Swingball, ball control, individual (duration)
- William Henderson, Alexander Hogstrom
- 7/35 hour(s):minute(s):second(s)
- Australia Federation Square,Melbourne
The longest swingball marathon is 7 hr 35 min set simultaneously by William Henderson (Australia) and Alexander Hogstrom (Sweden). The attempt was organised by Tennis Australia and held at Federation Square in Melbourne, Australia, on 29 January 2008.