For race directors

Claim your course

Check what runners plan against: your aid stations, cutoffs and start time. Fix anything that's off. Kris reviews every claim by hand, then your course shows "Verified by the race".

Your race

Arc of Attrition by UTMB 100 Mile — 2027

106.6 mi · 18,081 ft gain · Jan 22, 2027

See the course page · Not your race?

What should we do? Claim and correctCheck the details below and fix anything that's off.Remove this course from TrailGoatTell us why in the notes. Kris takes it down by hand.

Aid stations

This is what runners see today. Distances are in miles from the start. Cutoffs are hours and minutes after the start, like 13:30. Leave a cutoff blank if there isn't one.

Start and finish

Race start, date and time Finish cutoff (h:mm after the start)

Newer GPX file (link, optional)

Notes for Kris

About you

Your name Email Your role at the race Race website (optional)

I direct or work for this race

Claim your course

Find your race

Arc of Attrition by UTMB 100 Mile — 2027

Aid stations

Start and finish

About you

Got it.