✦ Trails & Ultra-Trails · Race Plans

Your next race.
Your plan segment by segment.

Segly has pre-computed a strategy for every race format. Customize it to your level and start with a plan built around the official aid stations.

Analyze my race → ✓ 4 legendary races already split at the official aid stations
Available races
🏔 Grand Raid des Pyrénées ⛰️ Challenge du Montcalm ⛰ Échappée Belle 🌍 UTMB Mont-Blanc
GRP · Ultra Tour 160 — Race plan
KM 0 → 18 Vielle-Aure → Aulon aid station
3h42
KM 18 → 34 Aulon → Pic du Midi
6h15
KM 34 → 52 Pic du Midi → Barèges
9h08
🌡 12°C · wind 24km/h 💧 Water + salts aid station
Aug 13 → 16, 2026 · Ariège · Pyrenees · 36th edition

Challenge
du Montcalm

Since 1990, a legendary race in the Ariège Pyrenees. 5 formats from a 15 km trail up to 109 km, sections above 3,000 m altitude, France-Andorra crossings. Nearly 700 passionate volunteers for a unique atmosphere.

Aug 13→16 2026 · Ariège
PicaPica 109
Thu. 13/08
109 km
Distance
11 500m
D+
~36h
Avg. time

The legendary Montcalm race. France-Andorra crossing, sections above 3,000 m altitude. A Pyrenean legend since 1990.

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15% fatigue factor by default · Customizable to your level
PicAriège 70
Fri. 14/08
70 km
Distance
~7 000m
D+
~18h
Avg. time

The little sister of the PicaPica. Same route over 70 km, same high-mountain Ariège spirit.

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15% fatigue factor by default · Customizable to your level
Marathon du Montcalm 40
Sat. 15/08
40 km
Distance
2 750m
D+
~9h
Avg. time

The roof of Ariège and Catalonia. A demanding challenge taking you to the massif's finest summits.

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15% fatigue factor by default · Customizable to your level
Trail des Mineurs 25
Sat. 15/08
25 km
Distance
~1 800m
D+
~5h
Avg. time

Discover the beautiful villages of the Ariège valley. An accessible format for a first big mountain distance.

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15% fatigue factor by default · Customizable to your level
Trail des Novis 15
Sun. 16/08
15 km
Distance
~900m
D+
~3h
Avg. time

The discovery format of the Montcalm. Accessible Pyrenean scenery and a guaranteed friendly atmosphere.

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15% fatigue factor by default · Customizable to your level
ℹ️
36th edition · Ariège · Since 1990
Nearly 700 passionate volunteers, a community of runners from around the world, and routes crossing France and Andorra above 3,000 m. One of the most iconic races in the Pyrenees.
Aug 19 → 23, 2026 · Pyrenees · Vielle-Aure

Grand Raid
des Pyrénées

19th edition of the GRP — 7 formats from 40 to 160 km in the Pyrenees. Technical terrain, high mountains, night sections. One of the most demanding raids in France.

Aug 19→23 2026
Ultra Tour 160
Wed. 19/08
160 km
Distance
10 000m
D+
~41h
Avg. time

The flagship GRP format. 15 aid stations, 2 life bases with support crew access. Pic du Midi de Bigorre at 2,877 m.

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15% fatigue factor by default · Customizable to your level
Tour des Cirques 120
Thu. 20/08
120 km
Distance
7 500m
D+
~28h
Avg. time

Cirques of Gavarnie and Estaubé. Start in Piau-Engaly. Very technical and committing.

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15% fatigue factor by default · Customizable to your level
Tour des Lacs 80
Fri. 21/08
80 km
Distance
5 000m
D+
~18h
Avg. time

High-altitude lakes and the Néouvielle massif. Accessible but demanding format.

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15% fatigue factor by default · Customizable to your level
Tour du Moudang 60
Sat. 22/08
60 km
Distance
3 500m
D+
~12h
Avg. time

Moudang valley. Long trail, ideal for a first big distance.

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15% fatigue factor by default · Customizable to your level
Tour du Bastan 50
Sat. 22/08
50 km
Distance
3 000m
D+
~9h
Avg. time

Technical mountain trail. Rocky paths and panoramic views.

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15% fatigue factor by default · Customizable to your level
Tour de la Gela 40
Sun. 23/08
40 km
Distance
3 400m
D+
~8h
Avg. time

Steep elevation over a short distance. Ideal for trail runners seeking intensity.

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15% fatigue factor by default · Customizable to your level
Tour du Néouvielle 40
Sun. 23/08
40 km
Distance
2 400m
D+
~7h
Avg. time

The most accessible GRP format. Néouvielle massif and its mountain lakes.

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15% fatigue factor by default · Customizable to your level
Aug 20 → 23, 2026 · Belledonne massif · French Alps

L'Échappée
Belle

14th edition — Full crossing of the Belledonne massif between Isère and Savoie. 5 formats from 21 to 152 km. Very technical alpine terrain, 15 passes above 2,000 m on the full crossing.

Aug 20→23 2026
L'Intégrale Belledonne
Thu. 20/08
152 km
Distance
11 400m
D+
~44h
Avg. time

Full crossing Vizille → Aiguebelle. 15 passes, 30 mountain lakes. Solo or pair. Belledonne's ultimate challenge.

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15% fatigue factor by default · Customizable to your level
Traversée Nord
Fri. 21/08
92 km
Distance
6 750m
D+
~24h
Avg. time

Fond-de-France → Aiguebelle. Wild, little-traveled trails of the northern Belledonne massif.

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15% fatigue factor by default · Customizable to your level
Parcours des Crêtes
Sat. 22/08
63 km
Distance
4 750m
D+
~16h
Avg. time

Allevard → Aiguebelle. Panoramic ridges and the Maurienne side. Very technical.

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15% fatigue factor by default · Customizable to your level
Maratrail
Sat. 22/08
42 km
Distance
2 800m
D+
~9h
Avg. time

Valgelon-La Rochette → Aiguebelle. All-Savoie trail route with views of Mont-Blanc.

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15% fatigue factor by default · Customizable to your level
Skyrace du Rocher Blanc
Sun. 23/08
21 km
Distance
2 000m
D+
~4h
Avg. time

Fond-de-France loop. Ascent of the Rocher Blanc at 2,928 m. Intense skyrunning format.

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15% fatigue factor by default · Customizable to your level
Aug 24 → 30, 2026 · Chamonix · France / Italy / Switzerland

UTMB
Mont-Blanc

23rd edition of UTMB week — the biggest trail event in the world. 8 formats from 15 to 300 km around the Mont-Blanc massif. Over 10,000 runners, 100+ nationalities.

Aug 24→30 2026 · Chamonix
⏳
Some GPX files still awaiting official release
Several UTMB analyses are already available below. GPX files for PTL®, OCC® and MCC have not yet been released by the organization — analyses will be published as soon as they are received.
UTMB® 100M
Fri. 28/08 · 17h45
174 km
Distance
9 900m
D+
~46h
Max time

The legendary race. Tour of Mont-Blanc across 3 countries. Start and finish in Chamonix. UTMB World Series 100M final.

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15% fatigue factor by default · Customizable to your level
PTL® — Petite Trotte à Léon
Mon. 24/08
300 km
Distance
25 000m
D+
~150h
Max time

The extreme self-sufficient event. 300 km, 25,000 m elevation gain. Teams of 2 or 3. No fixed route.

GPX coming soon
15% fatigue factor by default · Customizable to your level
TDS® — Traces des Ducs de Savoie
Mon. 24/08
148 km
Distance
9 500m
D+
~38h
Avg. time

Courmayeur → Chamonix via Beaufortain. Highly committing event, outside the World Series circuit.

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15% fatigue factor by default · Customizable to your level
CCC® — 100K Final
Fri. 28/08
101 km
Distance
6 050m
D+
~26h
Max time

Courmayeur → Champex → Chamonix. UTMB World Series 100K final. Friday morning start.

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15% fatigue factor by default · Customizable to your level
OCC® — 50K Final
Thu. 27/08
57 km
Distance
3 500m
D+
~13h
Avg. time

Orsières → Champex → Chamonix. UTMB World Series 50K final. Intense pace.

GPX coming soon
15% fatigue factor by default · Customizable to your level
MCC — Martigny-Combe-Chamonix
Wed. 26/08
40 km
Distance
2 300m
D+
~8h
Avg. time

Martigny-Combe → Chamonix. Accessible format to discover the UTMB atmosphere. 2026 lottery entry.

GPX coming soon
15% fatigue factor by default · Customizable to your level
ETC — 15K
Tue. 25/08
15 km
Distance
~1 200m
D+
~3h
Avg. time

Short and intense trail format around Chamonix. Technical course on the slopes of Mont-Blanc.

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15% fatigue factor by default · Customizable to your level
YCC — 15K
Sat. 29/08
15 km
Distance
~800m
D+
~2h30
Avg. time

The UTMB week youth race. A dynamic 15 km format for young runners around Chamonix.

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15% fatigue factor by default · Customizable to your level

Why prepare your race with Segly?

Big mountain trails share extremely variable profiles — large temperature swings, high-altitude sections, night segments, spaced-out aid stations. These are exactly the conditions where a precise race plan makes all the difference.

Segly splits your track at each format's official aid stations, calculates your passage times based on your actual level, and shows the forecast weather segment by segment up to 10 days before the start. Sodium, water, carbs and clothing are then automatically adjusted based on each section's conditions.

How do I use the pre-computed analyses?

Each "Analyze with Segly" link opens a pre-configured analysis with the race's official split at the aid stations, a fatigue factor set to 15% (the standard for top ultra-trail runners) and a reference time based on an average runner.

You just need to enter your own level (ITRA, UTMB Index or Be Trail) to get a personalized estimate. You can also adjust the fatigue factor to match your strategy — a more cautious start (negative FF) or a dynamic start (positive FF).

More races coming soon

This page is updated regularly with new trail and ultra-trail events. Races are added as the calendar unfolds — each time with the official aid-station split and a pre-computed analysis ready to customize.

Running an event that isn't listed yet? You can import your own GPX track and build your personalized analysis from scratch in minutes.

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