Derwent Reservoir 5 & 10 Milers

Cronkley Fell Race, a regular Durham Fell Runners event, takes place in Upper Teesdale around Holwick and Middleton-in-Teesdale, County Durham. The race covers about 10.5 miles (roughly 17 km) with around 1,800 feet of ascent, on an out-and-back course that runs parallel to the River Tees. The route..

Raby Castle Trail Runs takes place at Raby Castle, Staindrop, Darlington, DL2 3AH. The event offers 5-, 10-, and 15-mile trail routes around the castle grounds, longer distances by laps. Runners traverse about 200 acres of mixed terrain—rough trails, firm paths, grass paths and woodland—through park..

The Saturn 7 Hour Time Challenge in Durham is a trail running event held at the Durham Amateur Rowing Club along the scenic River Wear, offering views of the Cathedral. Participants can run as many laps as they wish within seven hours, with each lap measuring approximately 4.37 miles (7 km), subject..

Derwentside A.C.'s Hellhole 5 mile Trail Race runs at Shield Row School, King Edward Viii Terrace, DH9 0HQ. The 5-mile course climbs about 500 ft and uses a mix of tarmac, gravel and woodland trails, starting on a Sustrans track and passing Hellhole Wood. The event blends a friendly yet competitive..

The Cow Shed Backyard Ultra, held at Wheelbirks Parlour on Wheelbirks Farm in Stocksfield, Northumberland, is Greener Miles Running’s eco-conscious ultra, in the Big’s Backyard Ultra format. Competitors must complete a 4.1-mile loop every hour, with the bell rung on the hour until only one runner re..

Locomotion Trail Runs, held at Locomotion in Eaglescliffe, celebrate the 200th anniversary of the S&DR railway with two race options: 10 miles and 5 miles. The courses run partially along the original railway route, blending road and trail segments (3 miles on road and 7 miles on track for the 10‑mi..