Rockville, MD to Greensboro, MD is 86.5 miles and takes about 2h via Blue Star Memorial Highway and John Hanson Highway, with a fuel budget near $14 and enough daylight to finish in a day. This trip stays within Maryland, connecting the Northeast regions of both starting and ending points. Expect a drive that primarily utilizes surface roads, making it a good option for a relaxed, single-day excursion. With a short duration and manageable distance, this route offers a straightforward way to travel between these two Maryland locations without extensive planning.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
43.2 miles from Rockville, MD
A natural place for your longest stop of the day
, about 56m into the drive
.
Main Roads
Road
Distance
Duration
Blue Star Memorial Highway
21.6 mi
30m
John Hanson Highway
18.7 mi
21m
Capital Beltway
16.3 mi
21m
Ridgely Road
6.9 mi
12m
US 50
6.9 mi
9m
Queen Anne Highway
6.2 mi
8m
I 270
5.3 mi
7m
6th Street
0.9 mi
1m
Longest stretch:
Blue Star Memorial Highway
— 21.6 mi, about 30m
Turn-by-Turn Driving Directions
Step-by-step road directions between Rockville, MD and Greensboro, MD.
1
Start on South Washington Street
63 ft·8 sec·South Washington Street
2
Turn left onto West Montgomery Avenue
0.2 mi·33 sec·West Montgomery Avenue
3
Continue on Great Falls Road
0.6 mi·1 min·Great Falls Road
4
Turn right onto MD 189
432 ft·17 sec·Falls Road
5
Continue on MD 189
471 ft·18 sec·Falls Road
6
Take the ramp
0.3 mi·51 sec
Toward I 270 SouthUse the left lane.
7
Merge onto I 270
2.6 mi·3 min·I 270
8
Keep slight left at fork onto I 270
2.8 mi·3 min·I 270
Toward I 270 South: Silver Spring, College ParkUse the slight left / straight lanes.
9
Merge onto I 495
16 mi·21 min·Capital Beltway
Use the straight / slight right lanes.
10
Take the exit
1.0 mi·2 min
Exit 19AToward US 50 East: AnnapolisUse the straight / slight right lanes.
11
Merge onto US 50
19 mi·21 min·John Hanson Highway
Use the straight / slight right lanes.
12
Continue on US 50; US 301; MD 2
22 mi·30 min·Blue Star Memorial Highway
Use the straight / slight right lanes.
13
Keep slight right at fork onto US 50
6.9 mi·9 min·US 50
Toward US 50 East: Ocean City, Rehoboth
14
Turn left onto MD 404
6.2 mi·8 min·Queen Anne Highway
Use the left lane.
15
Continue on Shore Highway
0.7 mi·1 min·Shore Highway
Use the left lane.
16
Turn left onto MD 480
2.9 mi·5 min·Ridgely Road
Use the left lane.
17
Continue on MD 312; MD 480
0.9 mi·1 min·6th Street
18
Continue on MD 480
4.1 mi·7 min·Ridgely Road
19
Continue on MD 480
0.4 mi·42 sec·South Main Street
20
Turn right onto MD 314
137 ft·2 sec·East Sunset Avenue
21
Arrive at destination
MD 314
Trip Plan
Given the 2-hour drive time, departing in the morning from Rockville, MD, allows ample time to reach Greensboro, MD, without feeling rushed. Since this is a relatively short trip with no recommended stops, you have the flexibility to leave when it's most convenient for you. Keep an eye on your fuel gauge, as the estimated fuel cost is around $14 for the 86.5-mile journey. The longest stretch without a significant break is 21.6 miles on the Blue Star Memorial Highway, so plan your fuel stops accordingly before you begin this segment.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 43.2 miles from Rockville, MD, or about 56m into the drive.
The longest continuous stretch on this route runs about 21.6 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 19 miles or 26m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 43.2 miles or 56m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 39m
Traffic, exits, and arrival timing usually matter more near Greensboro, MD than in the middle of the route.
Before You Leave
+
Open the route before leaving Rockville, MD so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Rockville, MD
This is one driving day of about 86.5 miles and 2h.
Your first comfortable stop window is around 19 miles from Rockville, MD.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on Blue Star Memorial Highway for about 21.6 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 11
5 decision points cluster between mile 1 and 64.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
1 mi into trip|~2m in
Take the ramp toward I 270 South
Lane positioning matters here
Use the left lane.
Toward I 270 South
8
3.9 mi into trip|~7m in|I 270
Keep slight left at fork onto I 270 toward I 270 South: Silver Spring, College Park
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left / straight lanes.
Toward I 270 South: Silver Spring, College Park
5
6.7 mi into trip|~11m in|I 495 / Capital Beltway
Merge onto I 495 / Capital Beltway
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
7
23 mi into trip|~32m in
Take the exit toward US 50 East: Annapolis
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 19A
Toward US 50 East: Annapolis
6
64.3 mi into trip|~1h 26m in|US 50
Keep slight right at fork onto US 50 toward US 50 East: Ocean City, Rehoboth
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward US 50 East: Ocean City, Rehoboth
Fuel & Cost
Regular Gas
$14.34 one way
$28.68 round trip
$4.21/gal25.4 MPG avg30 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.61
$15.71
$31.41
premium
$4.93
$16.78
$33.55
diesel
$5.61
$19.10
$38.20
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$14
Meals
$25–$50
Total
$39–$64
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 30.3 kg one way.
Prices: EIA weekly data, 2026-04-13.
EV Charging Along Route
13 DC fast chargers
· Coverage: excellent
Rio Washingtonian Center - Tesla Supercharger
Gaithersburg, MD
Tesla
12 DCFC
Gaithersburg, MD Rechargery Relay - S Frederick Ave
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $9 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
26
0
$9.08
$4.15
Efficient EV
21.6
0
$7.57
$3.46
EV Truck/SUV
34.6
0
$12.11
$5.54
Gas CO2
30 kg
EV CO2
10 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Apr 20, 2026
Origin
Rockville, MD
Morning
in Rockville on Tuesday
Local time
8:35 AM
EDT
Current temp
65°F
Unavailable
Live forecast
Destination
Greensboro, MD
Morning
in Greensboro on Tuesday
Local time
8:35 AM
EDT
Current temp
65°F
Unavailable
Live forecast
73°F
Crofton, MD
43 mi in
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
Very similar conditions
Both ends of the route are sitting at about the same temperature right now.
Road read
2h on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
This route is mostly surface roads, with only a 14% highway share. You'll experience a longest stretch of 21.6 miles on the Blue Star Memorial Highway before transitioning to surface roads. Be prepared for frequent intersections and local traffic as you navigate through populated areas and smaller towns. The majority of your time will be spent on roads with posted speed limits common to urban and suburban environments.
Only 14% highway — the rest is turn-by-turn surface driving.
21 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 21.6 mi on Blue Star Memorial Highway.
How Hard Is This Drive?
8/10
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 1 miles in.
Driving Effort8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 11 significant decision points across 86.5 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 1 miles: Lane positioning matters here; at 3.9 miles (I 270): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 6.7 miles (I 495 / Capital Beltway): Merge point - match speed before joining. Lane positioning matters here.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Rockville, MD to Greensboro, MD, road signs begin pointing toward Rehoboth along the way.
Doable as a same-day drive at 2h. Total distance: 86.5 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
2h drive, comfortable solo distance.
Scenic Drive
Mostly surface roads route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 21.6 miles on Blue Star Memorial Highway. The full list of main roads is in the Roads section above.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Greensboro, MD before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 1 miles: Lane positioning matters here; at 3.9 miles (I 270): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 6.7 miles (I 495 / Capital Beltway): Merge point - match speed before joining. Lane positioning matters here.
Yes. A round trip is manageable in a single day if you plan a break at Greensboro, MD before heading back.
