Vertical Kilometer Races in Spain 2026

The Vertical Kilometer (VK) is the purest climbing test in trail running: 1,000 metres of elevation gain packed into the shortest horizontal distance possible, typically between 3 and 5 km. It is a short but brutal race where aerobic capacity, leg strength and lactate tolerance are pushed to the limit. The best runners complete a VK in under 30 minutes, but for most it is a 40- to 60-minute fight against gravity. Spain offers spectacular VKs taking advantage of its orography: from Pyrenean slopes to the volcanic ramps of the Canary Islands. It is an ideal format as a complementary event within larger races, or as specific uphill strength training. If you want to improve your mountain performance, adding a VK to your calendar is one of the best decisions you can make.