Immerse yourself in the rugged beauty of the Scottish-English borderlands with the Dirty Reiver, an epic 200km off-road cycling challenge. This gravel grinder adventure takes you through remote forest access roads that wind their way across vast stretches of woodland and open moorland, offering breathtaking views of this stunning region. For those seeking a slightly shorter journey, the Dirty One Thirty presents a formidable yet rewarding 130km route, weaving through some of Britain’s most picturesque landscapes. Both events demand endurance and technical skill as you navigate varied terrain that includes steep climbs and fast descents. The Dirty Sixty Fiver/Dirty E-Reiver is designed for riders who prefer a more compact experience while still enjoying the thrill of off-road cycling. This 65km course can also be tackled by electric bike enthusiasts, making it accessible to a wider range of cyclists looking to explore this scenic area at their own pace. Each event offers an intimate connection with nature as you pedal through remote areas that are rarely seen outside of local communities. The terrain is challenging but rewarding, providing ample opportunities for both seasoned gravel grinders and adventurous newcomers alike to test their limits against the rugged beauty of the borderlands. Riders will encounter a mix of technical singletrack trails, smooth forest roads, and rougher paths that demand skillful handling of your bike. As you pedal through this historic region, you’ll be treated to panoramic views stretching across rolling hills and dense woodlands. Whether you’re chasing personal records or simply seeking an unforgettable cycling experience in one of Britain’s most captivating landscapes, the Dirty Reiver series promises a journey that will leave lasting memories. With its combination of scenic routes and challenging terrain, these events are not just races but adventures into some of the UK's wildest corners. Join fellow cyclists as they take on this unique challenge and explore areas where few have ventured before.
Races Offered
Dirty 130km
Apr 24, 2027
straighten
Distance —
130K
terrain
Type —
Cycling
timer
229 days remaining
sell
£95.00
Dirty E-Reiver (65km)
Apr 24, 2027
straighten
Distance —
65K
terrain
Type —
Cycling
timer
229 days remaining
sell
£80.00
Dirty Reiver 200km
Apr 24, 2027
straighten
Distance —
200K
terrain
Type —
Cycling
timer
229 days remaining
sell
£110.00
Dirty Sixty Fiver
Apr 24, 2027
straighten
Distance —
Dirty Sixty Fiver
terrain
Type —
Cycling
timer
229 days remaining
sell
£80.00
Weather History
These values represent the 3-year monthly averages for April in Kielder Castle.
thermostatTemperature
3.7° / 11.1°
wb_sunnyFeels like
-0.4° / 6.8°
light_mode
Avg sunshine hours
8h 3m
water_drop
Avg rainfall
2.9 mm
ac_unit
Avg snowfall
0.1 cm
air
Avg wind speed
14.5 km/h (Gentle breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (3.5)
humidity_mid
Humidity
82.0%
wb_twilight
Sunrise
06:05
nightlight
Sunset
20:15
About Kielder Castle
Learn more about the host city, Kielder Castle.
Kielder Forest is a large forestry plantation in Northumberland, England, surrounding Kielder village and the Kielder Water reservoir. It is the largest man-made woodland in England with three-quarters of its 250 square miles (650 km2) covered by forest. The majority of the forest lies within Kielder Water and Forest Park, with the southern tip known as Wark Forest lying within Northumberland National Park. The forest is next to the Anglo-Scottish border.
