
Mines of Spain Trail Races is a trail running and running race on August 8, 2026 in Dubuque, IA.
From the Organizer
Come join the MoS crew annually on the second Saturday of August for 4mi, 7mi and half marathon distances on some of eastern Iowa’s best and most challenging trails! The routes through Mines of Spain will challenge you with their difficulty and inspire you with their beauty as they climb the bluffs for views of the Mississippi, make their way through tall grass prairies and weave through dense hardwood forests.
The terrain is a diverse mix of dirt single and double track and wide prairie grass trails. There are some rocky, technical sections of trail as well as a few steep climbs but much of the course is smooth and runnable with just rolling hills to contend with.
In keeping with the beauty of the natural environment, the races will be as environmentally-friendly and sustainable as possible with local food and beer along with cup free racing and a zero waste approach from pre race to post race.
Profits will be returned to the Friends of the Mines of Spain to help maintain the trails.
Basics
Who? You and like-minded runners who love sharing beautiful trails.
What? 4mi, 7mi and half marathon distance races.
We will also again be hosting a free Mini-Mines Trail Race for kiddos ages 12 and under Friday evening during packet pickup. The Mini-Mines race will start at 6:30pm and there is no pre-registration required. We just ask that you show up early by 6:15pm Friday night to sign your little runners in.
When? Packet pickup – Friday from 5PM-7PM and pre-race Saturday from 6:15AM-7:15AM.
Races – Saturday starting at 7:30AM.
Where? EB Lyons Nature Center- 8991 Bellevue Heights Rd, Dubuque, IA 52003
Why? Because running on trails is awesome!
Runners are encouraged to carpool or ride their bike as parking is limited and we want to limit our impact. Water and Tailwind Nutrition drink (excellent source of calories and nutrition) will be provided on the course along with some basic sweet/salty snack foods. All runners are strongly encouraged to bring a handheld water bottle or hydration pack as we are a cup free race and there will be no disposable cups provided on course.
Events
Weather
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
81°
Typical Low
61°
Chance of Rain
30%
Based on US Climate Normals data from Dubuque Rgnl Ap, 5 mi from the venue.
Host City
Population
59,271
as of 2023
City Elevation
877 ft
Nearest Airport
DBQ
Dubuque Regional Airport · 7 mi
Major Hub
MKE
General Mitchell International Airport · 145 mi
Time Zone
Central Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at Mines of Spain Trail Races, put it on the calendar, and turn “someday” into a start date.
17
Days to train
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From Endurance Grid
This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Running off-road — dirt, singletrack, and mountain paths — from 5Ks to ultras. The terrain makes for an exciting twist and adventure in your running journey.
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
Prairie Dairy 5k
78 miles away
2026 New Glarus Woods Trail Run
57 miles away
Prairie Dog Trail Run
68 miles away
Tiger 10 Miler - 9th Annual Trail Race Presented by Byron Bank
75 miles away
Plan your trip
Coming from out of town? There's more to Dubuque than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to DubuqueFrequently Asked Questions (FAQs)
Mines of Spain Trail Races
Aug 8, 2026