Knacker Cracker

The Knacker Cracker 10k is an exhilarating race that challenges runners with its rugged terrain and steep ascents. Set to take place on January 1, 2025, this notoriously tough course winds through the picturesque North Downs of Surrey.
Starting at the bottom of Box Hill, participants will navigate a route that takes them up Happy Valley rather than Juniper Top due to ecological concerns. The ascent is relentless and increasingly steep as runners tackle rough tracks and uneven paths along the old military road. After conquering this challenging climb, competitors descend through Denbies Vineyard before making their way back down Box Hill.
The race course totals exactly 10 kilometers with a cumulative elevation gain of 473 meters and descent of 335 meters. The panoramic views from Solomon's Memorial at the Box Hill Lookout offer breathtaking vistas over the North Downs, Mole Gap, Denbies Vineyard, and Dorking.
For those who dare to take on this grueling course, it promises more than just a physical challenge; runners will be rewarded with stunning scenery and a sense of accomplishment. The Knacker Cracker has earned its reputation as Britain's toughest 10k, having been named the country’s best trail race in 2012 and 2013, and top-rated 10k by Runner's World from 2008 to 2010.
Participants should be prepared for variable weather conditions but can hope for a warm and sunny day. Parking is available at Denbies Wine Estate with no exceptions allowed at the summit of Box Hill. Post-race, runners will need to walk back down to their vehicles after crossing the finish line.
In addition to the main race, there are also options for spectators looking to cheer on participants from key vantage points along the route. The foot of Burfoot Slope and the National Trust Lookout at the top of Box Hill provide prime viewing opportunities throughout the day.
Marshals play a crucial role in ensuring a smooth event experience by assisting with parking, course signaling, start assistance, finish line support, and goodie bag distribution. They receive hearty rewards including soup, rolls, recognition, and a complimentary entry into future races for their efforts.
For runners seeking to conquer Britain's most demanding 10k, the Knacker Cracker offers an unforgettable blend of natural beauty and athletic challenge.