CYCLING July 10 to 13: The Greatest Bicycle Tour of the Historic C&O Canal. This is a 200-mile trek along the C&O Canal, with no hills and no cars. Organizers promise lots of support and food, and participants can ride at their own pace. Info: tgbt.org.

July 17: Total 200, Washington to Point Lookout, 5 a.m. This is a fully supported bike ride from Washington to Point Lookout State Park in southern Maryland and back. Suggested pace is 18 to 22 mph. Info: total200.com.

RUNNING

July 9: Midsummer Night's Mile, Rockville, 7 p.m. This 2-mile race is run on Rockville High School's track, in heats. Info: mcrrc.org.

July 11: Caribbean Sounds 8k Run & 5k Walk, Rock Creek Park, 7:30 a.m. The run through Rock Creek Park is a fundraiser for sarcoidosis research. Info: caribbeansoundsrace.com.

July 17: Rockville Rotary Twilight 8k, Rockville, 8:45 p.m. This is a very popular 8k run through the streets of downtown Rockville, with a post-race party. Info: mcrrc.org.

SWIMMING

July 10: Swim for Life, Chesterstown, Md., 8:30 a.m. This open-water race lets swimmers choose among 1-, 2-, 3-, 4- and 5-mile swims in the Chester River on the Eastern Shore. It is a fundraiser for Pediatric AIDS, the Chester River Association and other charities. Info: swimdcac.org.

TRIATHLON

July 11: The 14.06 Triathlon, Manassas, 7:30 a.m. The mini-triathlon includes a 425-yard pool swim (17 lengths), 11.2-mile bike ride and 2.6-mile run. Info: triitnow.com.

TRACK & FIELD

July 10: Track and Field Meet, Falls Church, 8:30 a.m.

This meet, open to all, includes a variety of races on the track, relays, shot put, long jump, hurdles, racewalking and other events. Info: pvtc.org.

URBAN CHALLENGE

July 17: Metro Dash, Nationals Stadium, noon. Competitors run through the streets of D.C. in search of scattered physical challenge points, power through interval workouts and take on an extreme urban obstacle course. Info: metrodash.com.