Maglesø Circular – Yellow Route

A Lake Trail Through Zealand's Alps

Maglesø sits in a glacial basin surrounded by some of the steepest hills on Zealand. The 7-kilometre loop trail — the yellow route — circles the lake through dense beech forest, across ridgelines and down into hollows carved by meltwater thousands of years ago. The area around Tølløse is sometimes called the Zealandic Alps, and while the name carries a hint of local humour, the terrain genuinely surprises hikers who expect the island to be flat. Elevation changes of 40 to 50 metres within short stretches make this walk more physically engaging than most routes in the region.

The Lake and Its Surroundings

Maglesø is a clear, spring-fed lake roughly 800 metres long. Its banks drop steeply on the western side, where beech trees lean out over the water and roots grip exposed rock. On calmer days the surface reflects the canopy so perfectly that the shoreline seems to double. The eastern shore is gentler, with a few grassy clearings that invite a rest. Bird life is varied — great crested grebes, grey herons and kingfishers are regularly spotted along the reed edges, and in late spring the surrounding forest fills with the sound of blackcaps and wood warblers.

Forest Trails and Hilly Terrain

The yellow route follows forest roads and narrow paths that wind through Skovkirkegården and the woodland north of the lake. Several sections run along ridges with filtered views through the canopy, while others descend into shaded valleys where ferns carpet the forest floor. In spring the ground beneath the beeches turns white with wood anemones before the leaf canopy closes. Autumn brings rich copper and amber tones that make the route especially photogenic. The trail surface is mostly packed earth and forest floor — sturdy footwear is recommended, particularly after rain when slopes become slippery.

Brorfelde and the Observatory Connection

The trailhead at Maglesøvej is shared with longer routes that continue toward Brorfelde Observatorium, the former astronomical research station perched on one of Zealand's highest points. While the yellow route stays close to the lake, ambitious walkers can extend their outing by linking up with the 15-kilometre Maglesø–Brorfelde trail, which crosses open farmland and climbs to panoramic viewpoints above the surrounding landscape. Brorfelde itself has been transformed into a nature and science centre, making it a worthwhile detour for families.

Getting There and Practical Details

The starting point is on Maglesøvej near Tølløse, about 15 minutes by car from Holbæk town centre. Tølløse railway station, on the Holbæk–Slagelse line, is roughly four kilometres from the trailhead — a manageable bike ride or walk along quiet country roads. Parking is available at the small lay-by where the trail begins. The route is well marked with yellow paint blazes on trees and posts. Most hikers complete the loop in around two hours at a relaxed pace, though stopping to take in the lake views will likely stretch that.

Experiences in the Area

The countryside around Tølløse and Holbæk offers plenty beyond the trail itself. The Naturpark Åmosen wetlands lie a short drive to the southwest, with boardwalks and bird hides stretching across one of Northern Europe's largest raised bogs. Holbæk town has a charming harbour area and a museum quarter with half-timbered merchants' houses. Cycling routes connect many of the smaller villages, and farm shops selling seasonal produce dot the roadsides throughout the area. For more inspiration on what to see and do across the region, visit destinationsjaelland.dk.