Running Guides
Clear, practical answers to the questions runners actually ask, from your first 5K to your first ultra.
A complete beginner's guide to running your first 5K. How long it takes, the run/walk method, a week-by-week plan, pacing, and the mistakes to avoid.
VO2max explained for runners: what it measures, typical ranges, how watches estimate it, how it predicts race times, and how to improve it.
A practical guide to heart-rate zones for runners: the 5 zones explained, how to find your max heart rate, the 80/20 rule, and how to use them.
How running training differs from 5K to 10K, half marathon, marathon, and ultramarathon: plan length, weekly volume, long runs, key workouts, and fueling.