Most participants in a 5 km run (multi-location)
- Who
- Cancer Research UK
- What
- 101246 people
- Where
- United Kingdom (London,)
- When
- 04 June 2006
The largest simultaneous 5 km run was set by Cancer Research UK at the Race For Life One Big Day event and involved 101,246 participants at 23 locations across the UK, on 4 June 2006
Laura Hughes adjudicated attempt in London.