Located between Saint-Ismier and Le Versoud, the Bois Français leisure park is the region's largest peri-urban natural site. Depending on the season, the site offers a multitude of activities (water sports, swimming, walking, etc.).
Open from mid-May to early September for catering and supervised swimming. Free access all year round for other activities. Altitude 230 m, depth 2 to 15 m (bathing pool 3 m maximum), total area: 100 ha.
Paying activities: supervised swimming and beach facilities, canoeing, water-skiing, snack bar, fast food. Free access all year round: picnic areas, mountain bike and hiking trails.
Pets allowed except in the swimming area.
Fires, motorized activities and swimming prohibited outside the supervised water area.
All types of watercraft are prohibited on the Vercors and Chartreuse lakes, except those entitled to use them.
Summer 2026: program of free events
Hip-hop dance, yoga, biodiversity awareness... Here's the program of free events for Summer 2026 at Bois Français. No need to book, just turn up at the times indicated at the snack bar/rescue station at the bathing base.
JUNE
Friday June 26 / 5pm-7pm: introduction to fishing on Lac Taillefer
JULY
Every Monday / 5.30pm-6.30pm: pilates classes offered by Pila'Fit
Every Tuesday / 4pm-6pm: hip-hop initiation offered by the Pompoko association
Every Thursday / 1pm-4pm: wooden games and group games offered by the Amuz'Toi association
Every Friday / 10.30am-11.30am: yoga class offered by Pila'Fit
Friday, July 24 / 5pm-7pm: introduction to paddleboarding on Lac Taillefer, organized by Nautic Sports
AUGUST
Every Monday / 5.30-6.30pm: yoga classes offered by the Gecko Yoga association
Every Tuesday / 1pm-4pm: Wooden games and group games offered by the Amuz'Toi association.
Every Thursday / 2pm-3.30pm and 3.30pm-5pm: archery offered by the Nautic Sports association
Every Friday / 10.30am-11.30am: pilates classes offered by the Gecko Yoga association
Friday August 28 / From 9:30pm: open-air cinema (screening of the film "En Fanfare" by Emmanuel Courco) proposed by Les cinémas associés.
All activities are free of charge and do not require registration, provided you have paid the entry fee for the swimming area.
In the event of rain, activities are cancelled.
For people with reduced mobility: loan of an amphibian wheelchair.
Bois Français Leisure Centre
38330 SAINT-ISMIERAdult: 3.50 €
Child: 2.50 €.
From 23/05 to 30/08/2026 daily between 10 am and 8 pm.
From 05/09 to 06/09/2026 between 10 am and 6 pm.
From 12/09 to 13/09/2026 between 10 am and 6 pm.
BY BUS (line 15) (summer only) accessible to people with reduced mobility
Fares and timetables at www.tag.fr
BY BIKE
Right bank cycle path via Gières/St-Martin-d'Hères university campus
Left bank cycle path via La Tronche/Meylan.
BY CAR
A41 freeway, Domène/Montbonnot exit, then follow signs for Le Versoud
Free parking
Access to site closed in case of parking saturation