4.5
(492)
5,693
riders
250
rides
Touring cycling around Merlas, located in the Isère department of southeastern France, offers diverse landscapes for cyclists. The commune is situated on a plateau overlooking the Ainan valley, with elevations ranging from 400 to 925 meters, providing a mix of climbs and descents. It is an integral part of the Chartreuse Regional Natural Park, characterized by lush forests and mountainous backdrops. Notable natural features include the Col des Mille Martyrs and Lac de Saint-Sixte, offering varied terrain for exploration.
Last updated: May 4, 2026
5.0
(1)
17
riders
15.3km
01:10
410m
410m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
8
riders
61.2km
04:18
1,160m
1,160m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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3.1
(9)
9
riders
30.8km
02:06
440m
440m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(2)
9
riders
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
16
riders
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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The village with 7 castles! To discover
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Nice place to cool off on a small pebble beach just before the bridge when it's a heatwave!
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magnificent loop with breathtaking views.
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Magnificent cycle path, a moment of full nature, 12km quite magical with a peat bog to visit in the middle. Ideal spot for a family return trip. Magnificent gravel track to integrate into a larger course.
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Very pleasant pass to climb, not too steep a slope, well marked all the way.
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Superb stone bridge in a very beautiful loop, accessible during the ascent or descent of the Col des Mille Martyrs, not to be missed!
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End of the climb and arrival on the plateau
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Merlas is situated on a plateau overlooking the Ainan valley, with elevations ranging from 400 to 925 meters. This diverse topography means you can expect a mix of challenging climbs and scenic descents, offering varied experiences for touring cyclists. The region is also part of the Chartreuse Regional Natural Park, featuring lush forests and mountainous backdrops.
Yes, Merlas offers a wide selection of touring cycling routes. There are over 240 routes in the area, catering to various skill levels. You'll find approximately 30 easy routes, 90 moderate routes, and over 120 difficult routes, ensuring options for every cyclist.
Merlas is rich in natural beauty and landmarks. You can cycle past the Col des Mille Martyrs, a recognized natural zone, and enjoy views of Lake Paladru. The Gorges du Guiers Vif also offer splendid views from both the balcony road and the old road. Other points of interest include the Gorges du Crossey and the Old Saint-Martin Bridge.
The touring cycling routes in Merlas are highly regarded by the komoot community, with an average rating of 4.5 stars from over 470 reviews. More than 5,000 touring cyclists have used komoot to explore the varied terrain, often praising the diverse landscapes and the beauty of the Chartreuse Regional Natural Park.
Yes, many routes in Merlas are designed as loops, offering convenient circular tours. For example, you could try the moderate Col des Mille Martyrs loop from Saint-Geoire-en-Valdaine, which covers about 15 km. Another option is the more challenging Thousand Martyrs Pass – Col des Mille Martyrs loop from Saint-Geoire-en-Valdaine, spanning nearly 38 km.
While Merlas offers a range of routes, including some easier options, the region's diverse topography with elevations up to 925 meters means many routes involve climbs. For family-friendly cycling, look for routes specifically marked as 'easy' in the guide, which tend to have less elevation gain and shorter distances. Always check the route details for suitability before heading out.
The Auvergne-Rhône-Alpes region, where Merlas is located, generally offers pleasant cycling conditions from spring through autumn. Summer provides warm weather, but spring and early autumn often have milder temperatures and beautiful scenery, making them ideal for touring cycling. Always check the local weather forecast before your ride, especially for mountainous areas.
Merlas and its surrounding communes offer various amenities for visitors. While specific cafes or accommodations directly on every route aren't listed, you'll find options in the villages and towns throughout the region. It's advisable to plan your route and check for services in nearby towns like Saint-Bueil, Le Verney, or Miribel-les-Échelles.
While specific bike rental shops in Merlas itself are not detailed, as a popular outdoor destination in the Isère department, it's likely that bike rental services are available in larger nearby towns or through specialized outdoor activity providers in the wider Auvergne-Rhône-Alpes region. It's recommended to search for 'location de vélos' in the surrounding area prior to your visit.
For cyclists arriving by car, parking is typically available in the villages and towns that serve as starting points for many routes. For instance, you might find parking in Saint-Bueil, Le Verney, or Miribel-les-Échelles, which are common departure points for touring cycling tours in the Merlas area. Always look for designated parking areas.
Merlas is a commune in the Isère department, and while public transport options might connect larger towns in the region, direct access to specific trailheads via public transport can be limited. It's best to research local bus services or regional trains that serve the main towns around Merlas and then plan your cycling route from there.
The Chartreuse Regional Natural Park is a protected area. Generally, touring cycling is permitted on marked trails and roads. However, it's always good practice to respect local regulations, stay on designated paths, and be mindful of wildlife and other park users. No specific permits for general cycling are usually required, but always check the park's official website for the latest guidelines.


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