The Peak District Challenge is a picturesque trekking challenge that offers five levels of difficulty for hill walkers and runners: 10km (Back before Dark), then 25km (Copper), 50km (Bronze), 75km (Silver) or 100km (Gold Ultra). It's organised by Wilderness Development, an established outdoor activity company based in the Peak District.

It’s a race against the clock to see if you can cover 10km and be Back Before Dark, or complete the Copper Challenge in 9 hours, the Bronze challenge in 12 hours or the Silver or Gold challenge within 24 hours.

The routes all start at Hathersage and are loops.

The Back Before Dark 10k is the only Clockwise loop, following the pink line.

The Copper challenge follows the red lines anticlockwise from Hathersage to Baslow and back.

The Bronze challenge follows the bronze route to Castleton then Baslow and back.

The Silver challenge takes the silver route shown, covering large distances over relatively less hilly terrain.

The Gold Ultra challenge follows mainly the outermost route, following the yellow line shown above between checkpoints. It's the longest and steepest route.

Visit http://goo.gl/maps/r6ulJ for a closer look at the provisional routes. Final details of checkpoints, including grid references are emailed to registered entrants 7 days before the event.

On the way round, checkpoint volunteers monitor teams' safety and provide drinks and snacks along with motivation and encouragement! Water stations are provided, and for 25-100km routes all the refreshments along with a stew supper on Saturday evening are included in the price of your entry.