Koster Trail 15K

15K·Strömstad, Sweden
technicaltrailcoastal
Distance15K
Date9 May 2026
FeeSEK 1,250
Difficulty4/5

About This Race

The 15K route follows the coastline around much of Nordkoster, featuring technically demanding sections across granite cliffs and stones. Two aid stations provide hydration support along the scenic island loop that showcases multiple viewpoints across the archipelago.

The 15K route follows the coastline around much of Nordkoster, featuring technically demanding sections across granite cliffs and stones. Two aid stations provide hydration support along the scenic island loop that showcases multiple viewpoints across the archipelago.

Practical Info

Accommodation

Multiple accommodation options available on Koster islands or in Strömstad. Ferry transportation required from Strömstad Norra hamnen to reach the island start location.

Required Gear
  • accident and liability insurance

Best For

experienced trail runnerscoastal trail enthusiasts

Notable Features

Limited to 200 participants, the race takes place entirely within Sweden's only marine national park, featuring technical granite cliff sections, coastal views, and post-race dining at the country's westernmost restaurant.