These are the age brackets that each runner can race within to compete with those in a similar age group. 2025 will see the introduction of Age Group Winner Prizes for the Sky Sprint 10k, Sky Run 20k, Bright Ultra 100k and Sky Marathon 42k. Ages will be calculated by the runners age on the day of the Race.

U21: 0 - 21

Open: 22 - 39

Masters: 40 - 49

Grand Masters: 50 - 59

Veterans: 60 - 69

Legends: 70 +