Thursday, November 12, 2026
· In 11 days
Distance
Cutoff
Terrain
Difficulty
The marathon covers seven and a half clockwise laps of Caldecotte Lake. It has a hard time limit of 7 hours, and anyone finishing over 7:00 is recorded as a DNF.
Clockwise laps of Caldecotte Lake
Bespoke finisher medal
Water and toilets on every lap
Starter, timekeeper and race referee support
Start / Finish
Premier Inn, Lakeside Grove, Bletcham Way, Caldecotte, Milton Keynes MK7 8HP, on the shore of Caldecotte Lake
Premier Inn, Lakeside Grove, Bletcham Way, Caldecotte, Milton Keynes MK7 8HP
Route
What to bring
Suitable clothing
Suitable footwear
Suitable clothing and footwear
What you get
Finisher medal
Race starter, timekeeper and race referee
Water and toilets on every lap of the lake course
On the day
Toilets
Before you enter
Other questions
Water and toilets are provided on every lap of the lake course, so runners have access to refreshments and facilities throughout the race.
Race support includes a starter, a timekeeper and a race referee. Mandatory race briefings are held on site before the start.
Every finisher receives a unique bespoke medal.
The event is held in accordance with 100 Marathon Club rules. Participants must wear suitable clothing and footwear, confirm they are medically fit to compete, and accept the risks of participation.
Milton Keynes, United Kingdom
Thursday, November 12, 2026
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€46
entry fee