Mark the calendar for September 5th, 2026, as Kielder Forest awaits runners of all levels with an array of trail running options set against its historical backdrop. The adventure kicks off at the picturesque Kielder Castle and invites participants to delve into the forest’s ancient woodlands through meticulously crafted courses. Begin your journey along the lush trails in a 5k or 10k run, perfect for beginners and casual runners seeking an intimate connection with nature's tranquility. These shorter distances offer serene views that make every step feel like stepping back in time, as you traverse some of Northumberland’s most beautiful pathways under a canopy of trees. For those craving more adventure, the half marathon (21km) presents a thrilling mix of terrains designed to challenge your endurance while rewarding you with stunning vistas at each turn. The route is ideal for intermediate runners aiming to test their limits in an environment that combines natural beauty and rigorous exercise seamlessly. Daring enthusiasts can opt for the full marathon distance, extending over 42 kilometers through Kielder Forest’s fast trails and steady inclines. This comprehensive course showcases diverse landscapes, offering a rewarding journey suited both for seasoned athletes striving for new personal bests as well as those looking to challenge themselves in a picturesque setting. Reaching beyond conventional race limits is the ultra-distance event at an impressive 50km. With trail running, fell racing elements, and breathtaking panoramic views awaiting every stride, this grueling yet fulfilling route promises nothing short of adventure for serious runners eager to explore further into Kielder Forest’s wild beauty. Adding a touch of wilderness charm, camping facilities are available in the heart of the forest itself over race weekend. Runners can extend their experience by spending nights under starlit skies amidst nature's splendor after completing their chosen distance on race day. To ensure you have all necessary information and assistance for your participation or any pre-event planning queries such as transfer arrangements, simply contact Maverick at info@maverick-race.com. Experience the magic of Kielder Forest this September with an event tailor-made to cater to every runner's passion.
Races Offered
Marathon - 41k
Sep 05, 2026
straighten
Distance —
41K
terrain
Type —
Running
timer
08:00
sell
£10.00
Ultra - 52k
Sep 05, 2026
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Distance —
52K
terrain
Type —
Running
timer
08:00
sell
£89.00
Half Marathon - 24k
Sep 05, 2026
straighten
Distance —
24K
terrain
Type —
Running
timer
08:30
sell
£10.00
Middle- 12k
Sep 05, 2026
straighten
Distance —
12K
terrain
Type —
Running
timer
09:00
sell
£10.00
Short - 5k
Sep 05, 2026
straighten
Distance —
5K
terrain
Type —
Running
timer
09:00
sell
£10.00
Weather History
These values represent the 3-year monthly averages for September in Kielder.
thermostatTemperature
9.0° / 15.1°
wb_sunnyFeels like
6.2° / 12.3°
light_mode
Avg sunshine hours
6h 42m
water_drop
Avg rainfall
3.4 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
14.6 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
87.4%
wb_twilight
Sunrise
06:43
nightlight
Sunset
19:25
About Kielder
Learn more about the host city, Kielder.
Kielder is a village and civil parish in western Northumberland, England. Located at the head of Kielder Water and in the north west of Kielder Forest, the village is within three miles of the Scottish border. In 2011 the parish had a population of 218.
