Union Founder's Day 10K | 5K

🏆 Race Overview

Proceeds from the race will benefit the Union R-XI Foundation.

🎉 Event Details

• Date: 2026-05-09
• Location: 201 E Main Street, Union, MO
• Race Link: Union Founder's Day 10K | 5K
• Experience: 48th Annual Founder's Day Run presented by the Union R-XI Foundation

🏃‍♂️ Race Characteristics

Join us for the 48th Annual Founder’s Day Run presented by the Union R-XI Foundation. Since the Union R-XI Foundation took over this event, the race has returned to its roots with an evening start during Union's annual Founder’s Day Festival. Being the oldest and longest-standing road race in Franklin County and one of the oldest in the St. Louis metro area, the Founder’s Day Run has been known to be a tough race. This year will be no different.

🎶 Community Celebration

Come early and bring your family to see what Founder’s Day has to offer. Then after you finish your race, grab yourself a FREE beer (21 and over) and stick around and enjoy some live music. Founder’s Day is an annual family-friendly event and takes place at the courthouse square in downtown Union, MO. The celebration is sponsored by the Union Parks & Recreation Department and local businesses with the primary goal of bringing our community together to celebrate our great city. The festivities include:

• Cornhole tournament: Join in for some friendly competition
• Food trucks: Enjoy delicious local food options
• Live music: Relax and enjoy performances
• Family activities: Fun for everyone at the festival

📚 About the Foundation

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

📝 Registration Information

• 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.