- Glenn Pope, Jamie Blair, Katie Bailey, Hannah Bierre
- 61:15:43 hour(s):minute(s):second(s)
- Australia (Melbourne)
The longest marathon playing tennis doubles is 61 hr 15 min 43 sec, and was achieved by Glenn Pope, Jamie Blair, Katie Bailey, (all Australia) and Hannah Bierre (New Zealand), in Melbourne, Victoria, Australia, from 28 February to 2 March 2019.
The record attempt took place at The National Tennis Centre at Melbourne Park.