- The Marathonmamas, Rebecca Habba, Cindy Graham, Candice Davis, Caroline Casswell, Joanne Lloyd, Elizabeth Murie, Victoria Nixon, Claire Tucker, Amanda Lorenzani, Meg Karmani
- 6:55:40 hour(s):minute(s):second(s)
- United Kingdom (Brighton)
The fastest marathon in a ten-person costume is 6 hr 55 min 40 sec and was achieved by The Marathonmamas (UK) in Brighton, UK, on 15 April 2018.
The attempt took place at the Brighton Marathon 2018. The ten dressed in a boat and costumes inspired by the Disney film Moana.