0 a running race that is longer than a marathon (= a race that is approximately 26 miles) -- （比马拉松距离还要长的）超级马拉松，超马
An ultramarathon is usually on the order of 50 or 100 miles.
At 10,430 feet, Leadville is an extreme place to host a 100-mile ultramarathon.
In his five-year ultramarathon career he has won nine events, including the 50-mile Squaw Peak race.
Usually it involved feats of endurance which would now be classified as ultramarathon.
Sports featured include climbing, kayaking, sailing, windsurfing and kitesurfing, various forms of bicycle racing, and cross-country running, especially ultramarathon and multi-discipline events.
This multi-day event comprises ultramarathon, 24-hour race and a 48-hour race.
The race is billed as the toughest ultramarathon in the world where the temperatures can drop to -50 degrees plus wind chill.
He ist best known for his successful career as an ultramarathon runner.
