Photo: Tiia Monto / Wikimedia Commons (CC BY-SA 3.0) / Source (opens in a new tab)Chamonix-Mont-Blanc
UTMB Mont-Blanc
Monday, 23 August 2027
UTMB 174km
174km D+ 10000m
TDS 145km
145km D+ 9100m
CCC 100km
100km D+ 6100m
OCC 57km
57km D+ 3500m
Race data
Terrain
Ultra Trail
Difficulty
Elite
Distance
4 modalities
UTMB 174km
- Distance
- 174 km
- Elevation Gain
- D+ 10000m
- Max Time
- -
TDS 145km
- Distance
- 145 km
- Elevation Gain
- D+ 9100m
- Max Time
- -
CCC 100km
- Distance
- 100 km
- Elevation Gain
- D+ 6100m
- Max Time
- -
OCC 57km
- Distance
- 57 km
- Elevation Gain
- D+ 3500m
- Max Time
- -
| Modality | Distance | Elevation Gain | Max Time | Price |
|---|---|---|---|---|
| UTMB 174km | 174 km | D+ 10000m | - | - |
| TDS 145km | 145 km | D+ 9100m | - | - |
| CCC 100km | 100 km | D+ 6100m | - | - |
| OCC 57km | 57 km | D+ 3500m | - | - |
Will your watch battery last the ~48 h of UTMB Mont-Blanc?Worked out for the longest course (174 km). See which watches reach the finish with GPS on and which die on the way.Check my watch Check my watchYour checklist for UTMB Mont-Blanc
What you need, category by category, with our #1 pick for this race. Tick what you already have.
0 of 7 ready
GPS watch
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)Garmin Instinct 3 Solar 50 mm
Solar charging: near-unlimited battery in daily use
Downside: No onboard topo maps
Gear
Shoes with aggressive lugs for rock and mud
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)
Hoka Speedgoat 7
Max Hoka cushioning: protects your legs over long distances
Downside: High stack: less stable for those who want more ground feel
Nutrition
A gel every 40-45 minutes from the start
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)
Maurten Gel 100
Tecnología de hidrogel: excelente tolerancia gástrica
Downside: Precio elevado respecto a otros geles
Sun Protection
Sweat-resistant SPF50, reapply every 2-3 hours
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)
ISDIN Fotoprotector Fusion Water SPF 50+
Ultralight texture, feels invisible on skin
Downside: Small format (50 ml), may run short on ultras
Body Care
Anti-chafe on feet, armpits and groin
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)
BodyGlide Original Anti-Chafe Balm
Easy-to-apply stick format, even with sweaty hands
Downside: Higher price than traditional petroleum jelly
Accommodation
Book as soon as you have a bib: availability goes fast
Done, you already have it
View on B-Hotel →(se abre en una pestaña nueva)
B-Hotel Barcelona
Car Rental
Pick up the car at Geneva (GVA)
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)
DRIVALIA Alquiler de vehículos por Suscripción CarCloud Country Plus
Trip logistics
Registration, travel and insurance: what you should have sorted before race day.
Affiliate links: if you buy, we earn a commission at no extra cost to you.
Gear up for UTMB Mont-Blanc
Buying guides with the best value for money, picked for this kind of terrain.
Swipe to see all 4 comparisons
Historical weather
What to wear at 15 °C: guide and kit →
Typical weather for the race date (10-year average)
Temperature
13°C – 23°C
Average 18°C
Rain
23%
0.9 mm avg
Wind
7 km/h
max. average
Sunshine hours
12h
daily average
Gear recommendations
Sun protection essential (12h sunshine, up to 23°C)
Forecast for 23 August
Weather forecast from Open-Meteo (may change until race day)
UTMB: the world final of trail running
Every August, Chamonix becomes the capital of trail running. UTMB circles Mont Blanc over 174 km through France, Italy and Switzerland, with 10,000 m of climbing and a cut-off of over 40 hours.
Getting to the start line
Places are earned with Running Stones from UTMB World Series races, then drawn by lottery.
Mandatory gear
Gear is checked: waterproof jacket with taped seams, two headlamps, thermal layer, survival blanket and water reserve. Test it all beforehand.
Check our gear guides and other races in France.
360Complete Pack
UTMB Mont-Blanc registration
RegistrationLimited places and strong international demand. Register on the official website as soon as it opens.
Tips
- •Check the official website for the registration opening date
- •France requires a medical certificate or PPS if you don't hold an FFA licence
- •Review the mandatory gear list before travelling
Where to stay for UTMB Mont-Blanc
AccommodationChamonix-Mont-Blanc fills up on race weekend. Book months ahead and stay close to the start.
Tips
- •Book as soon as you have a bib: availability goes fast
- •Nearby villages are cheaper if you have a car
- •Earplugs and eye mask for sleep before an early start
Gear for UTMB Mont-Blanc
GearAlpine terrain with big climbs: grippy shoes, poles, hydration vest, waterproof jacket and a headlamp if you run at night.
Tips
- •Shoes with aggressive lugs for rock and mud
- •Poles save your legs on long climbs
- •Waterproof jacket with taped seams (usually mandatory)
- •Headlamp with a spare battery for the long distances
Which shoes for UTMB Mont-Blanc?
Which footwear fits based on the race's terrain and weather
Which GPS watch for UTMB Mont-Blanc?
Which watch has the battery to last based on your estimated finish time
Best Trail Running Poles 2026: Comparison and Buying Guide
Best trail running poles 2026: Black Diamond, Leki and Komperdell compared. Carbon vs aluminium, folding length, technique and how to pick your size.
Best Trail Running Hydration Vests 2026: Comparison and Buying Guide
Best trail running hydration vests 2026: 12 vests and packs compared. How many litres you need by distance, soft flasks vs reservoir, and fit.
Strength Training Gear for Trail Running at Home 2026: Comparison and Buying Guide
Comparison of the best strength training gear for trail runners at home: dumbbells, resistance bands, kettlebell, TRX, weight bench and foam roller, with a 3-day-a-week routine.
Nutrition for UTMB Mont-Blanc
NutritionMany hours of mountain effort: plan gels, salts and solid food from the first kilometre.
Tips
- •A gel every 40-45 minutes from the start
- •Electrolytes if it's hot or you sweat a lot
- •Alternate sweet and savoury on ultra distances
Best salt tablets and sodium capsules for running 2026
A comparison of the 7 best salt tablets and sodium capsules for running and trail 2026: 226ERS Sub9 Salts, Crown Pro Salt Caps, Victory Endurance, Precision Hydration PH 1500 and more. How many salt tablets to take per hour, how to calculate your sweat rate and which format to choose.
Getting to UTMB Mont-Blanc
TransportThe most practical airport is Geneva (GVA). From there, train, bus or car to Chamonix-Mont-Blanc.
Tips
- •Fly to Geneva (GVA) early: prices rise close to the date
- •Check the organisers' official shuttles
- •Driving is a good option if travelling as a group
Car rental for UTMB Mont-Blanc
Car RentalA car gives you freedom between start, finish and accommodation, and lets you recce the course.
Tips
- •Pick up the car at Geneva (GVA)
- •Mountain roads: drive carefully after the race
Insurance for UTMB Mont-Blanc
InsuranceMountain race abroad: a rescue can cost thousands of euros. Travel with sports cover.
Tips
- •European Health Insurance Card at minimum
- •Insurance with mountain rescue and evacuation
- •Cancellation cover for injury
Body care for UTMB Mont-Blanc
Body CareClimbing and long hours punish feet and skin. Prevent blisters and chafing before the start.
Tips
- •Anti-chafe on feet, armpits and groin
- •Blister plasters in your pack
- •Compression socks for recovery
Sun protection for UTMB Mont-Blanc
Sun ProtectionUV radiation is much stronger at altitude. Sweat-resistant SPF50 and lip protection.
Tips
- •Sweat-resistant SPF50, reapply every 2-3 hours
- •Lip balm with SPF
- •Category 3 sunglasses
Best Sunscreen for Runners 2026: 7 Sweat-Proof SPF 50 Picks
Which sunscreen survives a sweaty long run? We tested 7 SPF 50 sweat-proof picks — creams, sticks and a lip balm — against heat, altitude UV and hours of sweat. See the winner.
Frequently Asked Questions
- When is UTMB 2027?
- HOKA UTMB Mont-Blanc week 2027 runs 23-29 August in Chamonix. The UTMB (174 km) starts on Friday.
- How do I get a UTMB place?
- You need Running Stones, earned by running UTMB World Series races. Places are drawn by lottery; more stones means better odds.
- What distances does UTMB offer?
- UTMB 174 km (10,000 m D+), TDS 145 km, CCC 100 km, OCC 57 km and other shorter races during the week.
Races similar to UTMB Mont-Blanc
View all similar races →Swipe to see all 3 races
FeaturedPhoto: Anthospace / Wikimedia Commons (CC BY-SA 4.0)19 Aug 2026Race finishedGrand Raid des Pyrénées
Vielle-Aure
El gran ultra del Pirineo francés: 160, 120, 80 y 40 km desde Vielle-Aure, a pocas horas de la frontera española. Agosto.
160kmD+ 10000mEliteView Pack 360
FeaturedPhoto: Cayambe / Wikimedia Commons (CC BY-SA 3.0)24 Sept 2026Race finishedNice Côte d'Azur by UTMB
Niza
De los Alpes al mar: 23 a 168 km con meta en Niza. Finales de septiembre.
168kmD+ 9000mAdvancedView Pack 360
FeaturedPhoto: Cecuber / Wikimedia Commons (CC BY-SA 3.0)15 Oct 2026Grand Raid de La Réunion
Saint-Pierre
La Diagonale des Fous: 180 km y 10.200 m D+ cruzando La Reunión. 15-18 de octubre de 2026.
180kmD+ 10200mEliteView Pack 360
Do you organize a trail race?
Add it to TrailRunTemple for free. We build its page with the full Pack 360 (registration, accommodation, gear, nutrition and more) so runners find it and show up prepared.
Add my race for free