Health How runners can use the simple ‘1.5:1 rule’ to get faster and fitter – by actually running less – Women’s Health by Dr Natalie Singh - Health Editor July 4, 2026 by Dr Natalie Singh - Health Editor July 4, 2026 The "1.5:1 rule" is a training methodology for runners that suggests maintaining a ratio of 1.5 miles of easy, low-intensity running for every one mile of high-intensity speed work. By … 0 FacebookTwitterPinterestEmail