Gran Trail Courmayeur - GTC55 course and race-day weather
- Courmayeur, Valle d'Aosta, Italy
- 53.3 km33.1 mi
- 3,500 m11,483 ft D+
- 6 aid stations
- 3 ITRA points
Analyzing route...
GTC55 course, section by section
The GTC55 course runs 53.3 km with 3,500 m of climbing and 3,505 m of descent - 66 m of climbing per kilometre. It tops out at 2,830 m, and its lowest point on the GPX is 1,025 m. 39% of the distance climbs at more than 3%, 42% descends at more than 3%, and the remaining 19% is flat or rolling.The GTC55 course runs 33.1 mi with 11,483 ft of climbing and 11,499 ft of descent - 347 ft of climbing per mile. It tops out at 9,285 ft, and its lowest point on the GPX is 3,363 ft. 39% of the distance climbs at more than 3%, 42% descends at more than 3%, and the remaining 19% is flat or rolling.
The organiser's 8 checkpoints split the course into 7 sections. The table gives each leg's own climb, descent, average grade and high point, measured on the official GPX.
Download the official GPX| Section | KmMi | Distance | D+ | D- | Avg grade | High point |
|---|---|---|---|---|---|---|
| Start - Courmayeur → Youlaz | 0.0-15.10.0-9.4 | 15.1 km9.4 mi | +1,499 m+4,918 ft | -696 m-2,283 ft | +5.3% | 2,182 m7,159 ft |
| Youlaz → Mont Fortin | 15.1-24.79.4-15.3 | 9.5 km5.9 mi | +1,072 m+3,517 ft | -355 m-1,165 ft | +7.5% | 2,867 m9,406 ft |
| Mont Fortin → Casermetta (Val Veny) | 24.7-32.415.3-20.1 | 7.8 km4.8 mi | +190 m+623 ft | -581 m-1,906 ft | -5.0% | 2,753 m9,032 ft |
| Casermetta (Val Veny) → Lago Combal | 32.4-36.120.1-22.4 | 3.7 km2.3 mi | +0 m+0 ft | -386 m-1,266 ft | -10.4% | 2,361 m7,746 ft |
| Lago Combal → Rifugio Maison Vieille | 36.1-44.722.4-27.8 | 8.6 km5.3 mi | +494 m+1,621 ft | -509 m-1,670 ft | -0.2% | 2,435 m7,989 ft |
| Rifugio Maison Vieille → Brenva | 44.7-49.227.8-30.6 | 4.5 km2.8 mi | +38 m+125 ft | -614 m-2,014 ft | -12.7% | 1,964 m6,444 ft |
| Brenva → Courmayeur (Finish) | 49.2-53.330.6-33.1 | 4.1 km2.5 mi | +55 m+180 ft | -214 m-702 ft | -3.8% | 1,385 m4,544 ft |
The climbs that shape the race
The track holds 5 major climbs and 7 major descents. The biggest climb runs from km 7 to km 13: +1,079 m over 5.9 km at an average of 18.0%. The steepest sustained climb averages 27.7% over 0.4 km from km 7, with pitches of 57.5%. The longest descent drops 1,322 m over 13.1 km from km 40 (down to Courmayeur (Finish)), at an average of 9.2%.The track holds 5 major climbs and 7 major descents. The biggest climb runs from mile 4 to mile 8: +3,540 ft over 3.7 mi at an average of 18.0%. The steepest sustained climb averages 27.7% over 0.2 mi from mile 4, with pitches of 57.5%. The longest descent drops 4,337 ft over 8.1 mi from mile 25 (down to Courmayeur (Finish)), at an average of 9.2%.
Distance, total climb and high point are the organiser's. Each section's climb, descent, grade and high point, the low point and the named climbs are measured on the official GPX with the same method as the interactive profile, so the sections can add up to a slightly different total.