Box Hill presents its renowned running challenge, inviting athletes from all walks of life to participate in an unforgettable trail-running experience across four distinct courses: 5k, 10k, half marathon (21k), and the gruelling full marathon distance of 42.2km. Each route offers a mesmerising journey through lush landscapes that change with every stride – from winding trails among ancient woodlands to breathtaking views over scenic valleys. The race promises not only challenging terrain but also unparalleled encouragement, supported by RunThrough’s committed team, who ensure participants are met at each kilometre marker with cheers and motivation. A bespoke medal awaits runners as they cross the finish line; a unique memento designed specifically for this event that captures both the spirit of competition and community. This year's race is officially licensed under UK Athletics' guidelines by the Trail Running Association (TRA), ensuring an equitable environment where athletes can showcase their skills against high standards. Participants with Eventscot Athlete or TRA membership are encouraged to take advantage of a special £2 discount, making it easier for trail enthusiasts across all levels to join in this exhilarating event. Beyond competitive pursuits, Box Hill offers runners the chance to immerse themselves in nature’s tranquillity and bond with fellow sports lovers. Join us as we celebrate the joy that running brings while challenging oneself on some of Britain's most iconic trails. Don’t hesitate – register now for an adventure through unforgettable scenery and dynamic terrain, where every step reveals a new vista or milestone in your journey. With its emphasis on community spirit and natural beauty, this event promises to be more than just another race; it’s an experience that will leave you with memories lasting long after the final strides are made. This season's run at Box Hill also includes exclusive savings for members of Eventscot Athlete or TRA through a special £2 discount during registration. This initiative supports both runners and the wider community, fostering inclusivity in the trail-running culture while rewarding those who stay active within their running circles year-round.
Races Offered
31k
Oct 10, 2026
straighten
Distance —
31K
terrain
Type —
Running
timer
07:00
sell
£75.00
50k
Oct 10, 2026
straighten
Distance —
50K
terrain
Type —
Running
timer
07:00
sell
£95.00
21k
Oct 10, 2026
straighten
Distance —
21K
terrain
Type —
Running
timer
08:00
sell
£55.00
Weather History
These values represent the 3-year monthly averages for October in Tadworth.
thermostatTemperature
9.2° / 15.1°
wb_sunnyFeels like
6.3° / 12.4°
light_mode
Avg sunshine hours
6h 6m
water_drop
Avg rainfall
2.8 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
14.0 km/h (Gentle breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Low (2.8)
humidity_mid
Humidity
85.6%
wb_twilight
Sunrise
07:26
nightlight
Sunset
18:05
About Tadworth
Learn more about the host city, Tadworth.
Tadworth is a large suburban village in Surrey, England in the south-east of the Epsom Downs, part of the North Downs. It forms part of the Borough of Reigate and Banstead. At the 2021 census, Tadworth had a population of 7,095.