- Bernadette Benson
- 128.62 kilometre(s)
- Australia ()
The greatest distance run on a treadmill in 12 hours (female) is 128.62 km (79.92 miles) and was achieved by Bernadette Benson (Australia) in Perth, Australia, on 28 May 2016.
Bernadette Benson achieved this record at Zoom Fitness Osborne Park and ran on a True Fitness CS400 treadmill.