* Saturday: 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.
* Sunday: 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.
* March 16: Irish Spring 5/10-K, Westminster, 9 a.m., 876-7127; Chase Your Elders 8-K, Centennial Park, Ellicott City, 9 a.m.; Shamrock Marathon/8-K, Virginia Beach.
* March 17: St. Patrick's Parade 5-K, Kielbasa 10-K, Harford Estates, 9 a.m.; Caesar Rodney half-marathon, Wilmington, Del., Springburst 8-K, Greenbelt National Park, 9 a.m.
* Future book: YMCA half-marathon, Chambersburg, Pa., March 23; No Frills Biathlon, Westminster, March 23; Baltimore Ladies Classic, March 24; Redskins Run 8-K, RFK Stadium, March 24; Oriole Advocates 8-K, April 7; Cherry Blossom 10-miler, Washington, April 7; Cherry Pit 10-miler, Annapolis, April 7; BRRC Lady 10-K, April 8; Hagerstown Suns 5-K, April 13; Allie 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; Bay Bridge Run, May 5; Nike Women's Race, Washington, May 12; Baltimore Triathlon, June 23.
* Marathons: Last Train to Boston Marathon, Baltimore (Saturday). Los Angeles, Hyannis, Mass.; Corpus Christi, Texas; Hamilton, Calif. (Sunday). Long Beach, Maui, Napa Valley, Calif. (March 10). Virginia Beach, Nashville, Big Water, Utah (March 17).