Catonsville, MD to Greensboro, MD is 66.1 miles and takes about 1h 36m via Blue Star Memorial Highway and Baltimore Beltway, with a fuel budget near $11 and enough daylight to finish in a day. This trip stays within Maryland, moving from the Northeast region of the state to its Eastern Shore. Given its relatively short distance and primarily surface road profile, this is a straightforward drive suitable for a same-day excursion. You'll find it to be a practical route for reaching your destination without extensive time commitment.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
33.1 miles from Catonsville, MD
A natural place for your longest stop of the day
, about 47m into the drive
.
Main Roads
Road
Distance
Duration
Blue Star Memorial Highway
19.1 mi
27m
Baltimore Beltway
8.4 mi
11m
Ridgely Road
6.9 mi
12m
US 50
6.9 mi
9m
Arundel Expressway
6.6 mi
9m
Queen Anne Highway
6.2 mi
8m
Governor Ritchie Highway
6.1 mi
8m
Ritchie Highway
2.4 mi
3m
Longest stretch:
Blue Star Memorial Highway
— 19.1 mi, about 27m
Turn-by-Turn Driving Directions
Step-by-step road directions between Catonsville, MD and Greensboro, MD.
1
Start on this road
37 ft·8 sec·this road
2
Turn left onto MD 144
0.4 mi·1 min·Frederick Road
3
Take the ramp
0.3 mi·33 sec
Toward I 695 South: Glen Burnie
4
Merge onto I 695
8.4 mi·11 min·Baltimore Beltway
Use the straight / slight right lanes.
5
Take the exit
0.6 mi·1 min
Exit 2Toward MD 10 South: Severna ParkUse the straight / slight right lanes.
6
Continue on MD 10
5.9 mi·8 min·Arundel Expressway
Use the straight lane.
7
Keep slight right at fork onto MD 10
0.7 mi·1 min·Arundel Expressway
Toward MD 10 South: Severna ParkUse the slight right lane.
8
Turn left onto MD 2
2.4 mi·3 min·Ritchie Highway
9
Continue on MD 2
6.1 mi·8 min·Governor Ritchie Highway
Use the straight lane.
10
Take the exit
0.2 mi·22 sec
Toward US 50 East, US 301 North: Bay Bridge
11
Merge onto US 50; US 301
19 mi·27 min·Blue Star Memorial Highway
Use the straight / slight right lanes.
12
Keep slight right at fork onto US 50
6.9 mi·9 min·US 50
Toward US 50 East: Ocean City, Rehoboth
13
Turn left onto MD 404
6.2 mi·8 min·Queen Anne Highway
Use the left lane.
14
Continue on Shore Highway
0.7 mi·1 min·Shore Highway
Use the left lane.
15
Turn left onto MD 480
2.9 mi·5 min·Ridgely Road
Use the left lane.
16
Continue on MD 312; MD 480
0.9 mi·1 min·6th Street
17
Continue on MD 480
4.1 mi·7 min·Ridgely Road
18
Continue on MD 480
0.4 mi·42 sec·South Main Street
19
Turn right onto MD 314
137 ft·2 sec·East Sunset Avenue
20
Arrive at destination
MD 314
Trip Plan
Given the modest 1h 36m duration, you have considerable flexibility with your departure time. Leaving in the morning allows you to complete the 66.1-mile drive well before evening, avoiding the need for overnight accommodations. Plan for one brief stop if needed, as the longest stretch between potential services is 19.1 miles on the Blue Star Memorial Highway. Keep an eye on your fuel gauge, as the estimated cost is around $11, and it's always wise to top off before heading out on any trip.
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 33.1 miles from Catonsville, MD, or about 47m into the drive.
The longest continuous stretch on this route runs about 19.1 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 15 miles or 21m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 33.1 miles or 47m 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 20m
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 Catonsville, MD so your first major turns are already loaded.
Day 1
Settle into the route from Catonsville, MD
This is one driving day of about 66.1 miles and 1h 36m.
Your first comfortable stop window is around 15 miles from Catonsville, 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 19.1 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 0.7 and 43.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0.7 mi into trip|~1m in|I 695 / Baltimore Beltway
Merge onto I 695 / Baltimore Beltway
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
7
9 mi into trip|~13m in
Take the exit toward MD 10 South: Severna Park
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 2
Toward MD 10 South: Severna Park
7
15.5 mi into trip|~22m in|MD 10 / Arundel Expressway
Keep slight right at fork onto MD 10 / Arundel Expressway toward MD 10 South: Severna Park
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Toward MD 10 South: Severna Park
5
24.6 mi into trip|~35m in
Take the exit toward US 50 East, US 301 North: Bay Bridge
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 50 East, US 301 North: Bay Bridge
6
43.9 mi into trip|~1h 3m 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
$10.96 one way
$21.92 round trip
$4.21/gal25.4 MPG avg23 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.61
$12.00
$24.00
premium
$4.93
$12.82
$25.64
diesel
$5.61
$14.59
$29.19
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$11
Meals
$25–$50
Total
$36–$61
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 23.1 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $7 in charging
· 0 stops
· 65% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
19.8
0
$6.94
$3.17
Efficient EV
16.5
0
$5.78
$2.64
EV Truck/SUV
26.4
0
$9.25
$4.23
Gas CO2
23 kg
EV CO2
8 kg (65% 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 17, 2026
Origin
Catonsville, MD
Late night
in Catonsville on Sunday
Local time
4:03 AM
EDT
Current temp
72°F
Unavailable
Live forecast
Destination
Greensboro, MD
Late night
in Greensboro on Sunday
Local time
4:03 AM
EDT
Current temp
75°F
Unavailable
Live forecast
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
3 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
1h 36m 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 drive features a 20% highway share, with the longest continuous stretch on the Blue Star Memorial Highway extending for 19.1 miles. Expect to transition from highway driving to primarily surface roads as you progress. The route involves navigating through areas with potentially dense local traffic and numerous intersections as you move away from the main highways.
Only 20% highway — the rest is turn-by-turn surface driving.
20 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 19.1 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 0.7 miles in near I 695 / Baltimore Beltway.
Driving Effort8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 66.1 miles you will encounter 11 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 0.7 miles (I 695 / Baltimore Beltway): Merge point - match speed before joining. Lane positioning matters here; at 9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 15.5 miles (MD 10 / Arundel Expressway): Highway fork - watch signs carefully. 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 Catonsville, MD to Greensboro, MD, road signs begin pointing toward Rehoboth along the way.
Rehoboth
43.9 mi in|~1h 3m|via US 50
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 1h 36m. Total distance: 66.1 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
1h 36m drive, comfortable solo distance.
Scenic Drive
Mostly surface roads route profile.
Frequently Asked Questions
The longest stretch is about 19.1 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.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: at 0.7 miles (I 695 / Baltimore Beltway): Merge point - match speed before joining. Lane positioning matters here; at 9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 15.5 miles (MD 10 / Arundel Expressway): Highway fork - watch signs carefully. 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.
