TEC, Tyresö Extreme Challenge

The Tyresö Extreme Challenge returns for its 2027 edition, offering runners an unforgettable adventure through varied terrain and challenging conditions. The event kicks off on April 14th with the Start 200 Miles race starting at 10:00 AM, giving participants a full 54 hours to reach the finish line by Sunday afternoon at 16:00.
For those looking for more frequent opportunities to take on the course, the TEC Backyard event begins at 18:00 PM on Friday and continues with new starts every hour. Each of these shorter races covers a distance of 6.7 kilometers, providing up to 45 chances throughout the weekend to tackle this demanding route before the finish line closes on Sunday.
On Saturday morning at 10:00 AM, runners can opt for either the Start 50 Miles or the Start 100 Miles races, both offering a competitive window of 30 hours until the race concludes. These options cater to those seeking longer distances but with less time pressure compared to the full marathon-like MiniUltra event.
The final opportunity comes on Sunday morning at 8:00 AM when participants can join the MiniUltra 46km race, which challenges competitors over a distance of just under half a marathon in an intense 8-hour window until the closing ceremony.
All races share the same start and finish location near Alby Friluftsgård's outdoor gym in Tyresö. The event hub is set up with a dedicated TEC tent equipped to support runners throughout their journey, providing essential services and creating a vibrant atmosphere for competitors and spectators alike.
The Tyresö Extreme Challenge promises an exhilarating mix of endurance testing and scenic exploration across multiple race formats designed to suit various preferences and skill levels.
Participants will experience the unique blend of natural beauty and demanding challenges that make this event stand out in Sweden's running calendar.