Some 430 miles of marked trails, more than 60 high-altitude lakes and over 40 glaciers — and yet Écrins National Park remains one of the French Alps' least crowded corners. Covering 227,000 acres south of Grenoble, it's France's second-largest national park, topped out by the Barre des Écrins at nearly 13,500 feet.
The hiking splits neatly by ability. Experienced mountaineers gravitate to the Col de l'Aup Martin, a 12-mile route and the park's highest trail, which crosses snowfields and steep rocky ground. Families and casual walkers do better on the Bans Refuge hike, a gentler climb through larch forest to a seasonal mountain shelter, with panoramas over the glacial valley and the Aiglière summit at the turn-around point.
The lakes are the park's real signature. Lake Lauvitel, the largest at 4,429 feet, was formed when a rockfall dammed a valley; a tough four-mile loop trail reaches it past waterfalls and forest. Lake Lauzon, carved by a glacier roughly 10,000 years ago, is known for its biodiversity and pairs with Blue Lake on the park's most popular — but demanding — loop. Then there's Lac de l'Eychauda, famous for floating icebergs that survive even into mid-August thanks to the cold shadow of its valley. One caveat: the water stays dangerously cold, and while swimming isn't technically banned, officials strongly discourage it to protect both visitors and fragile lake ecosystems. Anglers can fish once the lakes thaw in April or May, but only with the correct licence.
Access to the park runs through a string of characterful villages. Saint-Christophe-en-Oisans has a Mountaineering Memories Museum, and its hamlet of La Bérarde marks where the road ends and the trails begin. Ailefroide, France's second-biggest mountaineering community, is a natural base for summit attempts, with climbing sites, hotels and chalets. In summer, Vallouise-Pelvoux opens as the best jumping-off point for the Glacier Blanc and Glacier Noir, with mountain huts where climbers swap stories over dinner.
Practicalities: you'll want a car. Grenoble Alpes Isère Airport is just over an hour north, Marseille Provence about two hours south — though exact drive times depend on which corner of this very large park you're aiming for. Camping is allowed only in designated areas under permit, a rule dating back to the site's protection in 1913. Summer is the season for most access points, since several villages and huts close outside it.
For hikers tired of sharing Alpine trails with crowds, Écrins offers big-mountain scenery, glacial lakes and genuine mountain culture without the Chamonix-level traffic. Just match your route to your experience level — this park rewards preparation.
