LPGA Classic March 22-28. This brand-new tourney—the first on the 2010 LPGA schedule—marks the first LPGA event to be played at La Costa, whose course has a long history with men’s professional golf. La Costa Resort and Spa, 2100 Costa Del Mar Road, Carlsbad, 760.579.7365. Map V23

california ironman triathlon March 27. 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 37th regatta March 27-28. University rowing clubs from across the country compete. Crown Point Shores and Lamont Street, Crown Point, 619.225.0300. Map I8

san diego padres Major League Baseball. April 12, 14-15: Atlanta Braves; April 16-18: Arizona Diamondbacks; April 19-21: S.F. Giants; April 29-May 2: Milwaukee Brewers; May 3-5: Colorado Rockies; May 14-16: L.A. Dodgers; May 17-18: S.F. Giants; May 25-27: St. Louis Cardinals; May 28-30: Washington Nationals; May 31-June 2: N.Y. Mets. Petco Park, 100 Park Blvd., downtown, 619.795.5000. Map Q16

65th annual del mar national horse show April 22-May 9. April 22-25: Western; April 29-
May 2: Dressage; May 4-9: Hunter/Jumper. Prestigious equestrian event includes championship riders, dressage and competitions. Del Mar Fairgrounds, 2260 Jimmy Durante Blvd., Del Mar, 858.792.4288. Map X22

29th annual la jolla half marathon April 25. Begins at Del Mar Fairgrounds and ends at La Jolla Cove, 2260 Jimmy Durante Blvd., Del Mar, 858.454.0777. Map X22

drew brees CELEBRITY GOLF championship May 20-23. Athletes and entertainment stars compete in this annual charity golf event. Morgan Run Resort, 5690 Cancha De Golf, Rancho Santa Fe, 858.836.0133. Map W23