4.4
(28)
1,072
runners
132
runs
Jogging around Billecul offers a diverse landscape for runners, characterized by its river valleys, waterfalls, and varied terrain. The region features a mix of moderate and challenging running paths, with some routes exploring the sources of local rivers. Runners can expect elevation changes, including gentle hills and more significant climbs, providing options for different fitness levels.
Last updated: July 6, 2026
3.5
(2)
45
runners
8.80km
01:08
240m
230m
Jog the moderate 5.5-mile Source de l'Ain Loop in the Jura Mountains, featuring the river's source and Maillys Falls.
23
runners
30.2km
03:45
750m
750m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(2)
19
runners
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(2)
12
runners
4.16km
00:32
100m
100m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
17
runners
15.5km
01:53
330m
330m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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The Serpentine, (first tributary of the Ain river whose source is located a little higher) forms a small lake near the ruins of a mill. It is from a cornice that this beautiful natural waterfall 15 meters high comes to life when the water level is sufficient.
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This city in the Middle Ages was a highly strategic place. For more than 300 years, from the 13th to the 16th century, its inhabitants controlled the commercial exploitation of salt by establishing rights of passage for merchants who went to Switzerland. So you will find in its center many beautiful period houses, irrefutable testimonies of this ancient wealth. The castle of the princes of Oranges was destroyed, and did not stand the test of time.
0
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Very impressive, about 1 km walk from the parking lot nearby, swimming not possible and not recommended
0
0
At the source of the Ain, you will find footbridges and interpretation panels to help you navigate and understand the site. A beautiful and relaxing place to take a break from your run.
2
0
The river seems to weave through cracks in the bedrock before flowing into a crystal clear pool. Amazing geography.
2
0
From a small lake at the level of the mill, the river continues before cascading over a 15 meter high ledge. An amazing waterfall.
3
0
Billecul offers a wide selection of running routes, with over 120 trails to explore. These range from easy paths to more challenging runs, catering to various fitness levels.
Yes, Billecul has several options for beginners. There are 8 easy running routes, perfect for a gentle jog or a warm-up. These paths typically feature less elevation and shorter distances.
The terrain in Billecul is quite varied, characterized by river valleys, waterfalls, and diverse landscapes. You'll encounter a mix of moderate and challenging paths, with elevation changes ranging from gentle hills to more significant climbs, often exploring the sources of local rivers.
Absolutely. For those seeking a challenge, Billecul features 45 difficult running routes. An example is the Maillys Falls loop from Doye, which is a demanding 16.3-mile (26.2 km) path with significant elevation gain, passing by the impressive Maillys Falls.
Yes, Billecul is known for its natural beauty, including several waterfalls and scenic spots. Many routes incorporate these features, such as the Moulin du Saut Waterfall – Waterfall at the Source of the Ain loop from Doye, which takes you past the beautiful Moulin du Saut Waterfall. You can also visit the Roche Fendue Viewpoint for panoramic vistas.
Many of the running routes in Billecul are designed as loops, offering a convenient way to start and finish at the same point. For instance, the Waterfall at the Source of the Ain – Source de la rivière d'Ain loop from Conte is a 3.3-mile (5.3 km) circular trail that leads through river valleys and past the Ain river source.
The running routes in Billecul are highly regarded by the komoot community, with an average rating of 4.4 stars from over 20 reviews. Runners often praise the diverse terrain, the beauty of the river sources and waterfalls, and the variety of options for different ability levels.
Beyond the routes themselves, Billecul is rich in natural and historical attractions. You can discover the Ain Spring, the Maillys Falls, or the Saine Spring. For historical interest, consider visiting Syam Castle and Ironworks.
Billecul offers enjoyable running conditions throughout much of the year. Spring and autumn provide pleasant temperatures and vibrant scenery, while summer is ideal for exploring the river valleys. Winter running can be beautiful, but be prepared for colder conditions and potential snow, especially on higher trails.
Yes, some routes allow you to experience both the natural beauty and charming settlements of the region. For example, the The Source of the Ain – Maillys Falls loop from Nozeroy starts near the historic town of Nozeroy, offering a blend of scenic running and cultural exploration.
While some popular routes might see more foot traffic, with over 120 trails available, it's certainly possible to find quieter paths, especially if you venture onto the moderate or difficult trails, or explore during off-peak hours. The region's extensive network allows for plenty of space to enjoy a peaceful run.


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