Mont-Blanc Marathon
Trail Running covering 3.8 km to 92 km with up to 6,330 m D+ in Chamonix-Mont-Blanc (Auvergne-Rhône-Alpes, France)
Mont-Blanc Marathon is an endurance sporting event in Chamonix-Mont-Blanc, Auvergne-Rhône-Alpes, FR focused on Trail Running. It is part of UTMB Index Races. Key features include High Altitude, Mountain, Nature & Off-Road, Forest.
The race program comprises 8 competitions, including 90km of Mont-Blanc (92 km, +6,330 m D+), 42km of Mont-Blanc (42 km, +2,540 m D+), 23km of Mont-Blanc (23 km, +1,680 m D+), Starry Duo (21 km, +1,450 m D+), Young Race Marathon U20 (18-19 years) (13 km, +1,200 m D+), and 10km of Mont-Blanc (10 km, +325 m D+) (8 competitions in total). The next edition is officially confirmed from June 24, 2027 to June 27, 2027. Official race regulations, course details, and registration information are provided on the organizer's website (marathonmontblanc.fr).
Event characteristics
Races & distances (8)
| Competition | Discipline | Distance | Elevation gain | Altitude range | Course type | Course & profile |
|---|---|---|---|---|---|---|
| 90km of Mont-Blanc | Trail Running | 92 km | +6,330 m | 1,003 m - 3,662 m | Loop course | Route & profile |
| 42km of Mont-Blanc | Trail Running | 42 km | +2,540 m | 1,006 m - 2,073 m | Loop course | Route & profile |
| 23km of Mont-Blanc | Trail Running | 23 km | +1,680 m | 1,009 m - 1,715 m | Loop course | Route & profile |
| Starry Duo | Trail Running | 21 km | +1,450 m | 1,012 m - 1,621 m | Loop course | Route & profile |
| Young Race Marathon U20 (18-19 years) | Trail Running | 13 km | +1,200 m | 1,015 m - 1,519 m | Loop course | Route & profile |
| 10km of Mont-Blanc | Trail Running | 10 km | +325 m | 1,003 m - 1,139 m | Loop course | Route & profile |
| Young Race Marathon U18 (16-17 years) | Trail Running | 7 km | +644 m | 1,006 m - 1,276 m | Loop course | Route & profile |
| Vertical KM | Trail Running | 3.8 km | +1,000 m | 1,009 m - 1,429 m | Loop course | Route & profile |
Course route & map
Elevation profile & course telemetry
Altitude from 1,003 m to 3,662 m above sea level (+6,330 m D+, -6,330 m D-)
Elevation profile & course telemetry
Altitude from 1,006 m to 2,073 m above sea level (+2,540 m D+, -2,540 m D-)
Elevation profile & course telemetry
Altitude from 1,009 m to 1,715 m above sea level (+1,680 m D+, -1,680 m D-)
Elevation profile & course telemetry
Altitude from 1,012 m to 1,621 m above sea level (+1,450 m D+, -1,450 m D-)
Elevation profile & course telemetry
Altitude from 1,015 m to 1,519 m above sea level (+1,200 m D+, -1,200 m D-)
Elevation profile & course telemetry
Altitude from 1,003 m to 1,139 m above sea level (+325 m D+, -325 m D-)
Elevation profile & course telemetry
Altitude from 1,006 m to 1,276 m above sea level (+644 m D+, -644 m D-)
Elevation profile & course telemetry
Altitude from 1,009 m to 1,429 m above sea level (+1,000 m D+, -1,000 m D-)
Frequently asked questions (FAQ)
When and where does Mont-Blanc Marathon take place?
Mont-Blanc Marathon takes place in Chamonix-Mont-Blanc, Auvergne-Rhône-Alpes, FR (start area at coordinates 45.9237° N, 6.8694° E). The next edition is officially confirmed from June 24, 2027 to June 27, 2027.
What races and distances are offered at Mont-Blanc Marathon?
The race program comprises 8 competitions, including 90km of Mont-Blanc (92 km, +6,330 m D+), 42km of Mont-Blanc (42 km, +2,540 m D+), 23km of Mont-Blanc (23 km, +1,680 m D+), Starry Duo (21 km, +1,450 m D+), Young Race Marathon U20 (18-19 years) (13 km, +1,200 m D+), and 10km of Mont-Blanc (10 km, +325 m D+) (8 competitions in total). The competitions belong to Trail Running.
What is the course layout and elevation profile for Mont-Blanc Marathon?
The main competition (90km of Mont-Blanc over 92 km) is designed as a loop course featuring +6,330 m of elevation gain and -6,330 m of elevation loss, ranging between 1,003 m and 3,662 m above sea level. An interactive course map with route visualization, elevation profile, and GPX export is available in the course section on this page.
Where can I find registration and official race rules for Mont-Blanc Marathon?
Official race regulations, course details, and registration information are provided on the organizer's website (marathonmontblanc.fr).