BELTSVILLE CLUB plays Sundays. 301-937-6613.
D.C. CLUB plays Thursdays at St. Alban's School, Washington. 202-776-7707.
SEAMANSHIP AND SAFETY courses with Coast Guard Auxiliary 75 start Oct. 19 at Naval Research Laboratory, Washington. 301-262-5609 or 301-773-9383.
ANNAPOLIS SAILING SCHOOL and Powerboat School offers beginning and advanced courses, and Kidship sailing courses for ages 5 to 15. 800-638-9192.
CHESAPEAKE SAILING SCHOOL has courses in Annapolis. 800-966-0032.
J WORLD has courses in Annapolis. 800-966-2038 or 410-280-2040.
MARINER SAILING SCHOOL offers courses in Alexandria. 703-768-0018.
WOMANSHIP offers courses in Annapolis. 800-342-9295.
U.S. COAST GUARD AUXILIARIES and U.S. Power Squadrons offer power and sail courses. 800-336-2628; in Virginia, 800-245-2628.
ALL AMERICAN CLUB -- Damascus. 301-253-5800.
ATLANTIC CYCLING -- 301-610-0526.
BIKE & BRUNCH -- 301-881-2453.
BIKE THE SITES -- 202-842-2453.
FREDERICKSBURG CYCLISTS -- 540-373-1451.
MID-ATLANTIC OFF-ROAD Enthusiasts -- 703-502-0359.
NATIONAL CAPITOL VELO CLUB -- 301-562-0419.
OXON HILL CLUB -- 301-567-6760.
POTOMAC PEDALERS -- 202-363-8687.
RESTON CLUB -- 703-904-0900.
SENIOR CYCLING -- 540-668-6307.
TEAM DC -- 202-882-1337.
WASHINGTON AREA BICYCLIST Association -- 202-628-2500.
WASHINGTON WOMEN OUTDOORS -- 301-864-3070.
WHOLE WHEEL VELO CLUB -- 703-426-5255.
AMERICAN U. CLUB has classes and lessons. 703-321-4922.
CAPITOL HILL CLUB meets Mondays and Saturdays. 202-543-7434.
CHEVY CHASE CLUB meets at Chevy Chase Center. 301-774-7777.
D.C. FENCERS CLUB meets at Forest Glen Fencing Center. 301-562-1990.
FAIRFAX FENCERS has lessons in Chantilly. 703-352-2642.
GEORGE MASON U. CLUB -- 703-321-4922.
GEORGE WASHINGTON U. CLUB -- 301-495-9422.
INTERNATIONAL SCHOOL of Fencing has classes in Tysons Corner. 703-781-3015.
MONTGOMERY REC CLUB meets in Rockville. 301-774-7777 or 301-217-6797.
NIH CLUB meets in Bethesda. 301-435-1214.
OAKLAWN FENCING CLUB meets in Clinton. 301-248-9035.
OLDE TOWN CLUB meets in Alexandria. 703-754-9750.
SMC CLUB meets in Silver Spring. 301-565-0665.
SOUTHERN MARYLAND club meets in Lusby. 301-863-3553 or 301-862-3279.
VIRGINIA ACADEMY OF FENCING has lessons in Springfield. 703-321-4922.
MEN'S AND COED leagues need players and teams. 703-851-3332.
ALEXANDRIA Y has classes for boys and girls. 703-549-0850.
ALL STAR RHYTHMIC club has classes and team training in McLean and Fairfax. 703-289-9418.
ARLINGTON YMCA has youth classes. 703-525-5420.
GOOD LUCK CENTER in Lanham has instruction. 301-552-1093.
NORTHERN VIRGINIA ACADEMY has classes in Sterling for children and adults. 703-430-5434 or 703-476-1916.
RHYTHMFLEX has classes and team workouts. 301-762-0286.
SAINTS CLUB has classes and team in Waldorf. 301-843-3322.
APPALACHIAN MOUNTAIN CLUB -- Tape: 202-298-1488.
CAPITAL CLUB -- Saturday, to Catoctin Trail ($18); 703-765-5066. Bus for most trips leaves 16th and I NW at 8 a.m. with suburban stops.
CENTER CLUB -- Saturday, to George Washington Forest; 703-517-3490. Saturday, to Wheaton Regional Park; 301-434-7266. Sunday, to Wolf Rock; 301-294-0132.
MOUNTAIN CLUB OF MARYLAND -- Saturday, to Massanutten Mountains; 410-889-8225. Sunday, to Gunpowder Falls State Park; 410-337-6713. Wednesday, to Cedarville State Forest; 410-992-5707.
NORTHERN VIRGINIA CLUB -- Saturday, to Mary's Rock, the Pinnacle and Stony Man. Saturday, to Great Falls Park. Sunday, to Lake Accotink. Sunday to Gunpowder Falls. Activities tape: 703-440-1805.
POTOMAC APPALACHIAN TRAIL CLUB -- Tape: 703-242-0965.
SIERRA CLUB -- Activities tape: 202-547-2326.
WANDERBIRDS -- Sunday, to Brown Mountain ($18); 703-448-0140. Bus for most trips leaves 17th and K at 8 a.m. with suburban stops.
ARROWHEAD EQUESTRIAN Center has lessons for children and adults near Manassas. 703-594-3512.
BROAD RUN RIDING SCHOOL in Midland has lessons for children and adults. 540-439-9586.
BUCK VALLEY RANCH -- Trail rides near Cumberland. 717-294-3759.
CLAY HILL STABLES has classes in Landover. 301-773-0444.
ELK MOUNTAIN TRAILS has guided rides near Harpers Ferry. 301-986-8483 or 301-834-8882.
EQUILIBRIUM HORSE CENTER has instruction in Gambrills, Md. 410-721-0885.
EQUESTRIAN ENTERPRISES has weekday trail rides and Saturday instruction in Great Falls, Va. 703-759-2474.
FORT VALLEY STABLES has trail rides in Massanutten Mountains. 888-754-5771 or 540-933-6633.
FOXCHASE FARM has riding lessons and introduction to fox hunting in Middleburg. 540-687-5255.
GREENWAY STABLES offers unguided trail rides near Dulles Airport. 703-327-6117.
HARMON'S HAYRIDES -- Horse-drawn wagon rides near Brandy Station. 540-825-6707.
HIGHLANDER HORSES has trail rides in Shenandoah Valley. 540-636-4523.
HUNTER EQUESTRIAN CENTER offers riding lessons in Clinton. 301-292-9006.
LOFTMAR STABLES has hunter seat lessons in Bowie. 301-249-7893.
MARRIOTT RANCH -- Trail rides in the Blue Ridge Mountains. 540-364-2627.
MEADOWBROOK STABLES has lessons for children and adults in Chevy Chase. 301-589-9026.
MERRYMOUNT EQUESTRIAN CENTER -- Classes for children and adults in Upper Marlboro. 301-868-2109.
MOUNTAIN SPRING STABLE has trail rides in Blue Ridge Mountains. 703-987-9545.
MOUNTAINTOP RANCH has trail rides in the Shenandoah Valley and Blue Ridge Mountains. 540-298-9542.
PISCATAWAY STABLE has trail rides and hayrides in Clinton. 301-297-9808.
POTOMAC GLEN RIDING School has lessons for children and adults near Germantown. 301-601-0622.
POTOMAC HORSE CENTER offers lessons in Gaithersburg. 301-208-0200.
RIVER BOTTOM TRAIL RIDERS has trail rides in Patuxent River State Forest. 301-253-0999.
ROCK CREEK PARK HORSE CENTER has classes and rides in Northwest Washington. 202-362-0117.
RODES FARM has trail rides, lesson and pony rides in Blue Ridge Mountains. 804-325-8260.
TAMARACK STABLES has lessons and trail rides in Goldvein, Va. 703-752-7367.
TARTAN FARMS has lessons in Poolesville. 301-972-8567.
WATER'S GIFT EQUESTRIAN Center has English riding lessons in Burtonsville. 301-421-0380.
WHEATON PARK STABLES offers classes for children and adults, and Sunday trail rides. 301-622-2424.
WOODLAWN STABLES has lessons in Alexandria. 703-780-4344.
MOTORCYCLE SAFETY FOUNDATION offers beginner and advanced rider courses. 800-833-3995 or 800-446-9227.
QUANTICO CLUB event, Sunday at Bowie State U.; start noon to 2. 703-528-4636.
WASHINGTON AREA ROLLERSKATERS has clinics and group skates. 202-466-5005.
VAN METRE 5-MILE -- Saturday at 8:30 in Ashburn, for Children's Hospital. 301-871-0400.
COLLEGE BOUND 5K -- Saturday at 9 in Laurel. 301-490-0911.
SOMERSET ELEMENTARY 8K/2K -- Sunday in Chevy Chase. 301-871-0400.
PUMPKIN RUN 5K -- Sunday at 8 in Olney. 301-774-0625.
CONQUERING CF 5K -- Sunday at 2 at Poor House Farm, Martinsburg, W.Va., for the Cystic Fibrosis Foundation. 304-262-9793.
EBENEZER A.M.E. CHURCH 5K -- Oct. 16 at 8 in Watkins Park, Upper Marlboro. 301-749-8290.
DCRRC PREDICTED TIME 5-MILE -- Oct. 16 at 9 at Fletcher's Boathouse. 703-241-0395.
MENTAL HEALTH RUN 5K/2MILE -- Oct. 16 at 9 in Rock Creek Park. 703-920-5193.
BROWNE ACADEMY 3K -- Oct. 16 at 10:30 in Alexandria. 703-960-3000.
DCRRC REDISCOVERY 10K -- Oct. 17 at 8 in West Potomac Park. 301-299-2170.
MCRRC ROCKVILLE 10K/5K -- Oct. 17 at 8:30 at King Farm, Rockville. 301-353-0200.
END COLON CANCER 5K -- Oct. 17 at 2 at Seventh and Pennsylvania NW, for the Colorectal Cancer Network. 301-879-1500.
DCRRC TIDAL BASIN 3K -- Oct. 20 at noon at Jefferson Memorial. 703-241-0395.
SELF-TRANSCENDENCE 2-MILE -- Oct. 23 at 8 in Rock Creek Park. 202-363-4797.
MAKE A DIFFERENCE 5K -- Oct. 23 at 8 at Tucker Road Community Center, Fort Washington. 301-203-6000.
CRIME VICTIMS FUND 5K/1-MILE -- Oct. 23 at 9 at Watkins Park, Upper Marlboro. 301-952-3801.
MCRRC CANDY CANE 8K -- Oct. 23 at 9 in Chevy Chase. 301-353-0200.
POUND/PEDAL PANT DUATHLON -- Oct. 24 at 7:30 in Hartwood, Va.; 3-mile run, 17-mile bike, 3-mile run. 540-775-4952.
TRICK OR TROT 5K -- Oct. 24 at 8:30 at Arlington YMCA. 703-525-5420.
GOBLIN GALLOP 5K -- Oct. 31 at 9 at Fair Lakes Shopping Center; 1K at 8:30. A benefit for the John Quadrino Foundation for Children With Cancer. 703-536-2027.
MONTGOMERY MEN'S 55+ team needs players. 301-530-8790.
INNER QUEST offers frequent classes in kayaking, canoeing, rock climbing and caving. 703-478-1078.
VENTURE EXERCISE for blind and disabled athletes, Saturdays at D.C. YMCA. 301-248-2681.
WASHINGTON WOMEN OUTDOORS offers cycling, hiking, rock climbing, canoeing and kayaking trips and instruction. 301-864-3070.