Two male mountain bikers, one aged 44, one aged 50, were reported overdue from a ride. One was reported to suffer from a medical condition. Clues in their car suggested they had either gone over into Langdale, Tilberthwaite and Claife Heights, or onto the Helvellyn range. With the aid of Keswick and Patterdale MRTs, we searched a large area for them. They were located at 9.30am, next morning, having spent the night in the Armboth Fell area. If they'd left a route with somebody, taken lights, and chosen a route that was possible to complete in daylight, they would have saved everybody a lot of effort! One was taken to hospital suffering from hypothermia.