About
Run or walk the famous GM Milford Proving Ground!
April 18, 2026
Think you’ve got the fastest 5k or 10K around? Put your money where your mouth is and come race on this world famous automobile test track. The course is challenging and beautiful and this is the only chance most mere mortals will get to visit this unique location. We are so thrilled to be partnering again with GM for this one-of-a-kind event!
Prove you’re as fast as you say you are with our one-of-a-kind age and gender graded running race on this historic automobile test track. While Trivium has many fast, flat, PR courses, this USATF certified course is a bit more challenging!
Think you have what it takes to complete both the 5K and 10K? Race in the Double Event and earn a special double trouble commemorative item!
This event sells out so plan ahead! Learn more and register at the link below.
We’ll see you at the Proving Ground!
Details
When and Where
Saturday April 18th, 2026
GM Milford Proving Ground
Milford
, MI
Rules
Rules & Guidelines
In the event the race should be canceled for reasons beyond the control of the Race Director or Race Committee (inclement weather or unsafe weather conditions; local, state or national emergency), refunds will not be made, but race packets, including race shirts, will be available at a location to be determined. Information will be available on the race website.
Refund Policy: No refunds for any reason will be issued for this event within 30 days of the event start date. Earlier than 30 days before the event, a request may be made for a 50% refund (this will be 50% of entry fee, excluding any processing fees). Entries CANNOT be transferred or deferred to another event or year. NO EXCEPTIONS will be made to this policy. By registering for this event you agree to this refund policy. To request a refund, please contact us on our Contact page and select “Registration” as the reason for your message.
Transfer policy: Entries can be transferred to another individual for a $5 transfer fee. T-shirt size will not be changeable. Entries CANNOT be transferred or deferred to another event or year. To request a transfer, please contact us on our Contact page and select “Registration” as the reason for your message.