Winter Enigma Marathons
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Mystery Marathon
The Mystery Marathon takes place on 21st May 2026 at the Premier Inn, Lakeside Grove, Bletcham Way, Caldecotte, Milton Keynes MK7 8HP. The route consists of seven and a half laps around Caldecotte Lake run in an anti clockwise direction. A route description is provided at the event location.
The marathon is organised under the 100 Marathon Club rules. There is a hard time limit of seven hours for the marathon; anyone finishing after this limit will be recorded as a DNF. All finishers receive a bespoke medal.
On course support includes a starter, timekeeper and race referee. Facilities listed for the event include a large pub car park and water and toilet stops on each lap. Participants are required to wear suitable clothing and footwear and to be medically fit to compete.
Entry for the marathon is priced at £39.99. The organiser operates a no refund policy. Entries may be deferred up to seven days before the event to another Enigma Running event that is still open to entries; deferred entries must be used within 18 months.
By entering, participants declare they will be 18 years or older on the day and accept the risks of taking part. The organiser disclaims liability to the extent permitted by law. Visit the organization's website for the most recent information.
