The Lincolnshire Wolds are beautiful in summer but in February they are a different beast entirely. The Yellow Belly Winter 50 takes the classic circular 50-mile route through the undulating Wolds and adds the challenge of a British winter — frosty landscapes and limited daylight make a headtorch essential for a significant portion of the race. Starting and finishing at Swallow Village Hall with approximately 1,370m of elevation and a hard 18-hour cut-off.