How far is Olney, MD from Green Valley, MD?
The driving distance from Olney, MD to Green Valley, MD is about 25.9 miles (41.7 km), with a travel time of about 00h 38m by car.
- The straight-line flight distance is about 16.4 miles (26.4 km).
- For a round trip, plan for roughly 01h 16m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 38m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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.
The second most populous city in Montgomery County, Maryland.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers
Driving Route Map
The map below follows the saved road route between Olney and Green Valley.
Turn-by-Turn Driving Directions
Step-by-step road directions between Olney and Green Valley.
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1
Start on Georgia Avenue
2.3 mi · 5 min · Georgia Avenue
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2
Take the ramp slight right toward MD 200 Toll West
2241 ft · 55 sec
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3
Merge slight left onto Intercounty Connector
5.3 mi · 7 min · Intercounty Connector
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4
Continue straight
1.7 mi · 2 min
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5
Take the exit slight right toward I 270 North: Frederick
2317 ft · 57 sec
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6
Merge slight left
12.7 mi · 17 min
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7
Take the exit slight right toward MD 109: Hyattstown, Barnesville
1005 ft · 30 sec
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8
At the end of the road, turn left onto Old Hundred Road
2325 ft · 1 min · Old Hundred Road
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9
Turn left onto Frederick Road
2074 ft · 35 sec · Frederick Road
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10
Continue on Urbana Pike
1181 ft · 24 sec · Urbana Pike
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11
Turn right onto Green Valley Road
1.7 mi · 3 min · Green Valley Road
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12
Turn right onto Prices Distillery Road
37 m · 8 sec · Prices Distillery Road
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13
Turn right
15 m · 8 sec
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14
Turn left
60 m · 15 sec
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15
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Olney and Green Valley.
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.
I 270 North
Merge slight left
12.7 mi · 00h 17m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Rain Showers leaving Olney and Rain Showers near Green Valley.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Olney to Green Valley?
The road trip is about 25.9 miles (41.7 km) and usually takes 00h 38m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Gaithersburg is a useful midpoint, sitting about 13 miles from Olney and 13 miles from Green Valley.
How much longer is the road route than the straight-line distance?
The direct path is about 16.4 miles (26.4 km), while the road route adds roughly 9.5 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 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:14 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.72 one way or $7.44 round trip. Estimated CO2 is about 8.1 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers around Olney and Rain Showers near Green Valley.
Stop Ideas Near Gaithersburg
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Griffith Park at City Hall
Gaithersburg City Hall
City of Rockville City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Gaithersburg.
Rockville station
Washington Union Station
Frederick Airport, MD
Frederick, MD
Flight Path Map
This map shows the direct air route between Olney and Green Valley. Straight-line distance: 16.38 mi (26.36 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 Green Valley
Town in Frederick County, Maryland, United States
| Population | 12,262 |
| Coordinates | 39.3092700, -77.2972100 |
| Altitude | 121 |
| Country | United States |
End: Green Valley (-77.29721, 39.30927)
Estimated Travel Time
Distance: 42 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 51m |
| 40 mph (64.37 km/h) | 00h 38m |
| 50 mph (80.47 km/h) | 00h 31m |
| 60 mph (96.56 km/h) | 00h 25m |
| 70 mph (112.65 km/h) | 00h 22m |
| 80 mph (129 km/h) | 00h 19m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $3.72 | $7.44 |
| Mid-grade | $4.60 | $4.19 | $8.37 |
| Premium | $4.95 | $4.51 | $9.02 |
| Diesel | $5.98 | $5.44 | $10.88 |
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.