Shop › 5K Sub 20 Minute Training Plan Image 1 of 1 5K Sub 20 Minute Training Plan £5.00 Target a 5K under 20 minutes with a 12-week plan built around a 4:00/km goal pace. Add To Cart Added! Target a 5K under 20 minutes with a 12-week plan built around a 4:00/km goal pace.