Immerse yourself in the enchanting South Downs for an unforgettable night-time running experience at the Dark Downs 50k and Half Marathon. This unique race series, set to begin as dusk falls on Saturday, September 27th, 2025, offers runners a chance to explore the rolling hills of this iconic landscape under starlit skies. As the sun sets over the South Downs, participants will embark on either a half marathon or the full 50k route. Both races feature looped courses that wind through runnable trails with minimal technical challenges, making them ideal for night running enthusiasts and those preparing for longer ultra-distance events. The cooler temperatures of evening provide an added layer of comfort as runners navigate the undulating terrain. The South Downs have earned recognition as a Dark Sky Reserve since 2016, offering unparalleled stargazing opportunities that enhance the race experience with breathtaking views of the night sky. Runners will be guided by high-visibility and reflective signage along fully marked courses, ensuring safety throughout their journey. Aid stations staffed by dedicated volunteers offer essential support at regular intervals. The 50k event also counts towards the newly introduced "South Downs Triple Crown," a challenge inviting runners to complete any three of our four upcoming 50k races for an additional badge of honor and camaraderie among fellow endurance athletes. For more detailed information, including course maps, registration details, and updates on race day logistics, visit UkUltra's website. Join us in the Dark Downs as we celebrate the beauty of night running amidst one of Britain’s most stunning natural landscapes. The event promises to be a memorable blend of scenic beauty, challenging terrain, and the camaraderie that comes with sharing an extraordinary experience under the stars.
Races Offered
Dark Downs 20 mile
Oct 03, 2026
straighten
Distance —
32.2K
terrain
Type —
Others
timer
30 days remaining
sell
£55.00
Dark Downs 50K 2026
Oct 03, 2026
straighten
Distance —
50K
terrain
Type —
Others
timer
30 days remaining
sell
£80.00
Dark Downs Half Marathon 2026
Oct 03, 2026
straighten
Distance —
21.1K
terrain
Type —
Others
timer
30 days remaining
sell
£46.00
Weather History
These values represent the 3-year monthly averages for October in Plumpton Racecourse.
thermostatTemperature
9.8° / 15.5°
wb_sunnyFeels like
6.7° / 12.7°
light_mode
Avg sunshine hours
6h 0m
water_drop
Avg rainfall
3.6 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
15.5 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
84.8%
wb_twilight
Sunrise
07:24
nightlight
Sunset
18:05
About Plumpton Racecourse
Learn more about the host city, Plumpton Racecourse.
Plumpton Racecourse is a National Hunt racecourse in the village of Plumpton, East Sussex near Lewes and Brighton. Racing first took place at Plumpton in 1884.