Friday and Saturday (Sept. 1-2) will be ultrarunning-filled for endurance fans as more than 2,300 participants take on the Ultra-Trail du Mont Blanc.

The race begins at 6:30 p.m. local time (12:30 p.m. EDT) on Sept. 1 from Chamonix, France. The one-loop course returns to the French town and finishes at the site of the 1924 Winter Olympics with top-level runners typically taking 22-23 hours (men) and 25-27 hours (women).

Here’s how to follow along.

Live stream

Useful links

UTMB homepage
Live tracking
Entrants
UTMB on Twitter
iRunFar on Twitter
#UTMB on Twitter

Course map (red line is UTMB)

Ultra-Trail du Mont Blanc
Photo: UTMB.

Recommended watch

Canadian Running‘s coverage of the 2017 UTMB

Alissa St Laurent hopes second time’s a charm at the 2017 UTMB
How to qualify for UTMB racing in Canada
Cancer-beating Canadian takes on world’s most famous, and daunting, ultra
Top Quebec ultrarunner’s big-time mileage ahead of toughest race of his life
Interactive course map and elevation profile feature

Ultra-Trail du Mont-Blanc