Best Race Series x Adidas 2026 - The Speed Test - 5K

Get ready to sprint into the excitement at the Best Race Series x Adidas 2026 - The Speed Test on Wednesday, September 16, 2026! Hosted by Best Athletics in the vibrant city of London, Greater London, this exhilarating event features a flat-out 5K challenge that is sure to test your speed and endurance. As the grand finale of the series, The Speed Test promises to be short, sharp, and decisive—where every second counts and there’s no room for recovery. Join fellow runners in this thrilling race, part of a dynamic series that includes four incredible events: a 10K, Half Marathon, 60-Minute Track, and the heart-pounding 5K. Each race is designed to push your limits and elevate your running skills, culminating in a chance to earn exclusive recognition and compete for the title of Best Race Series Champion! Don’t miss out on this opportunity to showcase your talent and embrace the spirit of competition in London!

The series finale is short, sharp, and decisive. The Speed Test is a flat out 5K where there’s nowhere to hide and no time to recover. Every second matters. This is the FINAL race in the series: each race can be entered individually Four Races. Four Tests. One Champion. 🏆 The 2026 Best Race Series, in partnership with adidas, is now live. Take on 10K, Half Marathon, 60‑Minute Track, and 5K challenges across the year. ​ Four races designed to push every part of your running: threshold, endurance, limits, and speed. Complete all four races to compete for end of series prizes, exclusive recognition, and your title as Best Race Series Champion!