Union Founder's Day 10K | 5K

Race Information

• Event Date: 2026-05-09
• Location: 201 E Main Street, Union, MO
• Race URL: Founder's Day 10K | 5K
• Beneficiary: Proceeds from the race will benefit the Union R-XI Foundation.

Event Overview

• Annual Tradition: Join us for the 48th Annual Founder's Day Run presented by the Union R-XI Foundation.
• Historical Significance: The race is known as the oldest and longest-standing road race in Franklin County and one of the oldest in the St. Louis metro area.
• Tough Challenge: This year will be no different, with the race maintaining its reputation as a tough event.
• Community Celebration: The event coincides with Union's annual Founder’s Day Festival.

Festival Activities

• Family-Friendly: Bring your family to see what Founder’s Day has to offer.
• Post-Race Refreshment: After finishing your race, grab yourself a FREE beer (21 and over).
• Live Music: Enjoy some live music following the race.
• Additional Festivities: The celebration includes a cornhole tournament, food trucks, music, and more.

About the Union R-XI Foundation

• Nonprofit Status: The Union R-XI Foundation is a 501(c)(3) tax-exempt nonprofit, charitable organization.
• Support Focus: The foundation supports students, staff, facilities, and programs of the Union R-XI School District.
• Learn More: To learn more about the Foundation, visit https://www.rxifoundation.org/.

Registration Details

• Early-bird Registration: Now through 4/9/26
• Late Registration: 4/10/26 - Race Day
• Online Registration Ends: 5/6/26
• Shirt Guarantee: Registrations submitted after 4/9/26 are NOT GUARANTEED A SHIRT.