The Piasa

MAR
27
2027
Trail races at Pere Marquette State Park on March 27, 2027, featuring technical trails and three distances: 12.5k, 25k, 50k.
Sat 27 Mar 2027
50 kilometers 25 kilometers 13 kilometers

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The Piasa Trail Races

The event name references a mythical creature from the Illiniwek (Algonquian) language often translated as "the bird that devours humans." The race draws on that local legend for its identity but is staged as a trail running event in Illinois.

The Piasa II is scheduled for Saturday, March 27, 2027, at Pere Marquette State Park in Grafton, IL. The event offers three trail distances:

  • 12.5k
  • 25k
  • 50k

The course runs through rugged bluffs and forested ravines. The footing is technical, descents require concentration, and short climbs do not exist on these trails. Course maps are provided for each distance. Visit the organization's website for the most recent information.

50 km
50k
25 km
25k
13 km
12.5k

Events nearby

Run Witch Run in Cottleville on October 31 features 1 mile, 5K, 10K, a kids dash, stroller race, virtual option, and a costume contest.
A 7.8 mile trail run through Pere Marquette State Park in Grafton, IL on 12/12/2026 with packet pickup, pre race coffee and post race awards held in the park lodge. The event is planned to run in most weather conditions.
January trail event at Creve Coeur Park with 1 Mile, 5K, 10K and half marathon options on mixed paved and non technical trails, plus post race hot drinks and music.
Multi-distance running event in historic downtown St. Charles with flat courses along the Katy Trail, a stroller division, and a post-race celebration in Frontier Park.
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