COASTAL NAVIGATION course with Coast Guard Auxiliary 7-10 starts Sept. 20 in Gaithersburg. 301-424-5572.
BOATING SAFETY course with Coast Guard Auxiliary 02-01 starts Sept. 21 in Alexandria. 202-547-8558.
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.
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.
BENEFIT TOURNAMENT -- Sept. 16 at P.B. Dye Club, Ijamsville, for Mercy Health Clinic and Carl Nordberg Pharmacy Program. 301-469-8949.
ADVENTURING -- Saturday, to Washington Monument State Park. 202-462-0535.
APPALACHIAN MOUNTAIN CLUB -- Tape: 202-298-1488.
CAPITAL CLUB -- Saturday, to Signal Knob ($23); 301-530-8633 or 301-230-9203. Bus for most trips leaves 16th and I NW at 8 a.m. with suburban stops.
CENTER CLUB -- Friday, to Vienna; 703-525-3357. Saturday, to South River Falls; 703-451-1341. Saturday, in Arlington; 703-243-0179. Sunday, to White Oak Canyon; 202-408-0814.
MOUNTAIN CLUB OF MARYLAND -- Saturday, to Signal Knob; 410-889-8225. Saturday, to Gettysburg; 717-267-2740.
NORTHERN VIRGINIA CLUB -- Saturday, to Bull Run Marina. Saturday, in Rock Creek Park. Sunday, to Big Schloss. Activities tape: 703-440-1805.
POTOMAC APPALACHIAN TRAIL CLUB -- Tape: 703-242-0965.
SIERRA CLUB -- Saturday, to Great North Mountain. Sunday, to Seneca Creek State Park. Sept. 13, to Massanutten. Activities tape: 202-547-2326.
WANDERBIRDS -- Sunday, to Cunningham Falls, with swimming. $18. 703-660-2342. 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.
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.
HYAN FORGE RIDING SCHOOL has classes and camps for ages 5 and up in Crownsville. 410-923-8808.
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 hay rides 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.
ROCKING S RANCH has trail rides and lessons in Winchester. 540-678-8501.
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.
BENEFIT RIDE -- Saturday at 9:30, starting from 13135 Lee Jackson Hwy., Fairfax; register at 8. $15, for Children's Miracle Network. 703-967-8842.
MOTORCYCLE SAFETY FOUNDATION offers beginner and advanced rider courses. 800-833-3995 or 800-446-9227.
NATIONAL PRESS CLUB 5K -- Saturday at 9 in Washington. 202-662-7516.
POOLESVILLE DAY 5K -- Saturday at 8 in Poolesville. 301-349-5753.
FAIR LAKES 8K/2K -- Sunday at 8:30 in Fairfax. 703-631-7571.
MCRRC CABIN JOHN KIDS RUN -- Sunday at 9 at Cabin John Park, for ages 18 and younger. 301-353-0200.
BENEFIT WALK -- Sunday at 9 at Greenbelt Lake, for SIDS programs. 301-322-2620 or 877-935-6839.
VOLKSMARCH 10K WALKS -- Sunday at Bladensburg Waterfront Park; start 9 to noon. 301-572-5574 or 410-437-2164.
KENSINGTON 8K/2-MILE/1-MILE -- Sept. 17 at 7:45 at Kensington Town Hall. 301-564-1316.
TERRY FOX 5K -- Sept. 17 at 8 at Four Seasons Hotel, Washington. 202-944-9163.
SUPER H 5K -- Sept. 17 at 8 in McLean. 202-877-1781.
BLUEMONT FAIR 10K -- Sept. 17 at 8 in Loudoun County. 703-771-0070.
ROCKS INC. 5-MILE-2-MILE -- Sept. 17 at 8:30 in Burke Lake Park. 877-762-5732.
MCRRC LAKE NEEDWOOD 10K -- Sept. 24 at 8:30 in Derwood. 301-353-0200.
NAVY FEDERAL 5K -- Sept. 24 at 9 in Vienna. 703-206-4362.
ZACK'S 5K/1-MILE -- Sept. 25 at 9 in College Park. 301-871-0400.
WASHINGTON AREA ROADSKATERS has training and group skates in Washington. 202-249-2228.
MONTGOMERY 30+ team needs goalie. 301-726-5642.
VIRGINIA AND D.C. leagues need players and teams. 703-851-3332.
MONTGOMERY MEN'S 45+ team needs players. 301-922-1816.
NORTHERN VIRGINIA league needs one team, and club needs new players. 703-620-5425.
MONTGOMERY WOMEN'S 30+ team needs goalie. 301-217-0028.
MONTGOMERY WOMEN'S 30+ team needs experienced players. 301-871-2702.
ALEXANDRIA/SPRINGFIELD adult leagues need players and teams. 703-851-3332.
NORTHERN VIRGINIA SENIOR league needs men 50+ and women 40+ for Tuesday and Thursday morning play. 703-913-0028 or 703-524-5576.
ARLINGTON COED team needs male and female players for Saturday games. 703-499-3816.
MARYLAND TABLE TENNIS Center has daily play in Gaithersburg. 301-519-8580.
DC VOLLEYBALL has adult leagues. 202-857-0700.
FAIRFAX JUNIORS has youth clinics in Fairfax County. 703-476-1017.
MID-ATLANTIC Volleyball has clinics and tournaments. 301-972-3611.
USA VOLLEYBALL Chesapeake Region has information about leagues, clinics, camps and tournaments. 301-270-0710.
VOLLEYBALL HOUSE in Elkridge has leagues and clinics. 410-579-1007.
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.