UKK Trail (Urho Kekkonen Trail)

Overview

UKK Trail (Urho Kekkonen Trail): Finland’s Longest Thru-Hike

Published 17 July 2025 Updated 5 June 2026

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HikeList Score

UKK Trail (Urho Kekkonen Trail) scored 75/100 on HikeList's trail-quality metrics.

Very Good

See score breakdownHide breakdown

Ideal length 52
Balanced challenge 80
Scenery & wildness 88
Varied terrain 94
Accommodation 67
Food & support 65
Path quality 98
Season flexibility 76

Computed from length, challenge, scenery & wildness, terrain variety, accommodation, food & support, path quality and season flexibility.

The UKK Trail, or UKK-reitti, is a hard point-to-point long-distance route across eastern Finland, running roughly 1,000 km from Koli in North Karelia to Tulppio in Lapland. A full main-line thru-hike takes about 40–45 days, though sources place the route between about 800 and 1,150 km depending on variants and unfinished sections. It suits experienced, self-sufficient hikers who can navigate poorly marked forest, bog and wilderness terrain, plan resupply carefully, and handle remote summer or early-autumn conditions.

Route Overview

The route is generally walked south to north, starting at Koli in Lieksa and ending at Tulppio in Savukoski, but it can be walked either way and is more commonly tackled in sections. It crosses North Karelia, Kainuu, North Ostrobothnia and Lapland, linking Koli National Park, North Karelia and Kainuu lake-and-forest country, Hossa, Pudasjarvi and Taivalkoski, the Oulanka / Kuusamo area, Posio and Riisitunturi, Salla National Park, Tuntsa Wilderness Area and the Lapland fells. The route also forms part of the European E6 and E10 paths. For shorter Finnish trips, compare the Hetta-Pallas Trail or lake-focused Linnansaari National Park Trail.

History of the UKK-reitti

The trail is named after Urho Kaleva Kekkonen, President of Finland from 1956 to 1982, a keen outdoorsman who walked the line of the route in 1957. The concept was a national long-distance trail spanning eastern Finland from Koli north into Lapland, later becoming Finland’s longest hiking route and part of the E6 and E10. It was never fully built or consistently maintained, with responsibility split across municipalities; today, conditions range from well-kept paths to faint blazes or map-only lines.

Notable highlights

Koli National Park: The southern gateway on Lake Pielinen, with the Ukko-Koli ridge offering a classic Finnish lake-and-forest view associated with national-romantic art.
Karhunkierros, the Bear’s Ring: This 82 km route from Hautajarvi to Ruka through Oulanka gorge country forms part of the UKK Trail, with suspension bridges, rapids and river canyons.
Salla National Park and Tuntsa Wilderness: A remote Lapland section of fells, mires and Naruskajoki river country near the Russian border, giving the route its strongest arctic-wilderness feel.
European E6 and E10 routes: The UKK Trail carries parts of both trans-European long-distance paths, connecting this Finnish route to the wider continental trail network.
Boreal taiga and Lakeland wilderness: Coniferous forest, open bogs, duckboards and countless lakes define much of the walking, shifting north into fell birch, larger mires and open fell landscapes.
Wilderness huts and everyman’s right: Open huts, lean-tos and legal wild camping make a self-supported journey possible, but do not remove the need for careful food and gear planning.

Challenges to expect

Expect a serious wilderness undertaking: extreme length, remote sections, bogs, river crossings, variable surfaces and inconsistent waymarking. Some national-park sections are well maintained, but other parts have faded paint blazes or only a line on the map, so map and GPS navigation are essential. Resupply is not guaranteed between settlements, and snow can linger into early summer or arrive early in autumn. For easier Finnish planning, see the Nuuksio National Park Trail or the Archipelago Trail.

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