The best MTB trails in Jefferson County
157
riders
24
rides
Mountain biking in Jefferson County, Montana, offers a diverse range of trails across its hills and mountains. The region is characterized by an abundance of fire roads and single-track trails, providing scenic views of the "Big Sky country." Riders can experience varied terrain, from challenging climbs to flowing descents, within this mountainous landscape.
Best mountain bike trails in Jefferson County
- The most popular mountain bike trail is Mount Ascension: Entertainment and Little Moab Loop, a 6.1 miles (9.9 km) trail that takes 1 hour 8 minutes to complete. This moderate route features varied terrain around Mount Ascension.
- Another top favourite among local mountain bikers is Eddye McClure Loop, a moderate 7.0 miles (11.3 km) path. This route offers a mix of ascents and descents through the local hills.
- Local mountain bikers also love the Entertainment and Aftershock Loop, a 5.3 miles (8.5 km) trail leading through mountainous terrain, often completed in about 1 hour 2 minutes.
- Mountain biking in Jefferson County is defined by its single-track trails, fire roads, and mountainous landscapes. The network offers options for various ability levels, from moderate to difficult routes.
- The guide includes highly-rated routes that showcase the best of the region's landscape. More than 150 mountain bikers have used komoot to explore Jefferson County's varied terrain.
Last updated: May 10, 2026
9
riders
9.85km
01:08
350m
360m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
5
riders
11.3km
01:12
350m
360m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
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3
riders
8.50km
01:03
340m
340m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
28.5km
02:50
760m
760m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
22
riders
26.8km
03:07
890m
890m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
11
riders
13.3km
01:21
330m
330m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
11
riders
19.2km
02:08
610m
610m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
7
riders
44.8km
04:39
1,150m
1,160m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
6
riders
6.45km
00:41
170m
170m
Hard mountain bike ride. Great for any fitness level. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
6
riders
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
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Tips from the Community
These ruins near Helena are a beautiful testament to the area's rich industrial history. Despite appearing like mining smelters, these kilns produced quicklime from the local limestone before the 20th century. They have been designated as meaningful cultural heritage sites and are listed on the National Register of Historic Places. The city's impressive historic architecture owes much to the early lime industry, and although the kilns may seem sturdy, they are very fragile, so do not climb on or inside them. However, you can always take a moment to appreciate the ruins and capture some great photos.
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This is a steady climb with a few steeper sections toward the beginning (bottom) just after the trailhead takes off from the archery range road. This trail winds through aspen groves up high and the trial has seen a lot of work and improvement recently. This one would also be a lot of fun to descend. This trail connects the lower parking lot for Sage Brush Flats up to the Blacktail Loop.
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Hundreds of feet over the canyon below, you'll hoot and holler while you're riding across the safe old railroad trestle and onward to the tunnels!
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Mount Ascension is just outside of Helena and gives a nice view of the surrounding natural areas as well as the city. It is a well-maintained trail and open year-round, but in the winter, watch out for ice in the shady areas.
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This trail can be ridden in either direction but if you head east the downhill is more flowy whereas heading west is a bit more technical with all of the switchbacks.
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Little Moab gives you a taste of the famous Slickrock from the namesake Utah town. The trails isn't marked across the rock face as there are several rideable lines. Take your pick or do some laps to try them all.
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Lava Mountain Trail is technical enough to challenge most riders. It's also part of the Great Divide Mountain Bike Route so theoretically you could keep riding up to Alberta, Canada or down to the Mexican border.
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Thumbs up, you made it to the top of Mount Ascension! This is the spot to take a rest and refuel for the fun part is it's (almost) all downhill from here.
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Frequently Asked Questions
How many mountain bike trails are available in Jefferson County?
Jefferson County offers a wide selection of mountain bike trails, with over 25 routes available on komoot. These trails cater to various skill levels, from moderate to difficult, providing diverse options for riders.
What kind of terrain can I expect on mountain bike trails in Jefferson County?
Mountain biking in Jefferson County, Montana, features a diverse range of terrain, including an abundance of fire roads and single-track trails across its hills and mountains. Riders can expect varied landscapes, from challenging climbs to flowing descents, all set against the scenic 'Big Sky country' backdrop.
Are there trails suitable for beginners in Jefferson County?
While the majority of trails in Jefferson County are rated moderate to difficult, there are a few easier options available. For instance, komoot lists 2 trails specifically categorized as easy, which can be a good starting point for less experienced riders.
Are there challenging mountain bike routes for experienced riders in Jefferson County?
Yes, Jefferson County offers several challenging routes for experienced mountain bikers. There are 9 trails rated as difficult, such as the Little Moab Trail loop from Helena or the extensive Lime Kiln Ruins – Mount Helena Trail Junction loop from Lime Kiln Ruins, which features over 1200 meters of elevation gain.
Are there any loop trails for mountain biking in Jefferson County?
Many of the mountain bike trails in Jefferson County are designed as loops, offering a complete riding experience without retracing your path. Examples include the popular Mount Ascension: Entertainment and Little Moab Loop and the longer Lava Mountain loop.
What is the best time of year to go mountain biking in Jefferson County?
Jefferson County, Montana, experiences distinct seasons. While specific seasonal closures for mountain biking are not detailed in the guide data, the 'Big Sky country' generally offers excellent riding conditions from late spring through early autumn. Always check local conditions and weather forecasts before heading out, especially during shoulder seasons.
Are mountain bike trails in Jefferson County dog-friendly?
Information regarding specific dog rules for mountain bike trails in Jefferson County, Montana, is not explicitly provided in the guide data. However, many open spaces and national forest areas in Montana generally allow dogs on trails, often requiring them to be on a leash. It's always best to check with the specific land management agency for the trail you plan to ride to confirm their pet policies.
What are some interesting places to see near the mountain bike trails in Jefferson County?
While mountain biking, you can explore several interesting points. The Lava Mountain Trail itself is a highlight, and you might encounter the Abandoned Mine Ruins in Beaverhead-Deerlodge National Forest. The region's diverse ecosystems, including forests and mountains, offer scenic views throughout your ride.
Is parking available at the trailheads in Jefferson County?
Specific parking information for individual trailheads in Jefferson County, Montana, is not detailed in the guide. However, most popular mountain biking areas and open spaces typically provide designated parking facilities. It is advisable to research the specific trailhead you plan to visit for detailed parking instructions.
Can I access mountain bike trails in Jefferson County using public transport?
Public transport access to mountain bike trails in Jefferson County, Montana, is generally limited. Many trailheads are located in more remote, natural areas that are not typically served by public transportation. Personal vehicles are usually the most practical way to reach these trails.
Are there any specific rules or permits required for mountain biking in Jefferson County?
The guide does not specify any particular permits required for mountain biking in Jefferson County, Montana. However, it's always good practice to respect trail etiquette, stay on marked trails, and be aware of any local regulations or seasonal closures, especially when riding in open spaces or national forest lands.
What do other mountain bikers say about the trails in Jefferson County?
Over 150 mountain bikers have used komoot to explore Jefferson County's varied terrain. While specific reviews are not detailed here, the high number of visitors indicates a popular and well-regarded mountain biking destination, with riders often praising the single-track trails, fire roads, and mountainous landscapes that define the region.
Are there any less crowded mountain bike trails in Jefferson County?
While the guide highlights popular routes, Jefferson County's extensive network of trails, particularly in areas like the South Elkhorns, means there are likely less crowded options available. Exploring some of the longer or more challenging routes, such as the Skeeboggen Trail Ascent – Milwaukee Railroad Trestle loop, might offer a more secluded experience.
Most popular routes in Jefferson County
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