both flowy singletrack and challenging rocky stretches, ensuring a dynamic experience for mountain bikers.
To begin your ride, you can access the Quemazon/Pipeline Loop from the Quemazon Trailhead, which offers generally available parking. Alternatively, if you prefer a different ascent, you can opt to start your climb via Pipeline Road. Before heading out, it is always a good idea to check local conditions to ensure the trail is open and safe for mountain biking. Planning your approach in advance will help you make the most of your time on this popular route.
This loop is a local favorite within the Santa Fe National Forest, known for its substantial elevation gain that contributes to a challenging feel despite its moderate rating. The diverse terrain and rewarding viewpoints make it a standout option for mountain bikers seeking a significant workout. You will find that the effort put into climbing is well rewarded with the expansive vistas and varied riding experience. It is a great way to explore the natural beauty and rugged landscape of the region.
2
riders
10.8km
00:59
160m
160m
You can mountain bike the easy White Rock Canyon Rim Trail Loop, a 6.7-mile (10.8 km) route that takes about 58 minutes to complete. As you ride, you'll gain 533 feet (162 metres) in elevation, offering a good workout without being overly strenuous. The trail follows the rim of the 900-foot-deep White Rock Canyon, providing continuous views of the Rio Grande below. You'll see ancient lava flows and unique geological features as you pedal along. This route is designed for mountain bikers looking for accessible and scenic riding.
Planning your ride on the White Rock Canyon Rim Trail Loop is straightforward. You will find parking conveniently located near the trailhead, making access simple. The route does not require any specific permits or fees, so you can focus on enjoying your ride. This makes it an easy option to consider if you are looking for a spontaneous mountain biking adventure.
The White Rock Canyon Rim Trail Loop offers more than just a ride; it's a journey through history and geology. As you follow the canyon rim, keep an eye out for hundreds of petroglyphs etched into the rocks. These ancient markings add a unique cultural dimension to your mountain biking experience. The trail's position high above the Rio Grande also gives you a clear perspective on the powerful forces that shaped this landscape. It's a notable route for its combination of accessible riding and rich historical context in the Los Alamos area.
13.5km
01:18
270m
270m
Embark on the Bayo/Pueblo Loop, an easy mountain biking route that spans 8.4 miles (13.5 km) and involves an elevation gain of 890 feet (271 metres). You can expect to complete this ride in about 1 hour and 17 minutes. As you pedal, you'll navigate a network of singletrack trails winding through Bayo Canyon and Pueblo Canyon. The scenery unfolds with distinctive orange cliffs made of volcanic tuff and peaceful Ponderosa pine forests. Make sure to pause at the North Bench Overlook for sweeping panoramic views of the canyon, Barranca Mesa, and the distant Sangre de Cristo Mountains. This route offers a diverse and engaging experience for mountain bikers.
When planning your ride on the Bayo/Pueblo Loop, be aware that these are multi-use trails. You will be sharing the path with hikers and equestrians, so remember to yield to other users. While much of the route is easy, some descents into Bayo Canyon feature technically challenging, rocky sections. These parts may require advanced skills or even hike-a-biking, so be prepared. Always check local conditions before heading out to ensure a smooth and safe trip.
This loop connects Bayo Canyon to Pueblo Canyon, showcasing the unique geology of the region. The landscape is characterized by its distinctive orange cliffs, which are formed from volcanic tuff. Keep an eye out for local wildlife, particularly mule deer, which are often spotted resting in the shaded areas of the Ponderosa pine forests. The trail network provides a great opportunity to explore the natural beauty and diverse terrain of the Los Alamos area.
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The Mitchell Trail is a very steep, switchbacking trail thats open to hikers and bikers. Although you can ride up it, it is so gravely, steep, and twisty that most use it as a downhill trail. This trail is very popular with hikers headed to the Los Alamos Arch (which you should check out too!) so be aware as you ride down.
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The Quemazon Trail is an excellent mountain biking and hiking trail on the westside of Los Alamos. It is typically ridden as a downhill trail accessed from either the Knapp/Los Alamos Canyon Trail or Pipeline Road, but it can be ridden uphill. The Quemazon Trail is a technical trail with stretches of flowy singletrack intermixed with rocks, ledges, and small drops to keep things interesting.
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The Technical Perimeter, as the name indicates, is the technical western side of Perimeter Trail system. This trail is mostly comprised of volcanic slickrock. It is not a fast trail, but it's a great trail if you're in the mood for some slower techy riding with great views.
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Pipeline Road is a rough, steep dirt road that takes you up to the Pajarito Mountain Ski Area and the Guaje Ridge. The road starts in town on the west side of the Perimeter Trail and is closed to cars and other motor vehicles. Although the climb is hard, the views are excellent.
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The Guaje Ridge Trail is a long, open trail that traverses the amazing ridges of several mountain tops (most unnamed) north of Los Alamos. This section of trail stretches from the intersection with the Mitchell Trail and the Upper Guaje Ridge Trail. Although you're only a few miles from town (as the crow flies), this is an incredibly remote feeling trail.
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The Bayo Canyon Trail runs from the rotary next to Loma Linda Park to the bottom of Bayo Canyon. The trail starts out on fast, flowy singletrack, but gets steadily more technical as you get close to the bottom of the canyon with steep drops and large rocks. At the bottom of the canyon the trail levels out again before turning into a dirt road that eventually leads out to the highway.
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The Kwage Mesa Trail is an easy, flat trail that takes you out into the desert northeast of Los Alamos, New Mexico. Archeologists have found evidence of human activity on the Kwage (KWA-hee) Mesa, which is also known as the Pajarito Plateau, dating back over 10,000 years. This unique trail is a great place to walk through both natural and human history close to town.
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The White Rock Canyon Rim Trail is a stunning trail that traverses the rim of White Rock Canyon, As you ride, you get amazing, panoramic views down the steep mesa to the Rio Grande River and over the open desert. This is a great trail for riders of all ability levels; it's generally flat with great views and a few rocky basalt steps to keep things interesting.
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Los Alamos County boasts an extensive network of over 200 miles of trails, with more than 30 routes specifically curated for mountain biking on komoot. These trails cater to various skill levels, from easy to advanced, offering diverse terrain across a landscape shaped by ancient volcanic activity.
You can expect a diverse range of terrain, shaped by the region's volcanic history. Trails often feature technical sections with roots and rocks, alongside smoother, faster singletrack. The landscape includes dramatic mesas and canyons, providing varied elevations and challenging ascents and descents. Some trails, like those on Pajarito Mountain, offer significant elevation changes, while others, such as the Kwage Mesa Loop, provide a less technical experience.
Yes, Los Alamos County offers several family-friendly and beginner-suitable mountain bike trails. The American Springs Loop is an easy 8-mile path through varied terrain. Another great option is the Kwage Mesa Loop, which is also easy and offers scenic views. The White Rock Canyon Rim Trail Loop is another easy route with stunning vistas.
For breathtaking views, consider trails that traverse the mesas and canyons. The White Rock Canyon Rim Trail Loop offers stunning vistas of the Rio Grande. The Kwage Mesa Loop also provides scenic views, often with historical context. Additionally, viewpoints like North Bench Overlook and White Rock Canyon Overlook are accessible near many trails, offering panoramic views of the Sangre de Cristo Mountains and the Rio Grande valley.
Yes, many mountain bike trails in Los Alamos County are designed as loops, offering a complete riding experience. Popular circular routes include the Pajarito Mountain loop, the American Springs Loop, and the Kwage Mesa Loop. For a longer ride, consider the Guaje Ridge and Perimeter Trail Loop.
Los Alamos County enjoys approximately 278 sunny days per year, making outdoor activities, including mountain biking, a year-round possibility. However, spring and fall generally offer the most pleasant temperatures for riding. Summer can be warm, especially at lower elevations, while winter may bring snow to higher trails, particularly on Pajarito Mountain.
Many trails in Los Alamos County's open space are dedicated to non-motorized use, which typically includes hiking, running, and mountain biking, often allowing dogs on leash. It's always best to check specific trail regulations before heading out, but generally, the region is welcoming to responsible dog owners. Trails like the American Springs Loop are popular choices for riders with canine companions.
Los Alamos County is rich in natural beauty and cultural history. Near the trails, you can explore sites like the Los Alamos Natural Arch or visit historical sites such as Ashley Pond Park and the Ancestral Pueblo Dwelling and the Romero Cabin. The region is also close to the Valles Caldera National Preserve and Bandelier National Monument, offering further exploration opportunities.
Parking is generally available at various trailheads throughout Los Alamos County. Specific parking information can often be found on individual trail pages or local park websites. For example, trails around Pajarito Mountain or within areas like Bayo Canyon typically have designated parking areas to accommodate riders.
The komoot community highly rates mountain biking in Los Alamos County, with an average score of 5.0 stars from over 10 reviews. Riders often praise the diverse terrain, from technical sections to smooth singletrack, and the stunning views offered by the dramatic mesas and canyons. The variety of trails catering to all skill levels is also frequently highlighted.
Yes, experienced riders seeking a challenge will find plenty of options. Pajarito Mountain is known for its advanced difficulty trails and dedicated bike park. Trails like the Pajarito Mountain loop offer significant elevation changes and technical sections. The Quemazon, Guaje Ridge, and Perimeter Loop is another moderate-to-difficult option that combines diverse terrain and scenic views.
While komoot focuses on trail information, mountain bike rentals are typically available from local outdoor gear shops or specialized bike stores in Los Alamos or nearby communities. It's advisable to check with local businesses for current rental options and availability before your visit.


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