The Piasa takes place on May 16, 2026. That's in 1 month.

Where is The Piasa located?

The Piasa is held in St. Louis, Missouri, United States.

What distances are available at The Piasa?

The Piasa offers the following distances: 50K, 25K, 12.5K.

How do I register for The Piasa?

You can register for The Piasa through the official registration page.

What is the typical weather for The Piasa?

Based on historical data, you can expect temperatures between 57°F and 77°F on race day. There's approximately a 17% chance of precipitation.

The Piasa (12.5K-50K) - May 16, 2026 | St. Louis, MO

Embark on a legendary challenge at The Piasa, an inaugural trail race set to test your limits on May 16, 2026. While listed near St. Louis, MO, this epic event unfolds within the rugged bluffs and forested ravines of Pere Marquette State Park in Grafton, Illinois. Runners can choose their confrontation with the Piasa across three demanding distances: a 12.5K, a 25K, and the ultimate 50K. Typical race day conditions in mid-May bring comfortable highs around 77°F and lows of 57°F, with only a 17% chance of precipitation, offering ideal weather to tackle the trails.

The Piasa course is a true test of grit, with technical footing and descents demanding unwavering focus. Forget short climbs; these trails feature sustained ascents that lead to significant elevation gain, particularly for the 50K distance, which boasts over 4,000 feet of climbing. The stunning natural beauty of the park's scenery will lure you in, but the demanding terrain ensures that only the resilient will truly appreciate it. What sets The Piasa apart is its deep connection to the mythical Piasa, "the bird that devours men," a legendary winged beast from Native American lore said to dwell in these very bluffs. Runners can face this challenge solo or in a unique "Buddy Division" format, conquering the course as a team.

This race rewards both speed and resilience, offering custom, hand-crafted Piasa artwork to top overall and age-group finishers, making your achievement a tangible piece of local artistry. Packet pickup will be available at the Pere Marquette Visitor Center, with the 50K starting at 6:00 AM and the 25K and 12.5K beginning at 7:30 AM, with racing concluding by 2:00 PM. Prepare to be pushed to your limits where legend lives and trails do not relent until there is nothing left to give.