How far is Olney, MD from Walker Mill, MD?
The driving distance from Olney, MD to Walker Mill, MD is about 30.8 miles (49.5 km), with a travel time of about 00h 47m by car.
- The straight-line flight distance is about 21.4 miles (34.5 km).
- For a round trip, plan for roughly 01h 34m 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 47m.
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.
Census designated place in Prince George's County, Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Olney and Walker Mill.
Turn-by-Turn Driving Directions
Step-by-step road directions between Olney and Walker Mill.
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1
Start on Georgia Avenue
2.6 mi · 5 min · Georgia Avenue
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2
Turn slight left onto MD 200 Toll East
152 m · 21 sec
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3
Take the ramp slight left toward MD 200 Toll East
2116 ft · 52 sec
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4
Merge slight left onto Intercounty Connector
4.4 mi · 5 min · Intercounty Connector
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5
Take the exit slight right toward MD 650: Ashton, White Oak
1269 ft · 31 sec
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6
Keep slight right to continue on MD 650 South: White Oak
110 m · 9 sec
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7
Turn straight onto New Hampshire Avenue
5.1 mi · 9 min · New Hampshire Avenue
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8
Take the ramp slight right toward I 495 East: Baltimore, College Park
1019 ft · 25 sec
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9
Merge slight left onto Capital Beltway
14.4 mi · 19 min · Capital Beltway
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10
Take the exit slight right toward MD 221A: Capitol Heights, Upper Marlboro
1696 ft · 41 sec
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11
Keep slight left to continue on East Upper Marlboro, Ritchie - Marlboro Road
628 ft · 15 sec
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12
Enter the roundabout and take exit 1 toward Ritchie Marlboro Road
6 m · 1 sec · Ritchie Marlboro Road
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13
Exit the roundabout onto Ritchie Marlboro Road
800 ft · 16 sec · Ritchie Marlboro Road
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14
Continue on Walker Mill Road
2.3 mi · 4 min · Walker Mill Road
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15
Turn right onto Karen Boulevard
2109 ft · 2 min · Karen Boulevard
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16
Arrive at your destination
0 m · 1 sec · Karen Boulevard
Car Route Details
A richer read on the saved driving route between Olney and Walker Mill.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Capital Beltway
Merge slight left onto Capital Beltway
14.4 mi · 00h 19m
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.
Rain Showers leaving Olney and Chance Rain Showers near Walker Mill.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Olney to Walker Mill?
The road trip is about 30.8 miles (49.5 km) and usually takes 00h 47m 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?
Beltsville is a useful midpoint, sitting about 15.4 miles from Olney and 15.4 miles from Walker Mill.
How much longer is the road route than the straight-line distance?
The direct path is about 21.4 miles (34.5 km), while the road route adds roughly 9.4 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 4:56 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.45 one way or $8.91 round trip. Estimated CO2 is about 9.7 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers around Olney and Chance Rain Showers near Walker Mill.
Stop Ideas Near Beltsville
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
United States Capitol
D C Government
THEARC: Town Hall Education Arts Recreation Campus
Town Hall Liquor And Bar
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Beltsville.
New Carrollton station
Washington Union Station
Rockville station
BWI Rail Station
Flight Path Map
This map shows the direct air route between Olney and Walker Mill. Straight-line distance: 21.46 mi (34.53 km).
#1 Olney
Unincorporated area of Montgomery County, Maryland, United States of America
| Population | 33,844 |
| Coordinates | 39.1531600, -77.0669200 |
| Altitude | 165 |
| Country | United States |
#2 Walker Mill
Census designated place in Maryland, United States
| Population | 11,302 |
| Coordinates | 38.8753900, -76.8883100 |
| Altitude | 61 |
| Country | United States |
End: Walker Mill (-76.88831, 38.87539)
Estimated Travel Time
Distance: 50 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 01m |
| 40 mph (64.37 km/h) | 00h 46m |
| 50 mph (80.47 km/h) | 00h 36m |
| 60 mph (96.56 km/h) | 00h 30m |
| 70 mph (112.65 km/h) | 00h 26m |
| 80 mph (129 km/h) | 00h 23m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $4.45 | $8.91 |
| Mid-grade | $4.60 | $5.01 | $10.03 |
| Premium | $4.95 | $5.40 | $10.80 |
| Diesel | $5.98 | $6.52 | $13.04 |
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 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.