Tyresö Extreme Challenge (TEC) - 50 miles

Race completed

80 km Distance

1,744 m Climbing

6.6 Grit · Hardcore

What the course asks

Climbing rate 22 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Time limit 16 hours 12:00 min/km average. Generous. Walkable throughout for most of the field. About average for a 50 mi. Measured against 455 races of the same distance. Cut-off calculator →

Field size ~22 Small. Long stretches with nobody in sight.

DUV results for the 2026 edition (50mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a rolling course. Expect fast, runnable sections where rhythm is key.

By UltraHub Expert

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for 80 km of trail with 1,744 m of ascent.

Trail Running Shoes22 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition80 km of self-supported fuelling between aid stations.
Hydration VestsPole attachment and chest-strap stability on steep ground.
Trekking Poles1,744 m of ascent to walk up.
HeadlampsA 16 h limit puts you out there after dark.

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 4.5

Salomon