9th Mines of Spain 100 Mile Race
9th Mines of Spain 100 Mile Race is a 161 km ultramarathon in Dubuque, IA, United States, taking place on Oct 16 – Oct 17, 2026.
- Date
- Oct 16 – Oct 17, 2026
- Distance
- 161 km
- Elevation gain
- 4267 m
- Location
- Dubuque, IA, United States
- Format
- Fixed distance