These are the age brackets that each runner can race within to compete with those in a similar age group. There is a presentation for the Age Group Winners for the Twilight 10k, Sky Run 20k, Buffalo Stampede 100k, Sky Marathon 42k, Ultra Slam, Grand Slam. Ages will be calculated by the runner’s age on the day of the Race.

Youth: 0 - 23

Open: 24 - 39

Masters: 40 - 49

50 - 59: 50 - 59

60 - 69: 60 - 69

Legends: 70 +

2k Kids Trail

Under 6: 0 - 5

Under 8: 6 - 7

Under 10: 8 - 9

Under 13: 10 - 12

5k Family Trail

Under 13: 0 - 12

Under 15: 13 - 15

Under 17: 15 - 16

Open: 17 +