An uncompromising 100-mile ultramarathon through the breathtaking Lincolnshire Wolds AONB, starting and finishing at Swallow Village Hall in Lincolnshire. The route follows undulating trails across the Wolds with approximately 2,750m of ascent and is fully marked and supported throughout. Organised by Yellow Belly Ultras, who are known for their community-focused approach and generous cut-off times.