Highlands Gravel Classic
📍 Fayetteville-Goshen, United States
Mammoth Lakes, CA, United States · 19 September 2026
Difficulty: 4/5 — Very hard
Mammoth TUFF is a challenging gravel race in California, offering approximately 143km with 2250m of elevation gain over a mix of rough gravel and paved sections. Riders will face a significant 16-mile climb and high-altitude conditions.
Visit official site →This race is for experienced gravel riders who thrive on challenging terrain, significant climbing, and high-altitude conditions.
Riders unaccustomed to sustained climbing, rough gravel, or high-altitude racing will likely find this event very demanding.
Training should prioritize sustained climbing, high-intensity gravel riding, and, if possible, altitude acclimation.
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The event offers three distances: 41 miles (66km), 67 miles (108km), and 89 miles (143km).
The course consists of a mix of gravel (63%) and paved sections (37%), described as rough terrain with steep climbs, including a notable 16-mile ascent and the Red Rock Canyon climb.
The longest 89-mile (143km) course features a total elevation gain of 7500 feet (2250 meters).
Yes, the 89-mile (143km) distance is the official qualifier for all younger categories, and the 67-mile (108km) distance qualifies men and women over 50. The 41-mile (66km) distance is not a qualifier.
Mammoth Lakes, where the race is held, is situated at 7,880 feet (2,400 meters) above sea level.
The Mammoth TUFF race is an annual event, scheduled for Saturday, September 19, 2026.
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