Lake Ukiel (Krzywe)

Lake Ukiel (pronounced "OO-kyel"), known locally as Krzywe ("the crooked lake"), is the largest lake inside the city of Olsztyn and its favorite summer playground. Covering more than 400 hectares (about 1,000 acres) and reaching 43 meters deep, it is ringed by wooded, steep shores, yet it lies only a short bus ride from downtown. With a city beach, sailing and canoe bases and lakeside trails, it is the easiest way to experience Poland's Masurian lake country without leaving town.

Lake Ukiel at a glance

• Area: 412 ha, Olsztyn's largest lake,
• maximum depth: 43 m (141 ft), average about 10.6 m,
• length: 5.3 km (3.3 mi), up to 1.9 km wide,
• shoreline: about 22.5 km (14 mi).

The lake sits in the northwest of Olsztyn, between the Dajtki, Gutkowo and Likusy neighborhoods. It is made up of four connected basins, which explains its winding shape. Its water drains through a small stream and Lake Kortowskie into the Łyna River. Olsztyn itself counts around a dozen lakes within city limits, which is unusual for a city of its size.

The city beach and Ukiel sports center

The main hub is the City Beach (Plaża Miejska) on Kapitańska Street, part of the Ukiel Recreation and Sports Center run by the city's sports authority (OSiR). The complex includes a guarded swimming area, a sailing center (including iceboating) and the Olsztyn canoe center. In summer you will find piers, a boat rental and beach volleyball courts.

In 2026 the rental operated from May 1 to October 4. Outside the season the beach is open for walks, but there are no lifeguards or rentals. Swim only at the guarded beach in season: there have been drownings on unguarded stretches, and in hot summers swimming is sometimes suspended because of algae blooms. OSiR posts current notices (in Polish).

Things to do at Lake Ukiel

• Walk or cycle around the lake: the full loop is more than 20 km on hilly forest paths; for a shorter stroll, start at the City Beach,
• sailing, kayaking and paddleboarding in season,
• sunsets over the wooded far shore, best from the beach,
• Copernicus Bay (Zatoka Kopernika), a marina with photogenic sailboats.

Allow 1–2 hours for the beach area, half a day for a bike loop.

Is it worth visiting off-season?

Yes, for quiet walks and runs; autumn is especially peaceful. In winter the sailing season is over. Even if the lake freezes, do not walk on the ice except at organized, supervised events, and expect icy forest paths.

How to get there

Olsztyn is about 210 km (130 mi) north of Warsaw, around 2.5–3 hours by direct train; Olsztyn-Mazury Airport in Szymany is roughly an hour's drive. The City Beach is about 2 km (1.2 mi) west of the Old Town as the crow flies. City buses stop at "Plaża Miejska" on Kapitańska Street (check the local ZDZiT timetable); there are parking lots by the beach that fill up on summer weekends. Bike paths connect the lake with downtown. Rentals are paid in Polish złoty (PLN).

Nearby

On the opposite, northern side of the city lies the Olsztyn City Forest with the Łyna River valley. Downtown, don't miss the High Gate, the Old Town and the outside of the Warmian Chapter Castle, closed for restoration since September 2026.