Tuesday, August 23, 2016: Tempo Day: 1-mile warmup; 20-min tempo run; 1-mile cool-down. To determine your tempo run pace, add a half-minute to your present mile pace for a 5K. For example: If you currently run 19 min for a 5K, that's 6:10 pace. Add 30 seconds to get your tempo run pace of 6:40 per mile. Recalculate your pace as your fitness improves, about once a month.