Two races at the same time on the same day using the same course. A 13.1 mile trail race and a trail relay race covering with 3 legs to cover the 13.1 miles.. For full details visit the Shrewsbury AC website - Eastridge Trail Half (http://www.shrewsburyac.org.uk/our-races/eastridge-trail-half/) and Eastridge Trail Half Relay Challenge (http://www.shrewsburyac.org.uk/our-races/eastridge-trail-half-relay-challenge/)