Prove It 5K & 10K – GM Milford Proving Ground

April 18, 2026 – Milford, Michigan

Looking for a Michigan spring 5K or 10K that’s unlike anything else? Prove It 5K & 10K gives you exclusive access to the GM Milford Proving Ground, one of the most iconic and secretive automotive testing facilities in the world. Normally closed to the public, this track opens just one day each year for runners and walkers to take on its twists, hills, and high-performance curves.

This isn’t your typical local race. The 5K packs 225′ of elevation gain in one lap of the course. The 10K doubles the challenge with two laps and 450′ of gain. Both races are USATF-certified, making them perfect for testing your speed and endurance. Want more? Register for the Double Event to run both distances back-to-back for the ultimate test.

 
Why Run Prove It?

• Race where few ever will – GM Milford Proving Ground is off-limits to the public
• Steeped in car culture – the same track where GM tests world-class vehicles
• Challenge yourself – 225′ of gain in the 5K, 450′ in the 10K
• USATF-certified – official distances, official results
• Double Event option – the ultimate test
• Part of the Trivium Mega Medal Series – 6 races, 1 giant connecting medal
• All paces welcome – run or walk the 5K, test your limits in the 10K, or do both
• Perfect spring timing – a one-of-a-kind way to kick off your 2026 racing season
   

Trivium Michigan Mega Medal Series

Prove It 5K & 10K is the first race in the 2026 Trivium Michigan Mega Medal Series. Each medal features the path of its race and connects to the others, forming one giant, six-piece medal by year’s end. Series registration also saves you money on entry fees.

 

2026 Mega Medal Series lineup:

• Prove It 5K & 10K – April 18, 2026 – Milford, MI
• Trenton Summerfest Half Marathon, 8K, & 5K – June 2026 – Trenton, MI
• Dearborn Decades 5K – August 2026 – Dearborn, MI
• Run the 313 5K – August 2026 – Detroit, MI
• Growler Gallop Atwater 10 Mile & 5K – September 2026 – Detroit, MI
• Black Toenail Friday Half Marathon & 7.5 Miler – November 27, 2026 – Commerce Township, MI
   

Prove It isn’t just another race—it’s your chance to experience Michigan’s car culture, test your fitness, and earn your place on the track.
Register today for the Prove It 5K & 10K on April 18, 2026, and start your season with a race you’ll never forget.