Race has not yet run as of 21 August 2026; scheduled to start Friday 2026-08-28 09:00 in Courmayeur. Bib pickup slot reservations closed August 10; registration for 2026 is closed.
Free, and always will be. NavRun makes money from race-day planning for runners who want it, never from this.
Ultras change constantly, sometimes the morning of. Always confirm with the race director and the official website before you rely on anything here.
Point-to-point from Courmayeur, Italy (09:00 start) to Chamonix, France, climbing to ~2,556 m near the Grand Col Ferret, crossing into Switzerland (La Fouly, Champex-Lac, Trient) before re-entering France at Vallorcine for the final climb to La Flegere and the descent into Chamonix.
The race
What this one is
A ~101 km (100.9 km measured) point-to-point trail race from Courmayeur, Italy to Chamonix, France, crossing Switzerland via the Grand Col Ferret, La Fouly, Champex-Lac and Trient. Known as the '100K Final' of the UTMB World Series and historically the 'little sister' of the UTMB 171 km race, sharing its finish line and week but starting a day later, from a different town, on a shorter route.
Getting in
Getting in
Entry, lottery and what the race asks of you before race day.
A valid UTMB Index in the 50K, 100K or 100M category, plus Running Stones earned in prior UTMB World Series races within the past 24 months (UTMB, CCC or OCC), or direct entry via a UTMB World Series race win. The exact number of Running Stones required for the 2026 CCC lottery was not found in this pass.
montblanc.utmb.world
"Personal assistance" (not a running pacer) is permitted for CCC at exactly two intermediate points: Champex and Vallorcine. One assistant at a time, in an area reserved for this purpose, admitted by a numbered ticket (1 ticket = 1 person = 1 station, tickets issued in the bib envelope). The assistant may carry the runner ONE bag of at most 30 litres. Medical/paramedical assistance from this person is strictly forbidden (small comfort care such as a blister or massage is tolerated only with the runner seated, not lying down). Animals are not allowed in the assistance areas. No assistance at any other CCC checkpoint.
montblanc.utmb.world
Pacer rules
UTMB Mont-Blanc races, including CCC, do not have a pacer system. The word does not appear anywhere in the 28-item Race Regulations, the Q&A, or the aid-stations pages. The only on-course companion mechanism is stationary "personal assistance" at two fixed CCC checkpoints (Champex, Vallorcine).
montblanc.utmb.world
Drop bag rules
One 30-litre drop bag is issued at bib pickup. It must be dropped off at the designated collection point in Courmayeur before the start. The runner's bag is then returned to them at Champex-Lac, and again (final retrieval) in Chamonix. No poles, valuables or fragile items permitted in the bag. Retrieval logistics may be delayed for runners who withdraw early.
montblanc.utmb.world
Cutoff philosophy
Published as "MAX ALLOWED RACE TIME: 26 HOURS 30 MINUTES" from the official 09:00 start. The regulations clarify that intermediate and finish cutoffs are actually calculated from the LAST start wave's departure time (CCC 3, 09:30), so every runner -- regardless of their own wave -- must clear the same fixed clock times; a runner in an earlier wave effectively receives extra time (up to 27:00 for a 09:00 starter reaching the Saturday 12:00 PM finish cutoff). A runner must leave a checkpoint before its cutoff to continue, whatever their arrival time.
montblanc.utmb.world
Aid stations
Every stop, and what you get there
● yes ○ no ? nobody has checked – does not apply to this race
Mile
Station
Cutoff
Crew access
Bag
Pacer
Med
To next
0.00
Courmayeur
4,006 ft
9:00am
●
●
?
?
8.45
8.45
Refuge Bertone
6,503 ft
1:45pm
○
○
?
?
7.89
16.34
Arnouvaz
5,830 ft
4:30pm
○
○
?
?
8.95
25.29
La Fouly
5,262 ft
8:15pm
○
○
?
?
8.82
34.11
Champex-Lac
4,829 ft
11:15pm
●
●
?
?
3.05
37.16
Plan de l'Au
4,396 ft
12:15am
○
○
?
?
7.27
44.43
Trient
4,278 ft
4:00am
○
○
?
?
6.83
51.26
Vallorcine
4,134 ft
7:15am
●
○
?
?
6.96
58.22
La Flegere
6,175 ft
10:45am
○
○
?
?
4.48
62.70
Chamonix
3,396 ft
12:00pm
●
●
?
?
?
What it looks like out there
Somebody has been out there with a camera
the tables say the climb is long. these say what long feels like.
17 people have been out there with a camera or a microphone.
These are other people's work and we link straight to them. Watching costs nothing and needs no account.
More of them: every race we hold, on film.
Add to this page
What you know
every one of these is read by a person before it changes anything
Ran this race? Tell the next runner what you know.
Nobody sees it until we have read it. No account, no sign-in.
See something wrong or out of date? Suggest an edit.
This changes nothing on the page on its own. Somebody checks it against the race first.
Seen a course preview or a film of this one? Send it over.
Somebody watches it before it goes anywhere near this page. What we are after is footage of this course, on the ground. If it would be just as true of any other race, it is not this.
Have the GPX? Send us the link.
We want the address of the file the race publishes, not the file. We download it from there so the page can say where the line came from.
Are you the race director? Get in touch and we'll make it right.
We read every one of these and we write back. Every fact here carries the source it came from, and the way a wrong one gets fixed is a person checking it against what you tell us.
Where this came from.
Every fact on this page records its source and when we last checked it: 223 sources for this race. Hover a source link to read the sentence it came from.
60% of what we track for a course is filled in. The rest says "not checked yet" rather than guessing.
Ultras change. We will tell you when this one does.
Cutoffs move, races get postponed, lotteries open and close. We read the race's own sources and record where every fact came from. Put your email in and we will send you what changed, and where we read it.
No account, and nothing to cancel.
What happens to your email. Nothing else. I do not sell it, and I will not send you anything except this race changing. One click gets you out.
I keep this catalog because the information is scattered and hard to trust. Telling you when it moves is the same job.