Possibly the toughest, and certainly the remotest, of the northern Coast-to-Coast routes.
Like the classic C2C, the Reivers runs from Workington to Tynemouth. It takes a northerly course via Carlisle and rural Northumberland, with a truly wild 35-mile section through Kielder Forest until you emerge on the shores of the eponymous reservoir.
Surfaces can be rough and the ascents tough, and advance planning is essential to ensure you don't get stranded in an area without accommodation. But it's a thoroughly memorable ride which the experienced or ambitious tourer will treasure.