Running on 7–8 March 2026 in Kielder, Northumberland, Dark Skies Run @ Kielder is a signature night race set in one of the UK’s most famous dark-sky locations. Runners can choose from the 26.6-mile ultra-style loop, the 14-mile point-to-point-style route, or the shorter 10K option. The terrain is firmly trail/off-road, typically following lakeside paths and forest tracks that feel very different once darkness falls. It’s equal parts endurance challenge and atmosphere, rewarding steady effort, confident footing, and a strong headtorch beam.
Races
Race Date:
08 March, 2026
The Dark Skies Run @ Kielder 10K runs on Sunday, 8 March 2026, organised by Trail Outlaws, and is based at Kielder Waterside, Kielder Water, Northumberland (UK) with a fast, night-time trail loop around the reservoir paths.
Race Date:
07 March, 2026
The Dark Skies Run @ Kielder 11 Mile takes place on Saturday, 7 March 2026, organised by Trail Outlaws, starting and finishing at Kielder Waterside, Kielder Water, Northumberland (UK) for a starlit out-and-back towards the viaduct and back.
Race Date:
07 March, 2026
The Dark Skies Run @ Kielder Half Marathon (the event’s longer “half” option) takes place on Sunday, 7 March 2026, organised by Trail Outlaws, and runs under Kielder’s famously dark skies in Kielder Water & Forest Park, Northumberland, UK (starting near Kielder Dam and finishing at Hawkhirst Scout Camp).
Weather based on historical averages.
FAQs
What is the Dark Skies Run @ Kielder 10K?
How long is the Dark Skies Run @ Kielder 10K?
Where does the Dark Skies Run @ Kielder 10K take place?
What is the elevation gain of the Dark Skies Run @ Kielder 10K?
How can I prepare for the Dark Skies Run @ Kielder 10K?
How do I choose the right training plan for the Dark Skies Run @ Kielder 10K?
The Dark Skies Run @ Kielder 10K runs on Sunday, 8 March 2026, organised by Trail Outlaws, and is based at Kielder Waterside, Kielder Water, Northumberland (UK) with a fast, night-time trail loop around the reservoir paths.
The Dark Skies Run @ Kielder 10K is 10km long.
The Dark Skies Run @ Kielder 10K takes place in Hexham, Northumberland, UK.
The Dark Skies Run @ Kielder 10K elevation gain is 177 meters, which Runna classifies as a Moderate race.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Dark Skies Run @ Kielder 10K?
The Dark Skies Run @ Kielder 10K runs on Sunday, 8 March 2026, organised by Trail Outlaws, and is based at Kielder Waterside, Kielder Water, Northumberland (UK) with a fast, night-time trail loop around the reservoir paths.
How long is the Dark Skies Run @ Kielder 10K?
The Dark Skies Run @ Kielder 10K is 10km long.
Where does the Dark Skies Run @ Kielder 10K take place?
The Dark Skies Run @ Kielder 10K takes place in Hexham, Northumberland, UK.
What is the elevation gain of the Dark Skies Run @ Kielder 10K?
The Dark Skies Run @ Kielder 10K elevation gain is 177 meters, which Runna classifies as a Moderate race.
How can I prepare for the Dark Skies Run @ Kielder 10K?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Dark Skies Run @ Kielder 10K?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Dark Skies Run @ Kielder 11 Mile?
How long is the Dark Skies Run @ Kielder 11 Mile?
Where does the Dark Skies Run @ Kielder 11 Mile take place?
What is the elevation gain of the Dark Skies Run @ Kielder 11 Mile?
How can I prepare for the Dark Skies Run @ Kielder 11 Mile?
How do I choose the right training plan for the Dark Skies Run @ Kielder 11 Mile?
The Dark Skies Run @ Kielder 11 Mile takes place on Saturday, 7 March 2026, organised by Trail Outlaws, starting and finishing at Kielder Waterside, Kielder Water, Northumberland (UK) for a starlit out-and-back towards the viaduct and back.
The Dark Skies Run @ Kielder 11 Mile is 17km long.
The Dark Skies Run @ Kielder 11 Mile takes place in Hexham, Northumberland, UK.
The Dark Skies Run @ Kielder 11 Mile elevation gain is 249 meters, which Runna classifies as a Moderate race.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Dark Skies Run @ Kielder 11 Mile?
The Dark Skies Run @ Kielder 11 Mile takes place on Saturday, 7 March 2026, organised by Trail Outlaws, starting and finishing at Kielder Waterside, Kielder Water, Northumberland (UK) for a starlit out-and-back towards the viaduct and back.
How long is the Dark Skies Run @ Kielder 11 Mile?
The Dark Skies Run @ Kielder 11 Mile is 17km long.
Where does the Dark Skies Run @ Kielder 11 Mile take place?
The Dark Skies Run @ Kielder 11 Mile takes place in Hexham, Northumberland, UK.
What is the elevation gain of the Dark Skies Run @ Kielder 11 Mile?
The Dark Skies Run @ Kielder 11 Mile elevation gain is 249 meters, which Runna classifies as a Moderate race.
How can I prepare for the Dark Skies Run @ Kielder 11 Mile?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Dark Skies Run @ Kielder 11 Mile?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Dark Skies Run @ Kielder Half Marathon?
How long is the Dark Skies Run @ Kielder Half Marathon?
Where does the Dark Skies Run @ Kielder Half Marathon take place?
What is the elevation gain of the Dark Skies Run @ Kielder Half Marathon?
How can I prepare for the Dark Skies Run @ Kielder Half Marathon?
How do I choose the right training plan for the Dark Skies Run @ Kielder Half Marathon?
The Dark Skies Run @ Kielder Half Marathon (the event’s longer “half” option) takes place on Sunday, 7 March 2026, organised by Trail Outlaws, and runs under Kielder’s famously dark skies in Kielder Water & Forest Park, Northumberland, UK (starting near Kielder Dam and finishing at Hawkhirst Scout Camp).
The Dark Skies Run @ Kielder Half Marathon is 21km long.
The Dark Skies Run @ Kielder Half Marathon takes place in Hexham, Northumberland, UK.
Runna classifies the Dark Skies Run @ Kielder Half Marathon elevation profile as Moderate.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Dark Skies Run @ Kielder Half Marathon?
The Dark Skies Run @ Kielder Half Marathon (the event’s longer “half” option) takes place on Sunday, 7 March 2026, organised by Trail Outlaws, and runs under Kielder’s famously dark skies in Kielder Water & Forest Park, Northumberland, UK (starting near Kielder Dam and finishing at Hawkhirst Scout Camp).
How long is the Dark Skies Run @ Kielder Half Marathon?
The Dark Skies Run @ Kielder Half Marathon is 21km long.
Where does the Dark Skies Run @ Kielder Half Marathon take place?
The Dark Skies Run @ Kielder Half Marathon takes place in Hexham, Northumberland, UK.
What is the elevation gain of the Dark Skies Run @ Kielder Half Marathon?
Runna classifies the Dark Skies Run @ Kielder Half Marathon elevation profile as Moderate.
How can I prepare for the Dark Skies Run @ Kielder Half Marathon?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Dark Skies Run @ Kielder Half Marathon?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Dark Skies Run @ Kielder or Trail Outlaws Ltd. All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Dark Skies Run @ Kielder website.
