Highlight • River
Hiking
5.0
(10)
The Big Thompson River is a vital waterway in northern Colorado, originating at an elevation around 2277 meters (7,470 feet) within Forest Canyon in Rocky Mountain National Park, near the Mummy Range. This approximately 78-mile-long river flows eastward through Moraine Park, into Lake Estes, and then carves its way through the dramatic Big Thompson Canyon before joining the South Platte River near Greeley. It is a significant tributary known for its natural beauty and diverse ecosystems.
Visitors consistently praise the Big Thompson River for its scenic beauty and the abundance of recreational opportunities it offers. Many find it a nice sight along the trail, appreciating the tranquil flow and the dramatic canyon walls. It's particularly celebrated as a popular local spot for fishing, drawing anglers seeking brown, rainbow, and brook trout in its clear waters.
Before embarking on an adventure along the Big Thompson River, it's wise to prepare for varying terrain and conditions. Highway 34 closely parallels the river through the canyon, providing numerous access points and scenic pull-offs for parking. While much of the river is easily accessible, some hiking trails can be rugged, so appropriate footwear is recommended. Anglers should ensure they have the necessary permits for fishing Big Thompson River waters.
The Big Thompson River offers year-round appeal, with the best time of year to visit often depending on your preferred activity. Summer is ideal for tubing and enjoying the warmer weather, while spring and fall provide excellent conditions for hiking and fishing. Whitewater rafting and kayaking are popular during higher water levels, typically in late spring and early summer. The scenic drives and viewpoints along the river are enjoyable in any season, offering opportunities for wildlife viewing.
Whether you're casting a line into a peaceful eddy, hiking along its banks, or simply enjoying a scenic drive, the Big Thompson River provides memorable experiences. The dramatic rock formations of the canyon, the potential for spotting elk and deer, and the serene sound of flowing water create a truly immersive natural setting. It’s a place where the beauty of the Colorado landscape truly shines.
To explore the many Big Thompson River trails and routes, komoot offers a variety of options for hikers, cyclists, and trail runners. You can discover detailed maps for family-friendly activities Big Thompson River has to offer, or plan a challenging whitewater adventure. With numerous scenic drives and viewpoints, there are routes for every interest and fitness level, inviting you to experience this iconic Colorado river.
Tips
October 23, 2023
Hiking

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Nearby routes
Best routes near Big Thompson River

4.2
(9)
162
hikers
6.22km
01:38
50m
50m
Lake Estes Trail offers an easy, paved 3.9-mile loop with continuous views of Lake Estes and the Rocky Mountains, perfect for all skill leve

4.0
(2)
44
hikers
5.15km
01:20
30m
30m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

9
hikers
3.11km
00:48
10m
10m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
Details
Informations
Elevation 2,280 m
Weather
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Monday 1 June
19°C
6°C
52 %
Additional weather tips
Max wind speed: 4.0 km/h
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Several trails offer excellent opportunities to explore the Big Thompson River. Within Rocky Mountain National Park, the Cub Lake Trail passes near the river's headwaters. Further downstream, the Dunraven Trail and the North Fork Trail follow or cross the river, providing spectacular views and chances for wildlife observation. These trails vary in difficulty, so it's advisable to check specific trail conditions before heading out.
The terrain along the Big Thompson River varies significantly from its source in Rocky Mountain National Park to the plains. The river dramatically descends over 6,600 feet (2,000 meters) in elevation. While many sections along Highway 34 offer relatively easy access and scenic viewpoints, some hiking trails, especially closer to the headwaters, can be rugged and involve significant elevation changes. Always wear appropriate footwear and be prepared for diverse conditions.
Numerous access points and scenic pull-offs for parking are available along Highway 34, which parallels the river through the canyon. Additionally, county parks like Glade Park, The Narrows, Forks Park, and Sleepy Hollow Park provide public river access with parking. For fishing, anglers must obtain the necessary permits and licenses as required by Colorado state regulations. Whitewater rafting and kayaking may also have specific access points and regulations depending on the outfitter or section of the river.
While the Big Thompson River offers year-round appeal, winter conditions can be challenging. Scenic drives through the canyon are generally accessible, offering beautiful snow-covered views. However, hiking trails may be icy or covered in deep snow, requiring appropriate winter gear like microspikes or snowshoes. Always check local weather and trail conditions before attempting winter activities, especially within Rocky Mountain National Park.
Yes, the Big Thompson River area offers several family-friendly activities, including easy walks along paved paths in Estes Park or picnicking at various county parks. Many sections of the river are popular for tubing during summer months. For dog owners, many trails in the surrounding areas are dog-friendly, though specific regulations may apply within Rocky Mountain National Park or certain protected areas. Always keep dogs on a leash and clean up after them.
The Big Thompson Canyon is rich in wildlife. Visitors frequently spot elk, white-tailed deer, and wild turkeys. The river itself is home to various fish species, including brown, rainbow, and brook trout. Birdwatchers can look for raptors and numerous songbirds. Keep an eye out for smaller mammals like mink near the water's edge. Early mornings and late evenings are often the best times for wildlife viewing.
Yes, the Big Thompson River has significant historical importance. Four crossings and bridges along the river are listed on the U.S. National Register of Historic Places. The river also flows through the dramatic Big Thompson Canyon, a natural feature carved by the river over millennia. The Colorado-Big Thompson Project, a major water diversion system, is another notable engineering feat associated with the river, playing a crucial role in regional water supply.
For whitewater rafting or kayaking, essential gear includes a wetsuit or drysuit (depending on water temperature), a helmet, a personal flotation device (PFD), and appropriate footwear that can get wet and offers good grip. It's also wise to bring sun protection, a waterproof bag for personal items, and plenty of water. Always go with experienced guides or ensure you have the necessary skills and safety equipment for the river's conditions.
While popular areas like Estes Park and the main canyon can get busy, exploring some of the smaller county parks along the river, such as Glade Park or Sleepy Hollow Park, can offer a more tranquil experience. Additionally, venturing onto less-trafficked hiking trails away from the main road can reveal secluded spots and unique viewpoints. Early mornings or weekdays are generally best for avoiding crowds.
Both the Big Thompson River and the Cache la Poudre River offer excellent opportunities for water sports in Colorado, but they have distinct characteristics. The Big Thompson is renowned for its scenic beauty and fishing, with some sections suitable for tubing and whitewater rafting during higher flows. The Cache la Poudre, however, is often considered a premier destination for more consistent and challenging whitewater rafting, particularly for those seeking a more intense experience. The choice often depends on the desired level of adventure and specific water conditions.
The drive along Highway 34 through the Big Thompson Canyon offers numerous pull-offs and designated viewpoints where you can stop and admire the dramatic rock formations and the river below. Areas near Lake Estes and Moraine Park also provide picturesque views, especially during sunrise or sunset. For hikers, trails like the Dunraven Trail offer elevated perspectives of the canyon's grandeur.