Welwyn Half Marathon

OCT
4
2026
Enjoy a scenic start and finish on the Gosling track at ATW Welwyn, with half marathon and 10k routes along the traffic free Cole Green Way. Family friendly with a free 400 m fun run for kids, photos and medals for finishers.
Half Marathon 10 kilometers

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Event overview

The ATW Welwyn event is held at Gosling Sports Park, Stanborough Road, Welwyn Garden City, Hertfordshire. The main races start and finish on the 400 m athletics track. The half marathon route leaves the stadium, runs through the outskirts of Welwyn, follows the Cole Green Way - a traffic-free former railway path - includes a short loop, then returns along the Cole Green Way and finishes with a lap of the track. The 10k shares the same opening 5 km as the half marathon, then follows a separate loop back to the stadium. The event is licensed by UK Athletics and chip-timed by Event Chip Timing. A three-hour cut-off time applies; after this, marshals and signage are no longer available.

Race formats and facilities

Distances:

  • Half marathon
  • 10k
  • 400 m fun run for children

A free 400 m fun run for children takes place shortly before the main races; children may register on the day and parents may join. The event includes a warm-up led by personal trainers and a professional commentator at the finish. Spectators can purchase food and drink from caterers. Finishers receive a custom-designed medal, free professional race photos, and a selection of snacks. Limited paid parking is available at the venue with additional parking in Welwyn town centre; final parking details appear in pre-race information. The event lists Alzheimer’s Research UK as a partner charity and provides fundraising and donation options at checkout. Visit the organization's website for the most recent information.

Half Marathon
Welwyn Half Marathon
10 km
10k
Fun Run

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