Tor des Géants — 200 Miles Through the Italian Alps

The Longest Mountain Ultra in the World

Tor des Géants covers 205 miles through the Aosta Valley of northern Italy with 78,700 feet of elevation gain. It has a 150-hour cutoff. Most finishers complete it in 80-120 hours. Most runners sleep less than 4 hours total across the entire event.

It is the longest non-stop mountain ultra in the world by significant margin. Nothing else in organized ultrarunning combines distance, vertical, and alpine technical difficulty at this scale.

The race starts and finishes in Courmayeur — the Italian town that Western States runners will recognize as the mile 50 checkpoint of UTMB. Where UTMB passes through Courmayeur and keeps going, Tor des Géants begins there.

The Course

The course loops the entire Aosta Valley — the region of Italy that borders France to the west, Switzerland to the north, and the Gran Paradiso massif to the south. It crosses 25 mountain passes, visits dozens of alpine villages, and traverses the highest accessible terrain in the western Alps.

The Passes: Twenty-five col crossings above 8,000 feet. Several exceed 10,000 feet. The Col Loson at 11,893 feet is the highest point on the course — reached at mile 140, after runners have already been moving for 3-4 days.

Life Bases: The race has two major Life Bases — Valgrisenche and Donnas — where runners can access drop bags, sleep in cots, receive medical attention, and be assessed by race doctors. Most competitive runners spend 30-60 minutes at Life Bases. Many mid-packers sleep 1-2 hours at each.

Alpine Villages: The course passes through dozens of traditional Aosta Valley villages, many of which treat the race as a community event. Local residents place lanterns along the route at night, set out water and food for passing runners, and provide the kind of informal grassroots support that doesn’t exist in American race culture.

The Night Sections: Because the race takes 80-120 hours to finish, all runners experience multiple full nights on the mountain. Running through the Italian Alps at 3 a.m., navigating by headlamp on a high col with no other humans in sight, is the defining experience of Tor. It is unlike anything in Western ultrarunning.

Sleep Deprivation as Race Factor

No other major ultra makes sleep deprivation as central a variable as Tor des Géants. At 80+ hours of continuous movement, the human body’s sleep architecture becomes a race management tool.

Competitive runners use micro-sleep strategies — 10-15 minute naps at aid stations, strategic caffeine management, crew-assisted wake-up calls at Life Bases. Running hallucinations are common and expected in the back half of the race. Managing perception at mile 150 after 4 days of movement is a skill set that Western States runners never need.

Qualification and Entry

Tor des Géants requires UTMB Index points for entry. The qualifying threshold is high — reflecting the race’s expectation that finishers have demonstrated mountain ultra competence before they attempt 205 alpine miles.

The field is capped at approximately 900 runners. International representation is diverse — Italian, French, Swiss, American, Japanese, and Australian runners make up significant portions of the field.

Why It Sits Above Everything

UTMB is the world championship of ultrarunning. Tor des Géants is the event beyond the world championship. Runners who have won or podiumed at UTMB arrive at Tor and discover that the scale of the challenge requires a completely different race strategy, physical preparation, and mental framework.

It is not the hardest course per mile. It is the hardest course by total accumulated demand.

205 miles | 78,700 ft gain | 150-hour cutoff | Early September | Start/Finish: Courmayeur, Italy | Running since 2010