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Running Trails
France
Auvergne Rhône Alpes
Grenoble

Lac Mort

The best running trails around Lac Mort

4.5

(59)

4,018

runners

214

runs

Jogging routes around Lac Mort are situated in the Auvergne-Rhône-Alpes region, at the foot of the Taillefer massif, approximately 25 km southeast of Grenoble. This glacial lake, elevated by a dam, offers a blend of serene landscapes and varied terrain. The area features alpine scenery and a mix of paved surfaces and accessible paths, providing diverse options for runners. The surrounding Matheysin plateau contributes to a preserved environment suitable for outdoor activities.

Best jogging routes around Lac Mort

  • The most…

Last updated: July 1, 2026

267

runners

#1.

Ut4M 20 Taillefer

22.4km

04:32

1,740m

1,270m

Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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Hard

Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

Hard
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Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Hard run. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

Hard

Hard run. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

Hard
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Popular around Lac Mort

Cycling around Lac Mort

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Tips from the Community

Darphin
August 10, 2025, Lac de Laffrey

The little road that goes down from Cholonge is great, on arrival you have a superb view of the lake

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A high-altitude lake, very quiet and rarely visited. The lake is at an altitude of 2,115 m. It offers breathtaking 360° views.

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Very beautiful panorama once you arrive at the Pierre Percée!

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I did it on gravel, climbing via the Aveillans hill (west), it was fine. Direct descent to Putteville, very limited at the beginning on gravel, much steeper but it was fine.

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Carole
November 4, 2024, La Pierre Percée

1st part very smooth and very pleasant, 2nd part much more technical with a nice climb on a very greasy muddy path, steep slopes and quite technical descents. The final does not take the greenway recently set up and which allows you to avoid the road.

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ericE
October 6, 2024, La Pierre Percée

beautiful course, technical, D+ beautiful singles

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Vette
August 10, 2024, La Pierre Percée

Very nice walk. Beautiful site.

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superb view and restaurant

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Frequently Asked Questions

How many running routes are available around Lac Mort?

There are over 200 running routes documented around Lac Mort, offering a wide variety of options for all skill levels. This includes 12 easy routes, 44 moderate routes, and 150 difficult routes for more experienced runners.

What do other runners enjoy most about the trails in Lac Mort?

The running trails around Lac Mort are highly rated by the komoot community, with an average score of 4.3 stars from over 50 reviews. Runners frequently praise the stunning alpine scenery, the serene glacial lakes, and the diverse terrain that caters to different abilities. More than 4,000 runners have used komoot to explore this beautiful region.

Are there easy or beginner-friendly running routes around Lac Mort?

Yes, Lac Mort offers several easy running routes suitable for beginners or those looking for a relaxed jog. For example, a popular choice is the 4 km loop around Lac Mort itself, which features a manageable 164 meters of elevation gain and is categorized as easy. You can find 12 easy routes in total.

What kind of terrain can I expect on the running trails around Lac Mort?

The terrain around Lac Mort is quite varied. You'll find a mix of paved surfaces and more accessible paths, especially around the lakes. However, as the area is at the foot of the Taillefer massif, some routes venture into more challenging alpine scenery with significant elevation changes. The broader Matheysin plateau also contributes to a diverse landscape.

Are there circular running routes available?

Yes, many of the running routes around Lac Mort are circular, allowing you to start and finish at the same point. A popular moderate circular route is the Lac Mort – Grand Lake of Laffrey loop from Laffrey, which covers 6.9 km. Another option is the Grand Lake of Laffrey – Grand Lake of Laffrey loop from Laffrey, a 8.2 km moderate path.

What is the best time of year for running around Lac Mort?

The warmer months, particularly summer, are ideal for running around Lac Mort, offering refreshing conditions and a pleasant environment. While the Matheysin plateau experiences distinct seasons, with potentially abundant snow in winter, many trails remain accessible. Always check local conditions, especially during colder months.

Can I bring my dog on the running trails?

While the region is generally welcoming to outdoor enthusiasts, specific regulations regarding dogs on trails can vary. It's always best to keep your dog on a leash and ensure they are well-behaved to respect the preserved natural environment and other visitors. There are no explicit restrictions mentioned for dog-friendly trails in the immediate Lac Mort area, but always practice responsible pet ownership.

Are there any challenging running routes for experienced athletes?

Absolutely. For experienced runners seeking a challenge, Lac Mort offers 150 difficult routes. A notable example is the Ut4M 20 Taillefer, a demanding 22.4 km trail leading through the Taillefer massif, often completed in about 4 hours 32 minutes with significant elevation changes.

Are there any family-friendly running options near Lac Mort?

Yes, the easier, shorter loops around Lac Mort and the Grand Lake of Laffrey are generally suitable for families. These paths often feature minimal elevation gain and a mix of paved and accessible surfaces, making them enjoyable for various ages and fitness levels. The serene environment provides a pleasant outing for everyone.

Where can I find parking for the running trails?

While specific parking locations are not detailed, the area around Lac Mort and the nearby village of Laffrey are popular starting points for outdoor activities. It is generally possible to find parking in designated areas near the lake access points or in Laffrey. Always look for official parking signs and respect local regulations.

Is Lac Mort accessible by public transport?

Lac Mort is situated approximately 25 km southeast of Grenoble. While direct public transport options to the immediate lakeside might be limited, you can typically reach the general area via bus services from Grenoble to Laffrey. From Laffrey, you might need to walk or arrange local transport to reach specific trailheads. It's advisable to check current bus schedules and routes with local transport providers.

Are there places to eat or stay near the running trails?

The village of Laffrey, located near Lac Mort, offers amenities such as cafes, restaurants, and accommodation options. These can be convenient for runners looking to refuel or stay overnight. The broader Matheysin plateau also provides various services for visitors.

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