This year we've improved our course, allowing us to provide better facilities and to make this our biggest Boundary Run yet. The event will begin at the Cambridge University Sports Centre, with half-marathon runners finishing at Coldham's Common and full marathon runners to finish back at the Sports Centre. As always, it's going to be a great event, and we hope to see you there! The Boundary Run is a marathon (~26.2 miles) and half-marathon (~13.1 miles) race that takes participants around the boundaries of Cambridge. The course traverses roads, footpaths and trails, and incorporates some beautiful and not-often-seen areas of the city. It's a laid back event with a friendly and pressure-free atmosphere.