Iron Heart

FEB
13
2026
Spend Valentine season on Forest City singletrack at Maramec Spring Park with a mid February trail run. Options from 5K to 100 mile plus relays and camping invite runners of every level to enjoy scenic river side trails.
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

Always double-check with the organizer's website! This page may contain affiliate links.

Iron Heart : St. James, MO

Iron Heart is a mid-February trail running event held at Forest City MTB Trail, located at 21880 Maramec Spring Dr, St. James, MO. The event is described as a Valentine’s Day Trail Run and is presented as a multi-day event at Maramec Spring Park, with activities centered at the Massey Hill Shelter. Forest City MTB Trail offers about 11 miles of winding trails, including a mountain biking flow track. Split Second Timing is listed as the timing provider.

Distances, format and facilities

Distances offered include:

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

Event formats include solo runs, relay runs, and ultra distances. Relay awards are determined once all relay participants have finished. The 100K and 100M ultra options are noted with a 36 hour cut off. Camping is available at Maramec Spring Park with listed nightly fees for non-electric, electric, and full hookup sites, plus an additional per-person fee for ages 16 and over; children 15 and under are not charged. Off-site glamping access and park amenities such as trout fishing, hiking trails, museums, a café, river access, and modern bathrooms are mentioned. 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

Events nearby