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Frederick County

Dam 4 C&O – Antietam Aqueduct loop from Brunswick

Frederick County

Dam 4 C&O – Antietam Aqueduct loop from Brunswick

Hard

3.2

(28)

32

riders

Dam 4 C&O – Antietam Aqueduct loop from Brunswick

07:49

95.9km

290m

Gravel riding

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 13, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Chesapeake and Ohio Canal National Historical Park

Waypoints

A

Start point

Train Station

1

859 m

Chesapeake and Ohio Canal Trail

Highlight (Segment) • Cycleway

The Chesapeake and Ohio Canal Trail is one of the East Coast's premier bicycle pathways. It follows the abandoned Chesapeake and Ohio Canal and runs from Washington, DC, to Cumberland, Maryland.

Tip by

2

9.44 km

Staircase and bridge from trail to Harper's Ferry

Highlight • Bridge

to get from trail to Harper's Ferry, you have to go up these stairs. There are bike racks at the base, or you carry your bike up with you

Tip by

3

48.0 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

4

48.0 km

Dam 4 C&O

Highlight • Monument

Great spot to see the Dam.

Tip by

5

72.3 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

6

85.0 km

Chesapeake & Ohio Canal National Historical Park Lock 34

Highlight • Historical Site

7

86.5 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

8

87.3 km

View of Potomac River Rapids (C&O Canal Towpath)

Highlight • Viewpoint

One of my favorite rides! The trail is well maintained and smooth. So many spots to rest and take breathtaking pics

Tip by

B

95.9 km

End point

Train Station

Way Types & Surfaces

Way Types

94.9 km

746 m

371 m

< 100 m

< 100 m

Surfaces

83.5 km

12.1 km

371 m

< 100 m

< 100 m

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Elevation

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

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Weather

Powered by Foreca

Today

Friday 9 October

23°C

6°C

0 %

Additional weather tips

Max wind speed: 12.0 km/h

to get more detailed weather forecasts along your route

Comments

September 14, 2024,C&O with the Boy Scouts from Antietam to Harpers ferry

Added another 20 at the end by my self to stretch the legs

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