Routes

Planner

Features

Updates

App

Login or Signup

Get the App

Login or Signup

Login or Signup

Routes
Bike touring routes & trails
France
Occitania
Mirande
Masseube

Lac de la Gimone and Sansan

Hard

1

riders

Lac de la Gimone and Sansan

06:01

91.5km

1,130m

Cycling

Cycle a difficult 56.9-mile loop through the Gers valley, exploring Lac de la Gimone and the world-renowned Paléosite de Sansan.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

Get Directions

1

19.2 km

Sansan paleosite

Highlight • Other

A 3 km path takes you in the footsteps of a Gers lawyer, Sansan, who in 1834 discovered a paleontological site which revolutionized scientific theories. Oddity: the site belongs to the National Museum of Natural History in Paris. More info: paleosite-sansan.com

Translated by Google •

Tip by

2

66.8 km

Château de Saint-Blancard

Highlight • Castle

Impressive 13th century castle. An association has been working on its rehabilitation since the 2000s. A medieval festival takes place in the village every year.

Translated by Google •

Tip by

3

71.6 km

Lac de la Gimone

Highlight • Lake

Very large body of water on the borders of Gascony, with a leisure center on its banks.

Translated by Google •

Tip by

B

91.5 km

End point

Parking

Loading

Way Types & Surfaces

Way Types

87.5 km

2.75 km

1.26 km

< 100 m

< 100 m

Surfaces

49.1 km

39.6 km

2.75 km

166 m

Sign up to see more specific route details

Sign up for free

Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (360 m)

Lowest point (170 m)

Sign up to see more specific route details

Sign up for free

Weather

Powered by Foreca

Tuesday 19 May

26°C

13°C

0 %

Additional weather tips

Max wind speed: 9.0 km/h

to get more detailed weather forecasts along your route

This route was planned by komoot.

Save

Edit route

Download GPX

Move start point

Print

Share

Embed on a website

Report an Issue

Frequently Asked Questions

What is the best time of year to cycle the Lac de la Gimone et paléosite de Sansan loop?

While the trail can be enjoyed in various seasons, spring and autumn generally offer the most pleasant cycling conditions with milder temperatures and beautiful Gers countryside scenery. Summer can be hot, and winter might bring colder, wetter weather, making the challenging route even more demanding.

Is this cycling route suitable for beginners?

No, this loop is explicitly categorized as a difficult bike ride. It spans over 91 kilometers with a substantial elevation gain of 1,130 meters, requiring excellent physical condition. Cyclists should be prepared for potential sections where they might need to dismount and push their bicycles.

What kind of terrain can I expect on the loop?

The route primarily features mostly paved surfaces, making it suitable for touring bikes. However, be aware that some segments might be unpaved and more difficult to navigate. You'll encounter rolling hills throughout the Gers countryside.

What are the main points of interest along the way?

The most distinguishing feature of this loop is the Sansan paleosite, renowned as one of the three most famous paleontological locations globally. You'll also pass by the picturesque Lac de la Gimone and the historic Château de Saint-Blancard.

Where can I park to access the Lac de la Gimone et paléosite de Sansan loop?

While specific parking locations aren't detailed, starting points for cycling tours often include areas near the Lac de la Gimone or the Sansan paleosite. Look for public parking facilities in nearby towns or designated areas around these highlights.

Are dogs allowed on the trail?

Information regarding specific dog regulations for the entire cycling loop is not available. However, if you plan to visit the Sansan paleosite, it's advisable to check their specific pet policy beforehand, as interpretive trails often have restrictions.

Do I need any permits or pay entrance fees for this cycling route or the Val de Gers area?

There are no general permits or entrance fees required to cycle this loop through the Val de Gers. However, if you plan to visit the interpretive trail at the Sansan paleosite, there might be an admission fee, as it is managed by the National Museum of Natural History of Paris. It's best to check their official website for current pricing.

Does this route intersect with other official cycling paths?

Yes, the route briefly intersects with sections of other official paths, including 'EN PASSANT PAR SAINT-ELIX', 'Chemin du Tupet de la Haille', and 'Chemin de Labarthe'.

What can I expect to see at the Sansan paleosite?

At the Sansan paleosite, you can explore a 2.5 to 3-kilometer interpretive trail. This trail features educational panels, fossil casts, and multimedia content accessible via QR codes, offering an immersive learning experience about the site's discovery, its scientific impact, and the ancient flora and fauna it reveals.

Are there places to eat or find accommodation near the route?

The loop passes through the Gers department, which has various small towns and villages. While specific establishments on the route aren't listed, you can typically find cafes, restaurants, and accommodation options in the larger towns along the way or near the Lac de la Gimone and Sansan paleosite. It's a good idea to plan your stops in advance.

What should I bring for a difficult touring bicycle ride like this?

Given the route's difficulty and length, you should bring plenty of water, energy snacks, a repair kit for your bike, appropriate cycling gear, and layers of clothing suitable for changing weather. A helmet is essential, and a fully charged phone with GPS is highly recommended for navigation.

Nearby routes

Moderate

4.5

3

Montmaurin Loop

01:39h

25.1km

370m

Explore
RoutesRoute plannerFeaturesHikesMTB TrailsRoad cycling routesBikepackingSitemap
Download the app
Follow Us on Socials

© komoot GmbH

Privacy Policy