Online registration for the 2013 Northern Virginia Senior Olympics is open Deadline to register online is Aug. 30. The fee is $12. Participants can register online at www.nvso.us. Events take place Sept. 7-19 at 17 venues throughout Northern Virginia. Call 703-228-4721 for more.

Saturday/Sept. 7

Opening Ceremonies, Track and Rowing Events, Exhibits. 9 a.m. at Thomas Jefferson Community Center, 3501 S. 2nd St., Arlington. Free; open to the public.

Diving Competition. 3 p.m. at Yorktown High School pool, 5200 Yorktown Blvd., Arlington. Free; open to the public.

Sunday/Sept. 8

Cycling Competition. 10K, 8 a.m. and 20K, 9 a.m., at Northern Fauquier Community Park, 4155 Monroe Parkway, Marshall. Free; open to the public.

Monday/Sept. 9

Events. Team line dancing, women's eight ball pool, racquetball and ten pin bowling. Events will take place at the James Lee Community Center Theatre, Falls

Church; Wakefield District Park, Annandale; Lincolnia Senior Center, Alexandria and Bowl America Shirley, Alexandria. Open to the public; free. Call for event times, 703-228-4721.

Tuesday/Sept. 10

Senior Olympic Events. Wii bowling, eight ball pool (men), bocce, tennis (singles 50-69), horseshoes, handball, softball hit and throw, football throw and yo-yo tricks competition will take place at the Greenspring Retirement Community, Springfield; Lincolnia Senior Center, Alexandria; City of Fairfax Senior Center, Fairfax; Lincolnia Senior Center, Alexandria and Wakefield District Park, Annandale. Call for event times, 703-228-4721. Open to the public; free.

Wednesday/Sept. 11

Tennis, Mini Golf and Bunco. They will be held at Wakefield District Park, Annandale; Oak Marr Recreation Center, Oakton and Hollin Hall Senior Center, Alexandria. Call for locations and event times, 703-228-4721. Open to the public; free.

Thursday/Sept. 12

Tennis and More Events. Northern Virginia Senior Olympics events taking place include tennis (doubles all ages), table tennis, Mexican Train Dominoes and duplicate bridge. Venues include Wakefield District Park, Annandale; Goodwin House Bailey's Crossroads, Falls Church and Lincolnia Senior Center, Alexandria. Call for event times, 703-228-4721. Open to the public; free.

Friday/Sept. 13

Swimming and Doubles Tennis. Swimming events and mixed doubles tennis highlight events at the Northern Virginia Senior Olympics. Tennis will start at 10 a.m. at Wakefield District Park, Annandale and swimming at 9:30 a.m. at the Claude Moore Recreation Center, Sterling. Open to the public; free.

Saturday/Sept. 14

Volleyball and Basketball Competition. Volleyball games will be held at 9:30 a.m. at the Charles Houston Recreation Center, Alexandria. Men's and women's basketball free throw and field goals plus men's 3v3 games will be held beginning at 11 a.m. at the Thomas

Jefferson Community Center, Arlington. Open to the public; free.

Sunday/Sept. 15

Field Events. Field events including, standing and running long jump, high jump, mini javelin throw, Frisbee throw, shotput and discus start at 9 a.m. at George Mason High School, Falls Church. Badminton competition will take place at the K2 Badminton Club, Sterling. Open to the public; free. Call for event times, 703-228-4721.

Monday/Sept. 16-18

Mixed Doubles Pickleball Competition. 9 a.m. Free. Call for location, 703-228-4721.

Tuesday/Sept. 17

Doubles: Pickleball Competition. 9 a.m. Free. Call for location, 703-228-4721.

Wednesday/Sept. 18

Singles: Pickleball Competition. 9 a.m. Free. Call for location, 703-228-4721.

Thursday/Sept. 19

Golf Competition. 9 a.m. at Forest Greens Golf Course, Triangle. The final event in the Northern Virginia Senior Olympics.