The Lakes (Søerne): Copenhagen's Quiet Urban Waterway

What Are The Lakes?

Søerne — The Lakes — are three connected artificial lakes that trace the old western boundary of Copenhagen's historic city centre. The three bodies of water, Sankt Jørgens Sø, Peblinge Sø, and Sortedams Sø, are divided into five basins and together stretch just over 3.2 km from north to south. They average around 200 metres in width, making them wide enough to feel genuinely open, yet narrow enough that you always have the opposite bank in view.

This is not a manicured park with entrance gates and admission charges. There are no fences, no ticket booths, and no posted hours because there are none to post. The paths along the lakeshores are public right-of-way, used continuously by locals going to work, runners doing laps before breakfast, and retirees walking dogs in the late afternoon. That ordinariness is precisely what makes Søerne worth understanding before you visit.

A History Written in Water

The origins of The Lakes reach back to the 16th and 17th centuries, when the City of Copenhagen dammed several small streams along its western edge to create a defensive moat system. Water was a practical military asset: wide, open stretches of it slowed any approaching army and gave defenders time to respond. Later, as the threat of siege receded, the lakes were repurposed as Copenhagen's primary drinking water reservoir, a role they held well into the modern period.

That functional history explains the shape of the lakes today. They are long, narrow, and arranged in a near-straight line, following the old city boundary rather than any natural topography. The bridges that cross them at regular intervals, and the broad pedestrian paths running alongside, were laid out when the city expanded westward in the late 19th century and the lakes shifted from infrastructure to urban amenity. Walking the circuit today, you are following a route shaped by centuries of civic pragmatism rather than landscape design.

What the Walk Actually Looks Like

The full circuit around all three lakes covers roughly 6.3 to 6.6 km of predominantly flat path. The surface is paved for most of the route, with some gravel sections, making it accessible for pushchairs and cyclists as well as pedestrians. There are no significant hills. The paths run directly alongside the water, with benches placed at intervals, and the views across each lake are unobstructed for long stretches.

Each lake has a slightly different feel. Sankt Jørgens Sø, the southernmost basin near the Tycho Brahe Planetarium, tends to attract a denser mix of cyclists and commuters because of its proximity to the Forum Metro station. Peblinge Sø in the middle section is where you will find more benches and more people simply sitting. Sortedams Sø, at the northern end approaching Østerbrogade, is often the quietest of the three, with a slightly wider shoreline margin and more visible birdlife.

If you are planning a longer walk through the city, The Lakes connect naturally to several surrounding districts. The eastern shore runs directly alongside Indre By, while the western shore touches Nørrebro, Vesterbro, and Østerbro at various points, making Søerne a natural dividing line and crossing point between central Copenhagen and its bridge neighborhoods.

How the Experience Changes by Time of Day

Early morning is when The Lakes are closest to empty. Between 6 and 8 am on a weekday, you will share the path mainly with runners doing laps, a few dog walkers, and the occasional cyclist. The water at this hour is often very still, and in cooler months a low mist can sit on the surface, catching the early light in a way that is genuinely striking without requiring any photographic effort.

By mid-morning on a sunny day, particularly in spring and summer, the benches fill up and the paths get considerably more crowded. Lunchtime on a weekday brings office workers out from the surrounding streets. Weekend afternoons are the busiest periods overall: picnic blankets appear on the grass margins, inline skaters use the smoother sections of path, and kayakers occasionally appear on the wider parts of the water. The atmosphere is social rather than meditative at these times.

Evenings around sunset are worth planning for specifically. The long Danish summer evenings (daylight can extend past 9 pm in June) mean the light over the western shore can be exceptional around 8 to 9 pm. The crowds thin out from their afternoon peak, and the city noise drops slightly. This is the window most photographers target.

Wildlife and Ecology

Despite being an artificial urban water body, Søerne supports a notable population of waterbirds. Mute swans are the most conspicuous residents and are present year-round, frequently close enough to observe in detail from the shore. Mallards, coots, and great crested grebes are common. In winter, the lakes attract diving ducks that are rarely seen in summer, including tufted duck and occasionally greater scaup.

The lakes are not designated swimming areas. The water quality is managed for ecological purposes rather than bathing, and there are no formal facilities for entering the water for swimming. Kayaking and small non-motorised craft are permitted in sections, and in summer it is possible to rent pedal boats, but this should be verified with current local rules before attempting it.

Getting There and Getting Around

The most straightforward public transport access is Forum Metro Station on the M1/M2 lines, which places you at the southern end of the lakes near Sankt Jørgens Sø and the Tycho Brahe Planetarium. From here, you can join the lakeside path immediately and walk north along the full length if you choose. Multiple bus routes also run along the roads bordering the lakes, particularly along the eastern shore.

Copenhagen is one of the world's most cycle-friendly cities, and reaching The Lakes by bike is often the most practical option. Rental bikes are available across the city centre. For a broader look at navigating Copenhagen by two wheels, the cycling in Copenhagen guide covers routes, rental options, and rules in detail.

The Copenhagen Card covers unlimited public transport, which makes reaching the lakes from any part of the city straightforward, though the card's main value comes from its museum access rather than transit alone.

Seasonal Variations and What to Expect in Each

Spring (April to May) is arguably the most rewarding season. The trees along the paths come into leaf, migratory birds return, and the light quality improves dramatically after the grey winter months. Temperatures are cool but walkable, and crowds are lighter than in summer.

Summer (June to August) brings maximum activity. The paths are busy from morning to evening, and the grass margins become informal gathering spaces on weekends. If you want a quieter experience in summer, the early morning window before 8 am is your best option.

Autumn (September to October) is underrated. The leaf colour along the eastern bank can be striking, the summer crowds are gone, and the lake surface becomes glassy on calm days. Dress for temperatures that can drop quickly after sunset.

Winter (November to March) is cold and often damp. The lakes rarely freeze fully, but they can develop ice in severe cold spells. The walk is still accessible and can be atmospheric in clear winter light, but expect temperatures around 0 to 4°C and dress accordingly. For broader context on what Copenhagen offers in the colder months, the Copenhagen Christmas guide covers the seasonal atmosphere across the city.

Who Should Skip This Attraction

If your priority is indoor cultural experiences, ticketed attractions, or structured sightseeing, The Lakes will not compete with Copenhagen's museums and historic sites for your time. This is an outdoor urban walk, not an attraction with a defined programme. Visitors with limited mobility should note that while the paths are generally flat, some sections have uneven paving, and there are no formal accessible facilities along the route.

On a rainy day in winter, the experience is significantly less rewarding than in better weather. The paths offer no shelter, and the surrounding streetscape, while pleasant, does not compensate for the absence of the views across open water that define the appeal.