9th Mines of Spain 100 Km Race
9th Mines of Spain 100 Km Race is a 100 km ultramarathon in Dubuque, IA, United States, taking place on Oct 16 – Oct 17, 2026.
- Date
- Oct 16 – Oct 17, 2026
- Distance
- 100 km
- Elevation gain
- 2560 m
- Location
- Dubuque, IA, United States
- Format
- Fixed distance