100 miles100KComing SoonSun Trail Running
Mines of Spain 100
Dubuque, Iowa
$300
100 Miler after Jul 31
40
Days Away
About This Race
A true Midwest trail race set in the beautiful bluffs, prairies and forests of the driftless region of eastern Iowa amongst the scenic setting of the Mississippi river valley.
Key Dates
Registration Closes
Invalid Date
Race Day
Oct 16, 2026
Get alerts for Mines of Spain 100
Registration opens, price changes, race updates: straight to your inbox.
Pricing
Current Price
$300
100 Miler after Jul 31
Price Progression
100 Miler after Jul 31
$300Jul 31, 2026
100K after Jul 31
$225Jul 31, 2026
100 Miler Registration
$275
100K Registration
$200
Race Planning
Plan Mines of Spain 100 with Crewable
Build your aid station plan, organize your crew, and dial in your nutrition strategy. Everything you need to finish strong.
Make Race PlanAre you the race director for Mines of Spain 100?
Claim this race to manage registration, volunteers, and race-day ops on Endurance HQ.