A 50 km circular ultramarathon based around Chesterfield, Derbyshire, exploring countryside on the edge of the Peak District. The route links rural trails, bridleways, woodland paths and quieter lanes, with rolling elevation rather than sustained mountain climbs. Underfoot conditions vary between firm track and softer trail depending on weather. The course starts and finishes near the town’s historic crooked spire, with navigation approach, course marking and aid station locations defined by the organiser’s official race information.