- Elevation, modelled
- 51 m
- Tallest summit within 25 miles
- Sugarloaf Mountain387 m · 17.9 mi
- Nearest byway
- Chesapeake and Ohio Canal Byway0.3 mi off
- Sunset, June solstice
- 20:39local time
- Coordinates
- 39.0311, -77.2442
Lock 21 “Swains” Campground is a park in Maryland, at a modelled 51 m. Sugarloaf Mountain stands 387 m to the north-northwest, 18 miles off. The nearest named place is Lock 21: Swains Lock, a attraction less than a tenth of a mile away. Chesapeake and Ohio Canal Byway passes 0.3 miles off. 53 named summits stand within 25 miles.
- Operated by
- National Park Service
- Access
- Yes
- Fee
- No
Summits around it
The highest named summits within 25 miles of Lock 21 “Swains” Campground. Elevation from each summit’s own record; bearing measured between the two coordinates.
| Summit | Bearing | Elevation | Distance |
|---|---|---|---|
| Sugarloaf Mountain | NNW 334° | 387 m | 17.9 mi |
| Waterford Peak | WNW 301° | 361 m | 20.6 mi |
| Pine Rock | NW 322° | 346 m | 24.9 mi |
| Bald Mountain | NW 307° | 235 m | 21.7 mi |
| Hogback Mountain | WNW 283° | 187 m | 20.0 mi |
| Steptoe Hill | W 271° | 176 m | 23.3 mi |
| Hunting Hill | NNE 34° | 156 m | 4.5 mi |
| Gantt Hill | S 175° | 156 m | 7.3 mi |
- 0.3 mi off the Chesapeake and Ohio Canal Byway
- 3.2 mi off the Old Georgetown Pike
- 5.7 mi off the George Washington Memorial ParkwayNational
- 12.2 mi off the Antietam Campaign Byway
Overlooks nearby
Named places within 25 miles
Attractions
- Lock 21: Swains Lock: 0.0 mi
- Riverbend Park Nature Center: 0.7 mi
- Lock 20: 2.1 mi
- Lock 19: 2.3 mi
- Lock 18: 2.3 mi
Artworks
Parks
Museums
- Glenstone Museum: 1.9 mi
- Colvin Run General Store: 5.0 mi
- Blacksmith Shop: 5.0 mi
- Colvin Run Mill House: 5.0 mi
- Colvin Run Mill: 5.1 mi
Historic sites
- Mather Gorge: 2.7 mi
- Mather Gorge marker: 2.7 mi
- Ruins of Worker's Houses for Nearby Quarries: 4.8 mi
- Burling Defenders: 5.1 mi
- The River of Blood: 5.4 mi
Nature reserves
Picnic sites
- Carderock, Chesapeake & Ohio National Historic Park: 4.7 mi
- Picnic area A: 5.9 mi
- Picnic area B: 5.9 mi
- Picnic area C: 6.0 mi
- Picnic area D: 6.0 mi
Gardens
- Community Garden: 5.3 mi
- Fred Packard Grove: 6.6 mi
- Children’s Garden and Pavillion: 6.7 mi
- White Garden: 6.7 mi
- Terrace Garden: 6.8 mi
Peaks: 53
- Prospect Hill: 4.4 mi
- Hunting Hill: 4.5 mi
- Gantt Hill: 7.3 mi
- Freedom Hill: 7.5 mi
- Nokes Hill: 8.5 mi
Springs: 6
- Clean Drinking Manor Spring: 9.9 mi
- Silver Spring: 11.9 mi
- Takoma Spring: 13.4 mi
- Sandy Spring: 14.2 mi
- Indian Springs: 18.9 mi
Waterfalls: 5
- Great Falls: 2.4 mi
- Scott's Run Falls: 4.9 mi
- Stubblefield Falls: 5.0 mi
- Brambleton Sign/Water Decoration: 15.6 mi
- Coe Creek: 21.9 mi
Beaches: 4
- Sycamore Beach: 3.4 mi
- Purplehorse Beach: 3.4 mi
- Fishing Shore: 11.5 mi
- Lake Barcroft Beach: 13.7 mi
Cliffs: 4
- Quartz Rock Outcropping: 15.3 mi
- Quartz Rock Outcropping: 15.3 mi
- Rosier Bluff: 21.2 mi
- Indian Queen Bluff: 22.5 mi
Rest areas: 3
- Manassas Safety/Rest Area West: 20.4 mi
- Manassas Safety/Rest Area East: 20.5 mi
- Truck Rest Area: 23.3 mi
| Date | Sunrise | Golden hour | Sunset |
|---|---|---|---|
| March equinox | 07:13 | 18:46 | 19:21 |
| June solstice | 05:44 | 19:59 | 20:39 |
| September equinox | 06:57 | 18:33 | 19:08 |
| December solstice | 07:25 | 16:08 | 16:50 |
Local time (America/New_York).
Day trips start here
- Potomac · 2 mi
- Great Falls · 3 mi
- Rockville · 6 mi
- Gaithersburg · 7 mi
- Bethesda · 8 mi
- McLean · 8 mi
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