The Spine (260-odd miles Edale-Yetholm in 7 days) and Spine Challenger (108 miles Edale - Hawes in 60h) - the latter including a Mountain Rescue team fundraising challenge - kicks off Saturday morning. 7am for the Spine Challenger, 10am for the Spine proper.
FOr all you dot-watching fiends there is of course tracking available
Website is here: http://thespinerace.com