* Tomorrow: USA/Mobil Indoor Track Championships, New York; BRRC Awards dinner/dance, Overlea Hall, 7 p.m., 566-RUN2.
* Saturday: Washington's Birthday 5-K, Bay Hills Center, Arnold, 10 a.m., 760-9188.
* Sunday: Annual RRCA 10-mile Challenge, Howard CC, Columbia, 8 a.m., 964-8375; Colonial half-marathon, Williamsburg, Va., 1 p.m.
* March 2: Last Train to Boston Marathon, APG, Edgewood, 11 a.m., 661-6099; Chinmoy 2-miler, Patterson Park, 8 a.m., 467-3223; Alamo Alumni Run 5-miler, West Potomac Park, Washington, 8 a.m.
* March 3: Myers Pavilion 8-K, Brooklyn, 9 a.m., 882-5455; BRRC Spring 4-miler, Goucher College, 9 a.m., 566-RUN2; HCS Winter Series, Thunder Hill Elementary, 2 p.m., 730-4499; Bethesda Chase 20-K, Bethesda-Chevy Chase High, 10 a.m.; Los Angeles Marathon.
* March 9: Snyder Memorial 5/10-K, Western Maryland College, 8 a.m., 848-0891.
* March 10: Layne half-marathon, Lake Montebello, 9 a.m., 566-RUN2; Maryvale Prep 5-K, 9 a.m., 494-8649; HCS Winter Series, Longfellow School, 2 p.m.
* Future book: Shamrock Marathon/8-K, Virginia Beach, March 16; Irish Spring 5/10-K, Westminster, March 16; St. Patrick's Parade 5-K, March 17; Caesar Rodney half-marathon, Wilmington, Del., March 17; Springburst 8-K, Greenbelt, March 17; YMCA half-marathon, Chambersburg, Pa., March 23; No Frills Biathlon, Westminster, March 23; Redskins Run 8-K, RFK Stadium, March 24; Oriole Advocates 8-K, April 7; BRRC Lady 10-K, April 8; Hagerstown Suns 5-K, April 13; Sallie Mae Cherry Blossom Chaser 10-K, Washington, April 14; Boston Marathon, April 16; Westminster Main Street Mile, April 17; Fritzbe's 10-K, Rockville, April 21; Lady White Rose 5-K, York, Pa., April 27; Clyde's American 10-K, Columbia, April 28; Reservoir 50-miler, April 28.
* Marathons: Saturday -- Death Valley, Calif.; Townsend, Tenn.; Pensacola, Fla.; Fort Worth, Texas. Sunday -- Flushing Meadow, N.Y.; Latham, N.Y.; St. Louis. March 2 -- Last Train to Boston Marathon, Baltimore. March 3 -- Los Angeles, Hyannis, Mass., Corpus Christi, Texas, Hamilton, Calif.