ATW Welwyn Half Marathon

Experience the thrill of a stadium finish at the ATW Welwyn Half Marathon & 10k on October 4, 2026, a beloved autumn race that begins and ends on the prestigious 400m track of Gosling Sports Park. The half marathon route unfolds on a picturesque multi-terrain journey, guiding you through Welwyn's leafy fringes onto the serene, traffic-free Cole Green Way—a disused railway line transformed into a peaceful runner's haven. Meanwhile, the 10k shares the initial scenic 5km before carving its own memorable loop, ensuring both distances offer a perfect blend of challenge and natural beauty. Renowned for its friendly atmosphere and exceptional organization, the event features a lively warm-up, encouraging marshals, and a vibrant finish-line festival with catering for supporters. Every participant is celebrated with a custom medal, free professional photos, and the unique opportunity to sprint the final lap to roaring applause. With its hassle-free transfer policy and community-focused ethos, this race is the ideal season finale for runners seeking a well-supported, scenic, and spirited event. Secure your Early Bird entry for a crisp October morning where personal achievement is met with stadium-scale celebration.