• Ultramarathon
  • 160.9 km
  • Dubuque
  • Event dates
  • Sold out

Mines of Spain 100 Ultramarathon

This race edition

Race date
Date not confirmed for this distance
Race timezone
Timezone not confirmed
Edition status
Status not confirmed

Entry options

2026 edition

Entry options are not yet confirmed for this edition. Check the organiser before making plans.

Decision summary

Mines of Spain 100 Ultramarathon at a glance

Cut-off average pace
12:18/km

33:00:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.

Typical conditions
82/100

Historical race-date favourability, not a forecast

Evidence depth
45 verified facts

Source facts available

Route details

Known course facts at a glance

Methodology →

Mines of Spain 100 Ultramarathon has known course details for its ultramarathon race. The summary below keeps the focus on what is confirmed for the course.

Official distance
160.9 km
Terrain
Trail
Scenery
Countryside, Forest, Riverside, Parkland, Coastal, Waterfront, City

Quick answers

What runners ask first

Where can I find the Mines of Spain 100 Ultramarathon route map?

Use the official course links on this page for the organiser route page, map PDF or route download.

Official course links

How hilly is the Mines of Spain 100 Ultramarathon?

The Mines of Spain 100 Ultramarathon is described as hilly. The course listing puts the climb at 4,267 m.

Where does the Mines of Spain 100 Ultramarathon route go?

The Mines of Spain 100 Ultramarathon route starts at Louis Murphy Park, 1700 South Grandview Ave, Dubuque, IA 52003 and finishes at Louis Murphy Park, 1700 South Grandview Ave, Dubuque, IA 52003. Underfoot, expect dirt, grass and rock trails; ranging from steep & technical single track to flat dirt single track to rolling & grassy double track. It passes Mines of Spain State Recreation Area, Louis Murphy Park, EB Lyons Interpretive Center, Mississippi river valley and Driftless region bluffs and prairies. An approximately 20-mile loop course.

What should runners know on race day for the Mines of Spain 100 Ultramarathon?

Drop bag service at all 4 aid stations, which runners pass through a total of 5 times per loop. 4. Pacers permitted - 100 mile after 3 loops (or after 2 loops if starting the 3rd loop after 7pm), 100K after 2 loops; only one pacer at a time, with pacer access limited to the start/finish (Louis Murphy Park) and Aid Station #3 at EB Lyons.

Race character

Scenery

  • Countryside
  • Forest
  • Riverside
  • Parkland
  • Coastal
  • Waterfront
  • City

Terrain

  • Trail
Elevation character
Hilly
Technicality
Moderate
Source-stated ascent
4,267 m
Net elevation
0 m

Entry, logistics and records

Records and field

Men's course record
17:45:20 (Jon Noll)
Women's course record
22:05:23 (Mary Namestnik)

Entry requirements

Entry status
Sold out: Sourced entry status says this edition is sold out.
Cut-off
100 mile: 33 hours (5pm Saturday), with an intermediate cutoff of 11:00am to start the 5th loop; 100K: 23 hours (7am Saturday), with an intermediate cutoff of midnight to start the 3rd loop.
Sold out
Yes
Qualification status
Not a qualifying race; open Entry trail ultra. An optional 7am early start is available for the 100 miler for runners aged 60 or older (standard start 8am).

Race day logistics

Aid stations
4
Pacers
Pacers permitted - 100 mile after 3 loops (or after 2 loops if starting the 3rd loop after 7pm), 100K after 2 loops; only one pacer at a time, with pacer access limited to the start/finish (Louis Murphy Park) and Aid Station #3 at EB Lyons.
Bag drop
Drop bag service at all 4 aid stations, which runners pass through a total of 5 times per loop.
Medal
Custom finisher's award for all finishers; 100 mile finishers receive a custom MoS100 belt buckle, and sub-24 hour finishers receive a special Sub-24 hour belt buckle.
Finisher tee
High quality race shirt and sweatshirt.

Access and course status

Start
Louis Murphy Park, 1700 South Grandview Ave, Dubuque, IA 52003
Finish
Louis Murphy Park, 1700 South Grandview Ave, Dubuque, IA 52003

Course facts

Course type
Laps
Surface
Dirt, grass and rock trails; ranging from steep & technical single track to flat dirt single track to rolling & grassy double track
Landmarks
Mines of Spain State Recreation Area, Louis Murphy Park, EB Lyons Interpretive Center, Mississippi river valley, Driftless region bluffs and prairies
Notable features
  • An approximately 20-mile loop course
  • the 100 mile runs 5 loops and the 100K runs 3 loops, each starting and finishing at Louis Murphy Park
  • Grassroots in feel yet meticulously organized
  • a member of the No Coast Trail Series and a Trail Sisters Approved event, with a substantial portion of race proceeds donated to the park for future trail maintenance and projects. Supported by Iowa DNR, Friends of the Mines of Spain, and the City of Dubuque

What are typical race-day conditions?

  • 12°CTypical temperature
  • 21 kphTypical wind
  • 3 mmTypical rainfall
  • 82Favourability /100
Typical conditions for the race date and locality, within the endurance-optimal window. These are climatological norms, not a forecast, and are shared across every distance at this event.