Tuusula Biking Trails

Vierumäen XCO-rata is a cross-country Olympic style mountain-bike loop in Vantaa’s Vierumäki outdoor block on the capital-region fringe, maintained by Korson Kaiku mountain bikers on city-leased land(1). The mapped line is about 3.3 km as one full lap; club materials sometimes describe the same circuit nearer to 4 km because of event layouts or rounding. Planning began in autumn 2012 and construction with initial marking finished in summer 2013; sign graphics were developed together with Metropolia University of Applied Sciences, while the club still asks the city for permanent posted guidance(1). From 2021 onward part of the line crosses a nature reserve: you must stay on the marked XCO line and not shortcut onto other paths so the track can remain open(1). The route starts from the Vierumäki recreation parking at Huuhkajatie 1, 01450 Vantaa. Beside the lit fitness-trail side of the lot, an information board shows the course map(1), matching the service point the City of Vantaa lists for the 2.8 km fitness trail at the same address(2). Early metres brush the Vierumäki school’s outdoor sports cluster before the line dives into pine forest paths. The circuit adds purpose-built features—banked berms, log rides, rock gardens and modest drops—with easier ride-arounds on the hardest tricks(1). For atmosphere on damp rock and root, Jaakko MTB’s write-up of a Korson Kaiku weekend here explains how quickly grip changes after rain(4). The same Huuhkajatie parking is the free, time-unlimited Korso MTB event trailhead in MTBreitti’s KORSO write-up(3), so drivers and riders often share this hub. You can pair laps with Vierumäen kuntorata 2,8km, valaistu for a running or walking warm-down or with Vierumäen hiihtolatu 2,8km when winter tracks are groomed; both connect on the shared outdoor corridor near Vierumäen kuntoradan ulkokuntoilupaikka. Korson Kaiku carries accident insurance for the XCO line, reports vandalism to the police when needed, and welcomes damage reports by email through club channels(1).