- Who
- Rachael Nedrow, Kailey Diedrick, Jonathan Scannell, Andrew Purugganan
- What
- 39.981 second(s)
- Where
- United States (Los Angeles)
- When
The fastest sport stacking timed cycle relay is 39.981 seconds and was achieved by Rachael Nedrow, Kailey Diedrick, Jonathan Scannell and Andrew Purugganan (all USA) on the set of 'Guinness World Records Unleashed' in Los Angeles, California, USA, on 28 June 2013.