Iron Heart

FEB
13
2026
Iron Heart Trail Run brings Valentine vibes to the Forest City MTB Trail in St James Missouri on Feb 13. Choose a distance from short trail runs to epic ultras, race solo or with a relay and camp riverside on the Meramec for a full outdoors weekend.
Fri 13 Feb 2026
100 miles 100 kilometers 50 miles 50 kilometers 20 miles 15 miles 20 kilometers 10 miles 15 kilometers 10 kilometers 5 miles 5 kilometers

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Event overview

The Iron Heart trail run is scheduled for mid-February, with a listed date of February 13, 2026, and is based in St. James, Missouri. The event base address is 21880 Maramec Spring Dr, St James, MO 65559. It is presented as a Valentine’s Day trail event emphasizing outdoor trail running on the Forest City MTB Trail. Timing services will be provided on site by Split Second Timing. Relay awards are presented after all relay team members have finished.

Course options, distances, and camping

The event uses the Forest City MTB Trail, which has about 11 miles of winding trails and a mountain biking flow track. Distances offered include:

  • 5K
  • 5M
  • 10K
  • 10M
  • 15K
  • 15M
  • 20K
  • 20M
  • 50K
  • 50M
  • 100K
  • 100M

Relay and solo entries are available, and relays may be run simultaneously with other entries. A 36 hour cut off is noted for the longest ultra distances. Camping is available along the Meramec River at Maramec Spring Park. Tent and RV site fees are listed as non-electric sites $19 minimum per night, electric sites $39 minimum per night, and full hookup sites $59 minimum per night; additional person fee is $10 per night for ages 16 and over, with no charge for children 15 and under. The event location includes the Massey Hill Shelter with parking, tables, a fire pit, and restroom facilities. Visit the organization's website for the most recent information.

100 mi
100m
100 km
100k
50 mi
50m
50 km
50k
20 mi
20m
15 mi
15m
20 km
20k
10 mi
10m
15 km
15k
10 km
10k
5 mi
5 km

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