Half Marathon races near London

London Training Notes

London hosts 2 Half Marathon races in 2026 within 80 km of the city centre — upcoming dates, recurring series, and other races nearby, all in one place.

Locals run London through parks, pathways, and low-drama loops. One loop covers 75 km with a gain of 14 m. Another loop runs 49 km and gains 43 m. A third loop runs 48 km and gains 85 m when you want a sharper day. SUMMER NIGHT 5K, Springbank Road Races London, Turkey Trot, and Halloween Haunting keep the race calendar honest. Locals build the run-club feel around repeat routes, race mornings, and easy group miles.

London Cycling Club sets the tone for recreational riding, and Attack Racing gives youth riders a real development path. London Centennial Wheelers keeps touring and road racing in the mix, while CAN-BIKE London, London Cycle Link, and Western Active Transportation Society support daily riding. The city gives cyclists more than 350 km of pathways, bike lanes, and cycle tracks. The Thames Valley Parkway runs 43 km and connects to more than 150 km of additional pathways. Fanshawe Conservation Area gives mountain bikers a lake loop through forests and open meadows. Boler Mountain is where locals go for singletrack, climbs, and beginner or advanced loops.

May through October feels like the clean training block here, with Gremlins running Thursday evening group rides from May 1st to October. Winter mornings drop to 5°C, so locals ride early when intervals are on the plan. Summer weekends suit long Thames Valley Parkway spins, Fanshawe singletrack, and 5K race efforts without making the day complicated. Winter changes the rhythm for both sports. Heavy snow is rare, but snow usually falls at least once each winter, so locals shift toward steadier runs, indoor track cycling at Forest City Velodrome, and lower-risk Z2.