How far is Catonsville, MD from Potomac, MD?
The driving distance from Catonsville, MD to Potomac, MD is about 39 miles (62.7 km), with a travel time of about 00h 56m by car.
- The straight-line flight distance is about 31 miles (49.9 km).
- For a round trip, plan for roughly 01h 52m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 56m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Unincorporated area in Montgomery and Prince George's County, Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Catonsville and Potomac.
Turn-by-Turn Driving Directions
Step-by-step road directions between Catonsville and Potomac.
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1
Start on the route
11 m · 8 sec
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2
Turn left onto Frederick Road
47 m · 9 sec · Frederick Road
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3
Turn right onto Bloomsbury Avenue
1.5 km · 2 min · Bloomsbury Avenue
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4
At the end of the road, turn left onto South Rolling Road
1.4 km · 2 min · South Rolling Road
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5
Continue on South Rolling Road
1657 ft · 39 sec · South Rolling Road
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6
Turn left onto I 195 East
1.2 km · 47 sec
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7
Take the exit slight right toward I 95 South: Washington
2757 ft · 1 min
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8
Merge slight left
18.9 mi · 22 min
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9
Take the exit slight right toward I 495 West: Silver Spring, Bethesda, College Park
1 km · 1 min
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10
Keep slight right to continue on I 495 West: Silver Spring, Bethesda
1.3 km · 2 min
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11
Merge slight left onto Capital Beltway
8.5 mi · 11 min · Capital Beltway
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12
Keep slight left to continue on Capital Beltway
1.3 km · 1 min · Capital Beltway
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13
Take the exit slight right toward MD 187: Rockville, Bethesda
1179 ft · 29 sec
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14
Keep slight right to continue on MD 187 North: Old Georgetown Road, Rockville
137 m · 11 sec
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15
Turn straight onto Old Georgetown Road
3019 ft · 1 min · Old Georgetown Road
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16
Turn left onto Democracy Boulevard
4.4 mi · 8 min · Democracy Boulevard
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17
Turn left onto Falls Road
1.1 km · 1 min · Falls Road
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18
Turn left
25 m · 6 sec
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19
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Catonsville and Potomac.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 95 South
Merge slight left
18.9 mi · 00h 22m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Catonsville and Sunny near Potomac.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Catonsville to Potomac?
The road trip is about 39 miles (62.7 km) and usually takes 00h 56m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Calverton is a useful midpoint, sitting about 19.4 miles from Catonsville and 19.5 miles from Potomac.
How much longer is the road route than the straight-line distance?
The direct path is about 31 miles (49.9 km), while the road route adds roughly 8 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 4:38 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.64 one way or $11.28 round trip. Estimated CO2 is about 12.3 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Catonsville and Sunny near Potomac.
Stop Ideas Near Calverton
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
United States Capitol
D C Government
The John Wilson Building
Town Hall Liquor And Bar
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Calverton.
New Carrollton station
Rockville station
Washington Union Station
BWI Rail Station
Flight Path Map
This map shows the direct air route between Catonsville and Potomac. Straight-line distance: 30.99 mi (49.87 km).
#1 Catonsville
A city in Baltimore County, Maryland.
| Population | 41,567 |
| Coordinates | 39.2720500, -76.7319200 |
| Altitude | 146 |
| Country | United States |
#2 Potomac
Census-designated place in Montgomery County, Maryland, United States
| Population | 44,965 |
| Coordinates | 39.0181700, -77.2085900 |
| Altitude | 110 |
| Country | United States |
End: Potomac (-77.20859, 39.01817)
Estimated Travel Time
Distance: 63 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 17m |
| 40 mph (64.37 km/h) | 00h 58m |
| 50 mph (80.47 km/h) | 00h 46m |
| 60 mph (96.56 km/h) | 00h 38m |
| 70 mph (112.65 km/h) | 00h 33m |
| 80 mph (129 km/h) | 00h 29m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $5.64 | $11.28 |
| Mid-grade | $4.60 | $6.35 | $12.69 |
| Premium | $4.95 | $6.84 | $13.67 |
| Diesel | $5.98 | $8.25 | $16.50 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Maryland · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.