Reference Tables
Quick-reference tables, charts and standards.
Pace & Speed Conversion Chart
Convert min/km to min/mile to km/h to mph. Every 15 seconds from 3:00/km to 8:00/km.
Race Distances Reference
All standard race distances (5K to ultra), exact km and miles, world records and amateur targets.
Heart Rate Training Zones
Zone 1-5 definitions, % of max HR and HRR, perceived effort and how to calculate your max HR.
Running Shoe Size Conversion Chart
UK, EU, US men's and US women's sizes from UK 3 to UK 14, with foot length in cm.