* Tonight: WRRC Twilight Series 3-miler, 7 p.m., 348-7509.
* Saturday: Place for Your Pace, Loch Raven, 8 a.m.; Crofton 10-K, Crofton.
* Sunday: BRRC Yankee Doodle 4-miler, Lake Montebello, 8 a.m., 566-RUN2; Tri-State Track Meet, South Hagerstown High.
* July 4: Arbutus Firecracker 10-K, Arbutus, 8 a.m., 242-0809; Firecracker 5-K, Kingsville, 8 a.m., 592-6616; Dundalk Heritage 6-K, Dundalk, 7:30 a.m., 494-8649; Frederick's Fourth 5-K, 7 p.m., 371-9562; Choptank River Run, Cambridge, 7:30 p.m., 228-4211.
* July 5: MCRRC cross-country grand prix, Potomac, 7 p.m., 353-0200.
* July 6: Independence 4-miler, Havre de Grace, 8 a.m., 931-0096; A Place for Your Pace, Loch Raven, 8 a.m.; Chinmoy 2-miler, Patterson Park, 8 a.m., 467-3223.
* Future book: Wall track run, Annapolis, July 13; BRRC club picnic, Padonia Swim Club, July 14; Utica (N.Y.) Boilermaker 15-K, July 14. * News and notes: The only U.S. road runner making the world's top 10 rankings is Steve Spence (No. 7) . . . Runner's World magazine will gather up the top runners to celebrate its 25th anniversary at a big shindig in New York.