Race Time Predictors

Slate (link working as of 27 Nov 2019)

Runners World (UK) (link working as of 27 Nov 2019)

Runner's World Running Pace Calculator (link working as of 27 Nov 2019)

Runner's World Age Grade Calculator (link working as of 27 Nov 2019)

Ultras (link working as of 27 Nov 2019)