Running & Fitness What is the 80% rule in running? March 3, 2026 by Myaya | Leave a Comment The 80% rule in running, often referred to as the 80/20 rule, suggests that approximately 80% of your weekly running mileage should be done at an easy, conversational pace, while the remaining 20% should be dedicated to higher-intensity training. This approach aims to maximize aerobic development and minimize injury risk by prioritizing endurance-building runs. Understanding […] Read more ยป