Lake Calhoun is the biggest lake in Minneapolis, Minnesota, and part of the city's Chain of Lakes. Surrounded by city park land and circled by bike and walking trails, it is popular for many outdoor activities. The lake has an area of 401 acres (1.62 km2) and a maximum depth of 87 feet (27 m). The lake is part of the Grand Rounds Scenic Byway, connecting with Lake of the Isles on the northeast, Cedar Lake on the northwest, and Lake Harriet on the south.
The trail system has a 3.4-mile (5.5 km) trail around Lake Calhoun for bicyclists and skaters and a 3.2-mile (5.1 km) trail around Lake Calhoun for pedestrians. Both of these trails connect to the larger trail system via connections to Lake of the Isles and Lake Harriet. In addition, the Midtown Greenway Trail is located just north of the lake and just north of Lake Street. The lake itself is popular for canoeing, kayaking, and windsurfing, and it has three swimming beaches. The three beaches are Calhoun North Beach on the north side of the lake, Calhoun 32nd Beach on the east side and Calhoun Thomas Beach on the south side. Surrounding park land offers parking, picnicking, volleyball, and athletic fields. It is also home of sailing, hosting the Calhoun Yacht Club, the Lake Calhoun Sailing School, as well as local high school teams and the University of St Thomas Sailing Team.
The lake contains black crappie, bluegill, bowfin, common carp, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, tiger muskellunge, walleye, white sucker, and yellow perch. In 1991 the then Minnesota state record tiger muskellunge at 33 pound 8 ounce was caught in the lake. Some fish consumption guideline restrictions have been placed on the lake's bluegill, crappie, largemouth bass, northern pike, walleye, and white sucker due to mercury and/or PFOS contamination.