Photo: © Altra Kielder MarathonTRAIL21K10K
Altra Kielder Marathon
Kielder, United KingdomChoose the distanceTap a distance: the course, fees, times and rules below update for that race.
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At a glance
Altra Kielder Marathon 2027 takes place on 2 October 2027 – 3 October 2027 in Kielder, United Kingdom. Distances: 42.195 km, 21.098 km, 10 km. First start at 10:15.
- Date
- Saturday, 2 October 2027 – Sunday, 3 October 2027
- Location
- Kielder, United Kingdom
- Distances
- Marathon · 42.195 km · Competitive
- Half marathon · 21.098 km · Competitive
- 10 km · Competitive
- Start times
- Maratona 10:15 · Mezza maratona 10:15 · 10 km 13:00
- Entry fees
- Marathon £42 · Half marathon £35 · 10 km £25
- Registration
- Registration open · Register now ↗
- Official website
- kieldermarathon.com ↗
Last updated: 19 October 2026
The race
The Altra Kielder Marathon, billed as Britain's most beautiful marathon, takes place on Sunday 3 October 2027 on an almost entirely off-road course around Kielder Water in Northumberland, northern Europe's largest man-made lake.
The weekend opens on Saturday 2 October with the 10K (13:00); on Sunday the marathon and half marathon start at 10:15. Super early bird prices, valid until 30 November 2026, are £42, £35 and £25.
Entry fees
MaratonaGBP
- Until 30 November 2026Nowsuper early bird£42
Rules and requirements
Minimum age18 years
Where it is
Kielder · United Kingdom© OpenStreetMap · OpenFreeMap
Race-day weather
02 OCT 2027 · average of the last 10 years (2017–2026)Rain is common
Temperature on race day
8°● At the start 11°13°
Low / high8° / 13°At the start (10:15): 11°
Rain6.2 mmRain on 67% of days
Wind25 km/h
Sunrise07:14
