California Ironman Triathlon—March 31. Featuring a 1.2-mile swim, 56-mile bike ride and 13.1-mile run. Oceanside Harbor, 1540 Harbor Drive N., Oceanside, 888.280.9097, ext. 27. Map S22

San Diego Crew Classic 34th Regatta—March 31-April 1. University rowing clubs from across the country compete. Crown Point Shores and Lamont Street, Crown Point, 619.225.0300. Map I8

San Diego Shockwave—Indoor Football. March 31: City of Industry; April 14: San Bernadino; April 21: Casper; May 5: L.A. Cox Arena at SDSU, 5500 Campanile Drive, College Area. 877.746.2928. Map E3

San Diego Padres—Major League Baseball. April 6–8: Colorado; April 9–11: San Francisco.; April 18–19: Arizona; April 27-29: L.A. Dodgers; April 30-May 2: Nationals; May 11–13: St. Louis; May 14–16: Cincinnati; May 22–24: Chicago Cubs; May 25–27: Milwaukee; PETCO Park, 100 Park Blvd., downtown, 619.795.5000. Map Q16

62nd Annual Del Mar National Horse Show—April 19–May 6. Prestigious equestrian event includes international championship riders, dressage and Western hunter-jumper competitions. Del Mar Fairgrounds, 2260 Jimmy Durante Blvd., Del Mar, 858.792.4288. Map X22

26th Annual La Jolla Half Marathon—April 22. Begins at Del Mar Fairgrounds and ends at La Jolla Cove, 2260 Jimmy Durante Blvd., Del Mar, 858.454.0777. Map X22

Stan Humphries Celebrity Golf Classic—April 26-29. Drew Brees, Adrian Young, Ray Romano and more play ninth annual charity golf event. Morgan Run Resort, 5690 Cancha De Golf, Rancho Santa Fe, 858.836.0133. Map W23