Courmayeur, Alps, Italy · Friday, August 27, 2027

100K

CCC - Courmayeur-Champex-Chamonix

293 days away
101 km Distance
6,100 m Climbing
10.0 Grit · Elite / extreme
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45.7969° N, 6.9690° E© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 60 m / km Mountain. Significant climbing. Steep sections will require power hiking.
Time limit 26 hours 15:27 min/km average. Generous. Walkable throughout for most of the field. Among the most forgiving 100K cut-offs we track. Measured against 233 races of the same distance. Cut-off calculator →
Field size ~1,516 Very large. Congested start, busy aid stations.

DUV results for the 2026 edition (101km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, August

Daytime high 18°C
Night low 8°C
Rainfall Showers likely
Daylight 13 h 36 m of light

Regional 2001-2020 average for August — NASA POWER, grid elevation 1714 m. Not a forecast.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a mountain course. Poles are highly recommended for the sustained climbs.

By UltraHub Expert
👟 gear

With mountain terrain, choose a shoe with aggressive lugs (5mm+) for optimal performance.

By UltraHub Expert
🥤 nutrition

For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

By UltraHub Expert

Gear for this race

Chosen for 101 km of mountain with 6,100 m of ascent.

  • Trail Running Shoes60 m of climb per kilometre — grip and rock protection before cushioning.
  • Race NutritionPast 101 km the palate quits before the legs do — carry more than one flavour.
  • Hydration VestsPole attachment and chest-strap stability on steep ground.
  • Trekking Poles6,100 m of ascent to walk up.
  • HeadlampsA 26 h limit puts you out there after dark.

HOKA

Speedgoat 6

Max-cushion trail shoe with Vibram Megagrip outsole, ideal for rocky mountain terrain.

$155 ★★★★★ 4.7

inov-8

TrailFly Ultra G 300 Max

Graphene-enhanced grip with max cushion for ultra distance trail running.

$180 ★★★★★ 4.5

Tailwind

Endurance Fuel

All-in-one calorie and electrolyte drink mix. 200 calories per serving.

$25 ★★★★★ 4.8

Nathan

VaporKrar 12L

12L race vest co-designed with ultra champion Rob Krar, with insulated bladder pocket.

$170 ★★★★★ 4.6

Black Diamond

Distance FLZ

Lightweight folding trekking poles with FlickLock Z adjustment. 340g per pole.

$170 ★★★★★ 4.7

Nitecore

UT32

Dual-beam trail running headlamp (1100 lumens) with spot and flood beams.

$100 ★★★★★ 4.5
All gear guides →

About

A 101km alpine race through Italy, Switzerland, and France, part of the UTMB event series.

Highlights

  • Part of UTMB series
  • 6,100m elevation
  • 3-country route

Course Notes

Course de pleine nature empruntant en grande partie le sentier international de Grande Randonnée du Tour du Mont-Blanc. Épreuve comportant de nombreux passages en altitude (>2500m), dans des conditions climatiques pouvant être très difficiles.

Similar races

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