Semiquincentennial Endurance Series

A Virtual Endurance Challenge Honoring America's 250th Anniversary

Whether you're chasing a personal best, earning an extra helping of barbecue, or simply looking for a legitimate reason to escape the crowded vacation rental for a little while, there's a challenge for you.

Choose Your Challenge:

• 25K Virtual Challenge
• 250 Minute Challenge
• 250K Team Challenge

Run, walk, hike, ruck wherever you choose or complete all challenges. Complete your challenge anytime during event week. All races are virtual and can be completed anywhere on any surface you choose. 

Registration Special: Save $10 on the official Semiquincentennial Endurance Series t-shirt when you add it during registration. Special discount is only available when the shirt is added as part of your race registration.

July 4–10, 2026

Honor History. Challenge Yourself.  Keep Your Peace.

Then, go back for seconds.