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Union County

The best MTB trails in Union County

By Fede from komoot

·

Updated June 4, 2026

If you've ever tried to plan mountain biking in Union County, you know how quickly the options can feel overwhelming. Sifting through countless trails to find the ones genuinely worth your time and effort can be a real headache. That's where we come in. Our komoot community has ridden, mapped, and reviewed these routes, so we've curated a shortlist of the absolute best, saving you the guesswork.

Mountain biking in Union County, central Pennsylvania, is defined by its state parks, dense woodlands, and rolling hills. You can expect trails that navigate through forested areas, along creeks, and through gaps, offering a mix of moderate paths and truly challenging mountain bike trails with notable elevation changes. It’s a region that rewards those who love to earn their views.

If you only do one ride, make it the Raymond B. Winter State Park loop. This 22.0 miles (35.5 km) difficult route is the most popular for a reason, winding through varied terrain and showcasing the best of the park. For a slightly shorter, but still rewarding, experience, the Raymond B. Winter State Park via the Black Gap Trail offers a fantastic 10.9 miles (17.5 km) moderate path with a great mix of forest and scenic sections. With more than 20 mountain bikers already exploring Union County with komoot, you're in good company.

If you only do 3 of these routes

  1. 1

    Raymond B. Winter State Park loop
  2. 2

    Raymond B. Winter State Park via the Black Gap Trail
  3. 3

    Black Gap Trail loop from R. B. Winter State Park

Compare these routes at a glance

Trail

Distance

Elevation

Difficulty

Raymond B. Winter State Park loop

35.5 km

530 m

Hard

Raymond B. Winter State Park via the Black Gap Trail

17.5 km

290 m

Moderate

Black Gap Trail loop from R. B. Winter State Park

52.6 km

940 m

Hard

East Run Road loop from Williamsport

101 km

2,110 m

Hard

1.

Raymond B. Winter State Park loop

35.5km

03:16

530m

530m

The Raymond B. Winter State Park loop offers a demanding mountain biking experience through central Pennsylvania's varied terrain. You'll navigate challenging rock gardens, flowing singletrack, and winding trails through picturesque oak and pine forests, with views of Halfway Lake. This difficult 22.0 miles (35.5 km) route, featuring 1738 feet (530 metres) of elevation gain and an estimated duration of 3 hours and 15 minutes, is best suited for riders with advanced skills and good fitness who are ready for technical sections.

To tackle the Raymond B. Winter State Park loop, plan to start from the state park, which provides access to the extensive trail network within the Bald Eagle State Forest. While specific parking information for this particular loop isn't detailed, ample parking is typically available within the park. Always check current trail conditions, especially regarding water levels on trails like the Black Gap, before heading out for your ride.

What makes mountain biking at Raymond B. Winter State Park particularly notable is its seamless connection to the vast Bald Eagle State Forest, offering a wide array of options beyond this loop. The park itself sits in a sandstone basin, supporting Halfway Lake, and holds historical significance with its Civilian Conservation Corps-built dam. This region provides a dynamic riding experience, from moderate introductory trails to expert-level technical challenges, making it a compelling destination for advanced mountain biking.

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2.

Raymond B. Winter State Park via the Black Gap Trail

17.5km

01:31

290m

300m

The Black Gap Trail at Raymond B. Winter State Park offers a dynamic mountain biking adventure through central Pennsylvania's Ridge and Valley Province. You'll navigate a mix of rocky ridges, dense oak and pine forests, and flowing singletrack, with some challenging rock gardens. Keep an eye out for views of Halfway Lake and the lush mountain laurel and ferns that line the path. This moderate 10.9-mile (17.5 km) route with 962 feet (293 metres) of elevation gain typically takes around 1 hour and 31 minutes to complete.

Access the Black Gap Trail directly from Raymond B. Winter State Park. Be aware that the Middle section can be very wet for much of the year, sometimes resembling a creek, so plan your visit accordingly, perhaps aiming for drier seasons. While rated moderate, this trail requires advanced riding skills, so come prepared for technical sections and some short, punchy climbs.

Considered one of the most popular mountain biking trails in the region, the Black Gap Trail is a must-do for many riders. It's part of an extensive network within Bald Eagle State Forest, offering over 48 miles of off-road trails and nearly 100 miles of connecting forestry roads, allowing for varied route combinations and making it a versatile destination.

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Tips from the Community

Andrus
August 19, 2024, Black Gap Trail

The Black Gap Trail is one of the more popular trails in Bald Eagle State Forest. The trail is often covered in water in some sections as it crosses a number of creeks and drainages, and it has its fair share of rocky stretches to challenge more technical riders.

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Raymond B. Winter State Park, also known as R. B. Winter State Park, is a 695-acre park that is surrounded by Bald Eagle State Forest in the ridge and valley region of Pennsylvania.

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Lisa
February 8, 2024, Halfway Lake

This little spring-fed lake is a nice spot for swimming and trout fishing. It's not entirely clear how it got its name, but it does beg the question: Halfway to where?

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Raymond B. Winter State Park, also known as R. B. Winter State Park, is a 695-acre park that is surrounded by Bald Eagle State Forest in the ridge and valley region of Pennsylvania.

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beautiful ride

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Frequently Asked Questions

How many mountain bike trails are available in Union County?

Komoot features 6 mountain bike trails in Union County. These routes offer a variety of experiences, from moderate paths to challenging rides through diverse terrain.

Are there mountain bike trails suitable for beginners in Union County?

While Union County offers primarily moderate to difficult mountain bike trails, routes like the Raymond B. Winter State Park via the Black Gap Trail provide a good entry point for those with some experience, covering 17.5 km with moderate difficulty.

What are some challenging mountain bike trails in Union County?

For experienced riders seeking a challenge, Union County offers several difficult routes. The Sand Mountain Road – Front Mountain loop from Millheim is a demanding 131.3 km trail, while the East Run Road loop from Williamsport spans 100.6 km, both featuring significant elevation changes.

Are there any loop mountain bike trails in Union County?

Yes, many of the mountain bike trails in Union County are loops. Popular options include the difficult Raymond B. Winter State Park loop (35.5 km) and the longer, challenging Black Gap Trail loop from R. B. Winter State Park (52.6 km).

What is the best season for mountain biking in Union County?

Union County's mountain biking trails are generally best enjoyed from spring through fall. The dense woodlands and state parks offer beautiful scenery during these seasons. Winter conditions can make trails icy or muddy, requiring caution.

Are there mountain bike trails with convenient parking in Union County?

Many trails in Union County, particularly those within state parks like Raymond B. Winter State Park, offer designated parking areas. It's always advisable to check the specific tour details on komoot for parking information before you go.

What kind of terrain can I expect on mountain bike trails in Union County?

Mountain biking in Union County features diverse terrain, including dense woodlands, rolling hills, and paths along natural features like creeks and gaps. You can expect varied surfaces and notable elevation changes, providing a dynamic riding experience.

What do other mountain bikers enjoy most about mountain biking in Union County?

Mountain bikers on komoot frequently praise the diverse terrain and natural beauty of Union County. The region's state parks and forested areas offer engaging rides, with many appreciating the challenging climbs and scenic descents.

Are there any moderate-difficulty mountain bike trails in Union County?

Yes, Union County has moderate mountain bike trails suitable for riders looking for a less strenuous but still engaging experience. The Millheim, Pennsylvania – Penn's Creek loop from Millheim is a moderate 51.1 km route that takes you through scenic areas.

How long do mountain bike trails in Union County typically take to complete?

The duration of mountain bike trails in Union County varies significantly based on length and difficulty. Moderate routes like the Raymond B. Winter State Park via the Black Gap Trail can take around 1 hour 30 minutes, while more challenging and longer trails, such as the Sand Mountain Road – Front Mountain loop from Millheim, can require over 11 hours.

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