TEC – Täby Extreme Challenge is an ultra running race in the north part of Stockholm, Sweden. TEC as it’s called is arranged for the 9th time 2017 and we can offer you 50 miles both a day and a night race, 100 miles and 200 miles.
The race track is on mostly gravel and some kilometers with single track in the forrest, some asphalt occeurs. One lap is 11.5km so you will run 7, 14 or 28 depending on your choise of distance!
Organizer & Race Director