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Touring cycling routes in Fremont County, Idaho, traverse a landscape shaped by the Yellowstone caldera and the Teton mountain range foothills. The region features rolling farmland, bordered by national forests and major rivers such as the Henrys Fork and Falls River. Abandoned rail lines converted into trails, alongside paved and gravel county roads, offer varied terrain for cyclists. This environment provides a mix of moderate hills, river crossings, and scenic views.
Last updated: April 25, 2026
99.2km
07:28
640m
640m
Cycle the difficult 61.7-mile Ashton-Tetonia Rail Trail Loop through Idaho's Teton Valley, featuring Teton Mountain views and historic trest
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riders
44.2km
04:22
550m
550m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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2
riders
7.89km
00:42
20m
20m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
1
riders
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
2
riders
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
1
riders
32.5km
02:36
170m
170m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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See also https://youtu.be/j9FSPUdDfDQ?si=7v3oDZj_FVpttgvZ
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The Ashton-Tetonia Trail was once the path of the Teton Valley Branch of the Union Pacific Railroad between Tetonia and Ashton. Nowdays it connects the city through a well-maintained trail administered by the Idaho Department of Parks and Recreation and is managed through Harriman State Park. It passes by old trail stations, over three historic bridges, winding through small riparian riparian areas, with amazing views of the mountains.
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Ashton-Tetonia Trail offers a panoramic view of the Teton Mountains, its surrounding forest and the country side around the national park.
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Lamont Station is one of the old stops of the abandoned railroad line of the Teton Valley Branch. This railroad used to connect the villages of Ashton, Drummond, Lamont, Tetonia, Driggs and Victor.
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Scenic and teaming with wildlife Harriman State Park's Silver lake is a great place to ride on your way to/from Yellowstone. Or, you could stay for a while and avoid the crowds of the more famous neighbor while still have an incredible outdoor experience.
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The Ashton-Tetonia Trail opened to the public in 2010 and is administered by the Idaho department of Parks and Recreation and managed through Harriman State Park. This 29.6 mile trail follows the abandoned railroad grade of the Teton Valley Branch of the Union Pacific Railroad between Tetonia and Ashton. parksandrecreation.idaho.gov/parks/ashton-tetonia-trail
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The majestic Grand Teton summits are snowcapped into summer, forming a spectacular view for the entire 30 miles of the excellent dedicated bike trail between Tetonia and Ashton
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The Ashton-Tetonia Trail opened to the public in 2010 and is administered by the Idaho department of Parks and Recreation and managed through Harriman State Park. This 29.6 mile trail follows the abandoned railroad grade of the Teton Valley Branch of the Union Pacific Railroad between Tetonia and Ashton. parksandrecreation.idaho.gov/parks/ashton-tetonia-trail
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Fremont County, Idaho, offers a diverse landscape for touring cyclists. You'll find routes traversing rolling farmland, river valleys, and forested sections along the rim of the Yellowstone caldera. Many routes utilize abandoned rail lines converted into trails, as well as paved and gravel county roads, providing a mix of moderate hills and scenic views.
Yes, Fremont County offers several easy touring cycling routes. For instance, the Silver Lake loop from Thurman Creek is an easy 7.9 km (4.9 miles) path, and the Golden Lake loop from Island Park is another easy option spanning 13.1 km (8.1 miles).
Many touring cycling routes in Fremont County are designed as loops, allowing you to start and end at the same point. Examples include the challenging Ashton-Tetonia Rail Trail Loop, the moderate The Pines At Island Park loop from SpringHill Suites Island Park Yellowstone, and the easy Golden Lake – Silver Lake loop from Island Park.
Fremont County is rich in natural beauty. Along your rides, you might encounter stunning features like Upper Mesa Falls, the serene Silver Lake, or the unique Striped Rock Formations in Caribou-Targhee National Forest. The region is also bordered by national forests and major rivers like the Henrys Fork and Falls River.
Yes, a significant feature of touring cycling in Fremont County, Idaho, is the use of abandoned rail lines converted into trails. The Ashton-Tetonia Rail Trail Loop is a prime example, following a converted rail line and crossing several rivers.
The best time for touring cycling in Fremont County is generally during the warmer months when the weather is mild and the trails are clear. The region's diverse landscapes, from rolling farmlands to forested areas, are particularly scenic in spring, summer, and early autumn.
For cyclists seeking a challenge, routes like the McRenolds Reservoir loop from Judkins offer significant elevation gain. This difficult 44.2 km (27.5 miles) path provides a strenuous workout with rewarding views.
Fremont County's diverse ecosystems, including national forests and river valleys, are home to various wildlife. While cycling, you might spot deer, elk, and a variety of bird species. Always maintain a respectful distance and be aware of your surroundings.
Yes, several routes in Fremont County feature lakes. The Golden Lake loop from Island Park and the Golden Lake – Silver Lake loop from Island Park are excellent choices for cycling alongside these serene bodies of water.
The touring cycling routes in Fremont County are well-regarded by the komoot community, with over 10 touring cyclists having explored the varied terrain. Riders often praise the scenic views, the mix of paved and gravel roads, and the unique experience of cycling through areas shaped by the Yellowstone caldera and Teton foothills.
Absolutely. The The Pines At Island Park loop from SpringHill Suites Island Park Yellowstone is a moderate 37.1 km (23.1 miles) trail that leads through beautiful forested sections, offering a different kind of scenic experience.
There are 8 touring cycling routes detailed in this guide for Fremont County, offering a range of difficulties from easy to difficult. These routes provide diverse experiences across the region's unique landscapes.


Check out more Cycling routes throughout Fremont County below and find the perfect route in your destination.
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