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T1D 4x4x48
Friday, June 5, 2026 · Humboldt, Canada
Distances
6.4km
77.2km
Start location
About this race
Ready for a challenge? This ultramarathon features "4 MILES. EVERY 4 HOURS. FOR 48 HOURS." Run on a wilderness trail for two days, pushing your limits. The T1D 4x4x48 is for those seeking an endurance challenge.