ATW Welwyn Half Marathon

The ATW Welwyn Half Marathon & 10k takes place at Gosling Sports Park in Welwyn Garden City, Hertfordshire. Both races start and finish on the 400m athletics track, with the half marathon route leading runners through the scenic, leafy outskirts of Welwyn and along the traffic-free Cole Green Way, a disused railway line. The 10k shares the first 5km of the half marathon course before turning back.

Held in autumn, the event offers a well-marked, supportive atmosphere with marshals, professional timing, and a lively finish featuring refreshments, a commentator, and a custom medal. A free children's fun run is also included, making it a family-friendly occasion. Visit the organization's website for the most recent information.