When is C&O Canal Lock 15 open?
Open 24 hours, every day. Hours checked on 4 November 2026.
52° · Clear nowBest time: 8 amThings to do in Reston
LandmarkPotomac Ridge
C&O Canal Lock 15
- 4.660 reviews
- Free
- Open now
Historic lock on the C&O Canal towpath in Potomac, MD, reached by walking or biking the canal path.
Quick answers
C&O Canal Lock 15 in short
When is the best time to visit C&O Canal Lock 15?
It's at its best mornings and afternoons. Go in daylight. Wedar also scores every hour of the next five days against the forecast; see the best time on this page.
Is C&O Canal Lock 15 indoors or outdoors?
Outdoors: best on a dry day.
Is C&O Canal Lock 15 good for kids?
Yes, it welcomes children.
How much does C&O Canal Lock 15 cost?
It's free to visit.
Do you need to book C&O Canal Lock 15?
No, you can walk in.
More questions (2)Fewer questions
How long do you need at C&O Canal Lock 15?
About 45 minutes.
Where is C&O Canal Lock 15?
Lock 15, Potomac, MD 20854.
Status, rating and hours checked on 4 November 2026; kids, cost, booking and setting verified by the Wedar team. Where our data comes from
Right now · 7:15 am
Why it fits right now
A great call right now.
Nearly as good as its best, 8 am.
In its favour
- Golden hour
- Best in the morning
- Outdoors
Worth knowing
- Feels 48° out there
52°
Clear
- Feels
- 48°
- Rain
- 0%
- Wind
- 6mph
- 8am
55° - 9am60°
- 10am
64°
The next five days
Best time to go
Scored on the forecast, its opening hours and when it's at its best. Tap a time to see it.
9a9 am12pNoon3p3 pm6p6 pm9p9 pm
TodayToday
TmrwTomorrow
FriFriday
SatSaturday
SunSunday
Before you go
Plan your visit
Hours
Open now- monday
- Open 24 hours
- tuesday
- Open 24 hours
- wednesdayToday
- Open 24 hours
- thursday
- Open 24 hours
- friday
- Open 24 hours
- saturday
- Open 24 hours
- sunday
- Open 24 hours
Hours checked 4 Nov
Where and how
- 1 C&O Canal Lock 15
- 2 Billy Goat Trail Section A Entrance · 8 min
- 3 Great Falls Overlook Trailhead · 14 min
- 4 Olmsted Island Overlook · 17 min
- 5 Great Falls Park · 19 min
Good to know
- Outdoors
- Free to visit
- Walk-ins welcome
- Allow about 45 min
- A walk
From visitors and the venue
What it's like
4.6from 60 reviews
Known for
- Historic canal lock
- Towpath walking
What people say
- People like:
- Scenic trail and walks
Around Potomac Ridge
Nearby
Within about a 15-minute walk.
Good nowBilly Goat Trail Section A EntranceTrail · 8 min walk
Great Falls Overlook TrailheadTrail · 14 min walk
Olmsted Island OverlookViewpoint · 17 min walk
Great Falls ParkPark · 19 min walk
On nearby
For the next three hours
What to wear to go there now
Jacket until 9 am. Light layer from 9 am.
JacketUntil 9 am
Light layerFrom 9 am