Runderwear London Shakeout Run 2026

Runderwear’s official shakeout is a feel-good, easy 5K designed to loosen the legs and soak up the London Marathon weekend buzz. The run sets off from Admiralty Arch (by Trafalgar Square) and keeps things social, with all paces welcome and a chance to win Runderwear prizes along the way. It’s free to join, but spots are limited—expect a lively mix of runners in town for race day.

Good to know:

• Arrive a little early for check-in and a smooth start
• Plan for typical London spring weather and light layers
• Limited capacity; pre-registration is recommended