Run
Aerobic Threshold with Closer
Mid-Distance : 12k
Marathon : 15k
Ultra 18k
For the final 5k at the top of every 1k, 1:30 RPE 8 returning to nasa breathing for the remainder of the 1k
Run
Aerobic Threshold with Closer
Mid-Distance : 12k
Marathon : 15k
Ultra 18k
For the final 5k at the top of every 1k, 1:30 RPE 8 returning to nasa breathing for the remainder of the 1k