Gwynn Oak to Brentwood is 35.9 miles and takes about 58 minutes via Baltimore-Washington Parkway, with a fuel budget near $6 and enough daylight to finish in a day. This drive stays within Maryland, connecting two points in the Northeast region. Expect a highway-focused experience for most of the journey. With a relatively short duration and straightforward path, this route is ideal for a quick trip or as part of a larger travel plan, offering a practical way to cover ground between these locations.
Main Roads
Road
Distance
Duration
Baltimore-Washington Parkway
21.6 mi
29m
MD 166
3.3 mi
3m
Ingleside Avenue
2.8 mi
5m
West Forest Park Avenue
1.4 mi
3m
Annapolis Road
1.3 mi
2m
South Rolling Road
1.2 mi
2m
Bloomsbury Avenue
0.9 mi
2m
Hillsdale Road
0.9 mi
2m
Longest stretch:
Baltimore-Washington Parkway
— 21.6 mi, about 29m
Turn-by-Turn Driving Directions
Step-by-step road directions between Gwynn Oak, MD and Brentwood, MD.
1
Start on this road
60 ft·6 sec·this road
2
Turn right onto Haddon Avenue
178 ft·11 sec·Haddon Avenue
3
Turn left onto Hillsdale Road
0.9 mi·2 min·Hillsdale Road
4
Turn slight right onto West Forest Park Avenue
1.4 mi·3 min·West Forest Park Avenue
5
Continue on Ingleside Avenue
2.8 mi·5 min·Ingleside Avenue
Use the left / straight lanes.
6
Continue on Bloomsbury Avenue
0.9 mi·2 min·Bloomsbury Avenue
7
At end of road, turn left onto MD 166
0.9 mi·2 min·South Rolling Road
8
Continue on MD 166
0.3 mi·39 sec·South Rolling Road
Use the straight lane.
9
Turn left onto MD 166
3.3 mi·3 min·MD 166
Toward I 195 EastUse the left lane.
10
Take the exit
0.6 mi·1 min
Exit 2BToward MD 295 South: WashingtonUse the straight / slight right lanes.
11
Merge onto MD 295
22 mi·29 min·Baltimore-Washington Parkway
Use the straight / slight right lanes.
12
Take the exit
0.2 mi·27 sec
Toward MD 450: Annapolis, BladensburgUse the slight right lane.
13
Keep slight right at fork
299 ft·7 sec
Toward MD 450: Bladensburg
14
Turn straight onto MD 450
1.3 mi·2 min·Annapolis Road
15
Continue on MD 450
0.7 mi·1 min·Bladensburg Road
16
Turn right onto MD 208
0.2 mi·22 sec·38th Avenue
17
Continue on MD 208
0.5 mi·1 min·38th Street
18
Arrive at destination
MD 208
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
The midpoint is around 17.9 miles from Gwynn Oak, MD, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 9
5 decision points cluster between mile 0 and 33.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0 mi into trip|~0m in|Haddon Avenue
Turn right onto Haddon Avenue
Navigation decision point
6
7.3 mi into trip|~17m in|MD 166
Turn left onto MD 166 toward I 195 East
Lane positioning matters here
Use the left lane.
Toward I 195 East
7
10.6 mi into trip|~21m in
Take the exit toward MD 295 South: Washington
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 2B
Toward MD 295 South: Washington
7
32.9 mi into trip|~52m in
Take the exit toward MD 450: Annapolis, Bladensburg
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward MD 450: Annapolis, Bladensburg
6
33.1 mi into trip|~52m in
Keep slight right at fork toward MD 450: Bladensburg
Highway fork - watch signs carefully
Toward MD 450: Bladensburg
Fuel & Cost
Regular Gas
$6.27 one way
$12.54 round trip
$4.44/gal25.4 MPG avg13 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.86
$6.86
$13.73
premium
$5.20
$7.34
$14.69
diesel
$6.18
$8.73
$17.47
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$6
Estimated CO2 emission: 12.6 kg one way.
Prices: EIA weekly data, 2026-10-19.
Driving Electric?
About $4 in charging
· 0 stops
· 69% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
10.8
0
$3.77
$1.72
Efficient EV
9
0
$3.14
$1.44
EV Truck/SUV
14.4
0
$5.03
$2.30
Gas CO2
13 kg
EV CO2
4 kg (69% 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 Oct 19, 2026
Origin
Gwynn Oak, MD
Late night
in Gwynn Oak on Wednesday
Local time
3:01 AM
EDT
Current temp
66°F
Sunny
N 6 to 10 mph0% chanceLive forecast
Coastal Flood Watch
Coastal Flood Watch issued October 19 at 4:09AM EDT until October 21 at 10:00PM EDT by NWS Wakefield VA
Coastal Flood Watch
Coastal Flood Watch issued October 19 at 4:09AM EDT until October 21 at 10:00PM EDT by NWS Wakefield VA
Destination
Brentwood, MD
Late night
in Brentwood on Wednesday
Local time
3:01 AM
EDT
Current temp
66°F
Sunny
N 6 to 10 mph0% chanceLive forecast
Coastal Flood Watch
Coastal Flood Watch issued October 19 at 4:09AM EDT until October 21 at 10:00PM EDT by NWS Wakefield VA
Coastal Flood Watch
Coastal Flood Watch issued October 19 at 4:09AM EDT until October 21 at 10:00PM EDT by NWS Wakefield VA
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
58m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
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 predominantly highway-focused, with 70% of it on faster roads. You'll experience stretches like the 21.6-mile portion on the Baltimore-Washington Parkway, which offers a consistent driving pace. The journey begins with local roads like Ingleside Avenue and MD 166 before merging onto the parkway. This blend means you'll transition from potentially more stop-and-go traffic to a smoother, more continuous drive, making it a straightforward experience behind the wheel.
70% highway — fuel and pacing are the main things to plan.
18 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 21.6 mi on Baltimore-Washington Parkway.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on Baltimore-Washington Parkway and MD 166. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes early in the drive near Haddon Avenue.
Driving Effort7/10
Focused - busy navigation packed into a short drive
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 9 decision points packed into just 35.9 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 58m.
Where does it get tricky?
The main spots that need attention: near the start (Haddon Avenue): Navigation decision point; at 7.3 miles (MD 166): Lane positioning matters here; at 10.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Elevation Profile
Mostly flat terrain
477 ft24 ft
Total Climb
390 ft
Total Descent
793 ft
Highest Point
477 ft
~5.1 mi in
Elevation Range
454 ft
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 Gwynn Oak, MD to Brentwood, MD, road signs begin pointing toward Bladensburg along the way.
Mount Rainier is a city of 8,000 people (2019) in Prince George's County. A large area of Mount Rainier is considered a historic district by the National Register of Historic Places. Mount Rainier still has many of the charms and attractive features that it had in the early 1900s. This article also covers the neighboring community of Brentwood.
Doable as a same-day drive at 58m. Total distance: 35.9 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
58m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (70%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 21.6 miles on Baltimore-Washington Parkway. The full list of main roads is in the Roads section above.
Yes — we found about 1 rest area or service plaza within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
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 Brentwood, 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: near the start (Haddon Avenue): Navigation decision point; at 7.3 miles (MD 166): Lane positioning matters here; at 10.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Yes — Chesapeake & Ohio Canal National Historical Park. See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at Brentwood, MD before heading back.
