How far is Adelphi, MD from Olney, MD?
The driving distance from Adelphi, MD to Olney, MD is about 14.1 miles (22.7 km), with a travel time of about 00h 25m by car.
- The straight-line flight distance is about 11.6 miles (18.6 km).
- For a round trip, plan for roughly 00h 51m 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 25m.
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.
Unincorporated area in Montgomery County, Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Adelphi and Olney.
Turn-by-Turn Driving Directions
Step-by-step road directions between Adelphi and Olney.
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1
Start on Riggs Road
596 ft · 14 sec · Riggs Road
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2
Turn left onto Edwards Way
745 ft · 28 sec · Edwards Way
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3
At the end of the road, turn left onto Adelphi Road
3021 ft · 1 min · Adelphi Road
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4
Turn right onto New Hampshire Avenue
7 mi · 12 min · New Hampshire Avenue
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5
Turn left onto Norwood Road
2.9 mi · 6 min · Norwood Road
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6
Turn straight onto Doctor Bird Road
1.1 km · 1 min · Doctor Bird Road
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7
Turn left onto Olney Sandy Spring Road
1.4 mi · 2 min · Olney Sandy Spring Road
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8
Turn sharp left onto Georgia Avenue
36 m · 14 sec · Georgia Avenue
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9
Arrive at your destination
0 m · 1 sec · Georgia Avenue
Car Route Details
A richer read on the saved driving route between Adelphi and Olney.
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.
New Hampshire Avenue
Turn right onto New Hampshire Avenue
6.99 mi · 00h 12m
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.
Partly Cloudy leaving Adelphi and Mostly Sunny near Olney.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Adelphi to Olney?
The road trip is about 14.1 miles (22.7 km) and usually takes 00h 25m 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?
Colesville is a useful midpoint, sitting about 6.5 miles from Adelphi and 7.6 miles from Olney.
How much longer is the road route than the straight-line distance?
The direct path is about 11.6 miles (18.6 km), while the road route adds roughly 2.5 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 7:38 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.04 one way or $4.09 round trip. Estimated CO2 is about 4.4 kg one way.
What should you check before leaving?
Before you leave, expect Partly Cloudy around Adelphi and Mostly Sunny near Olney.
Stop Ideas Near Colesville
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 Colesville.
Rockville station
New Carrollton station
Washington Union Station
BWI Rail Station
Flight Path Map
This map shows the direct air route between Adelphi and Olney. Straight-line distance: 11.55 mi (18.59 km).
#1 Adelphi
Census designated place in Prince George's County, Maryland, United States
| Population | 15,086 |
| Coordinates | 39.0031700, -76.9719200 |
| Altitude | 52 |
| Country | United States |
#2 Olney
Unincorporated area of Montgomery County, Maryland, United States of America
| Population | 33,844 |
| Coordinates | 39.1531600, -77.0669200 |
| Altitude | 165 |
| Country | United States |
End: Georgia Avenue (-77.066929, 39.153178)
Estimated Travel Time
Distance: 23 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 28m |
| 40 mph (64.37 km/h) | 00h 21m |
| 50 mph (80.47 km/h) | 00h 16m |
| 60 mph (96.56 km/h) | 00h 14m |
| 70 mph (112.65 km/h) | 00h 12m |
| 80 mph (129 km/h) | 00h 10m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.09 | $2.04 | $4.09 |
| Mid-grade | $4.60 | $2.30 | $4.60 |
| Premium | $4.95 | $2.48 | $4.95 |
| Diesel | $5.98 | $2.99 | $5.98 |
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 15, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.