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France
Bourgogne-Franche-Comté
Besançon

By

The best MTB trails around By

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.

Best mountain bike trails around By

  • The most popular mountain bike trail is Port-Lesney Bridge – Château de Vaulgrenant loop from Port-Lesney,…

Last updated: May 9, 2026

4.4

(7)

52

riders

#1.

Port-Lesney Bridge – Champagne-sur-Loue Bridge loop from Marnoz

33.4km

02:58

700m

700m

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

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Moderate

Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard
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Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

Moderate

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

Moderate
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Popular around By

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Tips from the Community

Ronny F 3333 🚵‍♀️🧗‍♂️
February 28, 2026, Pont de Port-Lesney

The segmental arch bridge dates from the 15th century.

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Here you can cool off wonderfully

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Beautiful, very varied walk

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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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Frequently Asked Questions

How many mountain bike trails are there in By?

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.

What skill levels do the mountain bike trails around By cater to?

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.

What do other mountain bikers say about the trails in By?

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.

Are there any easy mountain bike trails suitable for beginners in By?

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.

Can I find circular mountain bike routes in By?

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.

Are there mountain bike trails that feature waterfalls in By?

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.

What kind of landscapes can I expect on mountain bike trails in By?

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.

Are there any historical sites or landmarks accessible by mountain bike in By?

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.

What are some natural attractions to see along the mountain bike trails in By?

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.

Are there any mountain bike trails near By that offer scenic river views?

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.

What is the best time of year for mountain biking in By?

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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