A 50 mile ultramarathon through the Lincolnshire Wolds following trails and rural paths across rolling terrain. Elevation is moderate, gained through steady climbs and descents rather than steep ascents. Surfaces vary between firm track and softer trail depending on conditions. Navigation approach, checkpoints and aid station provision are set out in the organiser’s official materials.

• Other races at the same event:
Yellow Belly 50 Mile Winter Ultramarathon