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Routes
United States
Maryland
Washington County

Big Slackwater – Big Slackwater View loop from Antietam National Battlefield

Routes
United States
Maryland
Washington County

Big Slackwater – Big Slackwater View loop from Antietam National Battlefield

Hard

3.4

(1)

96

riders

Big Slackwater – Big Slackwater View loop from Antietam National Battlefield

09:07

115km

510m

Gravel riding

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: March 28, 2026

Tips

Cycling is not permitted along parts of this route

After 26.5 km for 304 m

After 30.4 km for 304 m

Waypoints

A

Start point

Parking

Get Directions

1

12.2 km

Antietam Aqueduct

Highlight • Bridge

The Antietam Aqueduct, located at mile 69.4 of the C&O Canal Towpath, is a three-arch stone aqueduct that once carried the canal over Antietam Creek. Built in 1834, it is …

Tip by

2

24.9 km

Chesapeake & Ohio Canal National Historical Park Lock 34

Highlight • Historical Site

3

26.4 km

Harpers Ferry Tunnel and Railroad Bridges

Highlight • Bridge

From here, you can look up at the West Portal of the Harpers Ferry Tunnel. The tunnel is part of the B & O Railroad Potomac River Crossing, which is …

Tip by

4

69.1 km

Dam No. 4

Highlight • Monument

Dam No. 4 is located around mile 84 of the C&O Canal Towpath. Built in 1856, this dam was crucial for maintaining water levels for canal operations and remains an …

Tip by

5

69.2 km

Dam 4 C&O

Highlight • Monument

Great spot to see the Dam.

Tip by

6

73.3 km

Big Slackwater

Highlight • Cycleway

Ride in the morning or weekday, if possible. can get busy on weekends.

Tip by

7

74.2 km

Potomac River Trail

Highlight • Trail

8

74.9 km

Big Slackwater View

Highlight • Trail

Big Slackwater is a deep, smooth area of the C&O canal. It is the place that canal boats used to be launched into the canal.

After a flood destroyed the …

Tip by

B

115 km

End point

Parking

Loading

Way Types & Surfaces

Way Types

89.6 km

15.3 km

4.55 km

4.14 km

1.62 km

179 m

Surfaces

86.5 km

11.9 km

8.31 km

7.52 km

773 m

255 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (150 m)

Lowest point (80 m)

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Weather

Powered by Foreca

Today

Tuesday 21 April

17°C

-3°C

0 %

Additional weather tips

Max wind speed: 16.0 km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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