- Surfing Madonna Oceans Project
- 4,288 people
- United States (Encinitas)
The largest race on sand numbers 4,288 participants, and was achieved by the Surfing Madonna Oceans Project (USA) in Encinitas, California, USA, on 5 November 2017.
The course includes 5k, 10k, 15k distances for adults, matching races for parents and children, and a special 1k for only children.