Lemmenlaakso Nature Trail is about 5.7 km of hiking along the Keravanjoki river in Järvenpää, Uusimaa, through one of the municipality’s showcase conservation forests. For nesting-season rules, firewood, the gate key for the accessible sand-road approach, and the reserve’s management plan, start with the City of Järven...
Paint marks on tree trunks in the core zone; general trail posts elsewhere.
Route Signs
Dogs (On Leash)
Dogs
Open / Good Condition
Open / Good Condition
Hike / Walk
Activity
5.7 km
Distance
Allow about two to three hours on foot for the full distance, or shorter if you only walk the main riverside section described at roughly 2.5 km one way.
Est. Time
Forest soil paths, duckboards, and wooden stairs on steep slopes beside the Keravanjoki; sections can be narrow, muddy after rain, and rooty.
Surface
Single Track
Route Type
Light Traffic
Traffic
2010, 2011, 2012
Renovation years
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Our data was researched from Järvenpää, and other trusted sources, in March 2026. Our route / place GPX data comes from Metsähallitus / Lipas, last updated March 2026. Always check their official website for safety-critical updates.