4.3
(108)
469
riders
65
rides
Mountain bike trails around By traverse a landscape characterized by river valleys, dense woodlands, and varied elevation changes. The region offers a mix of terrain, from paths alongside waterways to routes with moderate climbs. Riders can explore areas featuring bridges, historical sites, and natural attractions like waterfalls. This diverse environment provides a range of mountain biking experiences.
Last updated: May 9, 2026
4.4
(7)
52
riders
33.4km
02:58
700m
700m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
5.0
(2)
31
riders
14.5km
01:45
690m
700m
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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12
riders
33.9km
02:56
720m
720m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.2
(5)
17
riders
42.8km
03:47
870m
870m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
1.0
(1)
19
riders
7.87km
00:51
360m
360m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
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The segmental arch bridge dates from the 15th century.
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Here you can cool off wonderfully
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Chenecey Buillon belvedere
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ideal for sheltering from bad weather
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The Roche du Feu lookout point, near Mesnay, is a must for mountain bikers looking for panoramic views. Accessible via technical trails, it peaks at 543 metres, offering a breathtaking view of the Planches valley and the limestone cliffs of the Jura. The varied descents through forests and rocky paths add a touch of adrenaline. It is an ideal spot for a break before getting back on the slopes.
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Iconic 17th century chapel built following a vow made by the population to thank the Virgin Mary for protecting the inhabitants from epidemics and during the Thirty Years' War. It has an oval plan and is surmounted by a recently renovated dome with glazed roof tiles, a lantern tower and a bell tower. https://www.coeurdujura-tourisme.com/
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The ascent to the cross is car-friendly and has steps. The GR59 may have been rerouted in the meantime, but a detour here is definitely justified. The paths on Mt Poupet are well signposted and the summit cross is highly recommended.
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There are over 60 mountain bike trails available around By, offering a diverse range of experiences for riders. These routes traverse river valleys, dense woodlands, and areas with varied elevation changes.
The trails in By cater to a wide range of skill levels. You'll find 6 easy routes perfect for beginners or a relaxed ride, 51 moderate trails for those seeking a bit more challenge, and 9 difficult routes for experienced mountain bikers looking for technical terrain.
The mountain bike trails around By are highly rated by the komoot community, with an average score of 4.4 stars from over 160 reviews. Riders often praise the varied terrain, scenic river valleys, and the presence of natural attractions like waterfalls.
Yes, By offers several easy mountain bike trails. An excellent option is the Along the Loue – Royal Saltworks of Arc‑et‑Senans loop from Port-Lesney, which is 18.2 miles (29.3 km) long and features minimal elevation gain, making it ideal for a relaxed ride.
Many of the mountain bike routes in By are designed as loops, allowing you to start and end in the same location. For example, the Bridge and tunnel – An original garden loop from Port-Lesney is a 22.7 miles (36.5 km) circular trail that offers varied scenery.
Absolutely. The region is known for its water features. You can explore the Lison Waterfalls – Lison Valley loop from Alaise, a 15.0 miles (24.2 km) trail that leads directly through a valley featuring beautiful waterfalls. You can also visit the Lison Waterfalls highlight directly.
Mountain biking in By offers diverse landscapes characterized by river valleys, dense woodlands, and varied elevation changes. You'll encounter paths alongside waterways, routes with moderate climbs, and areas featuring bridges and historical sites, providing a rich natural and cultural experience.
Yes, the region around By has several interesting landmarks. The Port-Lesney Bridge – Château de Vaulgrenant loop from Port-Lesney connects a historic bridge with a château. You can also visit the Royal Saltworks of Arc-et-Senans, a UNESCO World Heritage site, which is accessible via some routes.
Beyond the Lison Waterfalls, the area boasts several natural attractions. You can discover the Lison Spring and Verneau Spring, both significant cave systems, or the dramatic Creux Billard — Karst Basin and Waterfall, offering unique geological formations.
Many trails in By follow river valleys, providing beautiful waterside views. The Quingey Bridge – Beauty and swimming loop from Saint-Thiébaud is a moderate 26.6 miles (42.8 km) path that offers extensive scenic views along a river and through natural areas.
The varied terrain of By, with its woodlands and river valleys, makes it suitable for mountain biking through much of the year. Spring and autumn generally offer pleasant temperatures and vibrant scenery, while summer provides longer daylight hours. Always check local conditions before heading out.


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