Gaithersburg, MD to Rock Hall, MD is 106.8 miles and takes about 2h 32m via Blue Star Memorial Highway, with a fuel budget near $19 and enough daylight to finish in a day. This trip stays within Maryland, moving from the Northeast region to the Northeast region. With a majority of the drive on surface roads, expect a more local feel rather than a high-speed interstate cruise. This route is well-suited for a single day, allowing ample time for departure flexibility and a relaxed arrival.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
53.4 miles from Gaithersburg, MD
A natural place for your longest stop of the day
, about 1h 10m into the drive
.
Main Roads
Road
Distance
Duration
Blue Star Memorial Highway
27.3 mi
38m
John Hanson Highway
18.7 mi
21m
Capital Beltway
16.3 mi
21m
Church Hill Road
14.9 mi
22m
I 270
9.4 mi
12m
Rock Hall Road
6.8 mi
11m
Chestertown Road
4.5 mi
7m
Centreville Road
2 mi
3m
Longest stretch:
Blue Star Memorial Highway
— 27.3 mi, about 38m
Traffic on I-495
Hour-of-day weekday pattern from 8 FHWA count stations on your route.
Peak
3 PM
~6,323 veh/hr typical
Quietest
2 AM
~550 veh/hr
Peak-to-quiet ratio
11.5×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 33 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Gaithersburg, MD and Rock Hall, MD.
1
Start on this road
85 ft·12 sec·this road
2
Turn left onto MD 355
251 ft·12 sec·North Frederick Avenue
3
Turn left onto Chestnut Street
0.3 mi·49 sec·Chestnut Street
Use the left lane.
4
Turn right onto MD 117
0.5 mi·1 min·West Diamond Avenue
Use the right lane.
5
Take the ramp
0.3 mi·39 sec
Toward I 270 South: Washington
6
Merge onto I 270
1.4 mi·1 min·Eisenhower Memorial Highway
7
Keep slight left at fork onto I 270
6.6 mi·9 min·I 270
Use the straight / slight right lanes.
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 left at fork onto US 301
5.7 mi·8 min·Blue Star Memorial Highway
Toward US 301 North
14
Take the exit
0.3 mi·49 sec
Toward MD 213 North
15
Turn straight onto MD 213
2.0 mi·3 min·Centreville Road
16
Continue on MD 213
0.6 mi·1 min·South Commerce Street
17
Continue on MD 213
15 mi·22 min·Church Hill Road
18
Continue on MD 213
0.1 mi·13 sec·Chestertown Church Hill Road
19
Continue on MD 213
0.2 mi·27 sec·Maple Avenue
20
Turn left onto MD 289
0.1 mi·23 sec·North Cross Street
21
Turn right onto High Street
0.9 mi·1 min·High Street
22
Enter roundabout onto MD 20
145 ft·3 sec·High Street
23
Continue on MD 20
0.4 mi·44 sec·High Street
24
Continue on MD 20
4.4 mi·7 min·Chestertown Road
25
Keep slight left at fork onto MD 20
362 ft·7 sec·Chestertown Road
26
Continue on MD 20
6.8 mi·11 min·Rock Hall Road
27
Continue on MD 20
0.4 mi·1 min·Rock Hall Avenue
28
Turn left onto MD 445
120 ft·2 sec·Main Street
29
Arrive at destination
MD 445
Trip Plan
Given the 2.5-hour drive time, leaving in the morning from Gaithersburg is ideal, allowing for a full day in Rock Hall. Plan for one stop along the way; the 106.8-mile distance doesn't necessitate multiple breaks. Keep an eye on your fuel gauge, as the estimated cost is $19, and it’s always wise to fill up before you get too low, especially when transitioning to more surface roads. The flexibility of a one-day trip means you can adjust your departure time based on traffic conditions around the Capital Beltway.
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.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 53.4 miles from Gaithersburg, MD, or about 1h 10m into the drive.
The longest continuous stretch on this route runs about 27.3 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 23 miles or 31m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 53.4 miles or 1h 10m 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 59m
Traffic, exits, and arrival timing usually matter more near Rock Hall, MD than in the middle of the route.
Before You Leave
+
Open the route before leaving Gaithersburg, 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 Gaithersburg, MD
This is one driving day of about 106.8 miles and 2h 32m.
Your first comfortable stop window is around 23 miles from Gaithersburg, MD.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on Blue Star Memorial Highway for about 27.3 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 17
5 decision points cluster between mile 0 and 28.2 — 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|MD 355 / North Frederick Avenue
Turn left onto MD 355 / North Frederick Avenue
Navigation decision point
6
0.1 mi into trip|~0m in|Chestnut Street
Turn left onto Chestnut Street
Lane positioning matters here
Use the left lane.
6
2.5 mi into trip|~4m in|I 270
Keep slight left at fork onto I 270
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
8
9.1 mi into trip|~13m 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
7
28.2 mi into trip|~38m 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
Fuel & Cost
Regular Gas
$18.89 one way
$37.78 round trip
$4.49/gal25.4 MPG avg37 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.92
$20.69
$41.37
premium
$5.24
$22.05
$44.10
diesel
$5.35
$22.50
$44.99
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$19
Meals
$25–$50
Total
$44–$69
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 37.4 kg one way.
Prices: EIA weekly data, 2026-06-01.
Driving Electric?
About $11 in charging
· 0 stops
· 68% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
32
0
$11.21
$5.13
Efficient EV
26.7
0
$9.35
$4.27
EV Truck/SUV
42.7
0
$14.95
$6.84
Gas CO2
37 kg
EV CO2
12 kg (68% 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 Jun 2, 2026
Origin
Gaithersburg, MD
Afternoon
in Gaithersburg on Wednesday
Local time
2:59 PM
EDT
Current temp
52°F
Partly Cloudy
NE 3 mph1% chanceLive forecast
Beach Hazards Statement
Beach Hazards Statement issued June 1 at 6:59PM EDT until June 2 at 8:00PM EDT by NWS Wakefield VA
Destination
Rock Hall, MD
Afternoon
in Rock Hall on Wednesday
Local time
2:59 PM
EDT
Current temp
75°F
Sunny
N 5 to 10 mph10% chanceLive forecast
Beach Hazards Statement
Beach Hazards Statement issued June 1 at 6:59PM EDT until June 2 at 8:00PM EDT by NWS Wakefield VA
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
23 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
2h 32m 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.
National Parks Near This Route
Worth a detour if your schedule allows.
Chesapeake & Ohio Canal National Historical Park
National Historical Park
Preserving America's early transportation history, the C&O Canal began as a dream of passage to Western wealth. Operating for nearly 100 years the canal was a lifeline for communities along the Potoma...
The Potomac River corridor is rich in both history and recreation, offering a chance to both explore your heritage and choose your adventure along the way. Start your journey here!
During the summer of 1864, the Confederacy carried out a bold plan to turn the tide of the Civil War in their favor. They planned to capture Washington, DC and influence the election of 1864. On July...
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is primarily surface roads, with only 9% on highways like the Blue Star Memorial Highway and John Hanson Highway. You'll experience the longest continuous stretch on the Blue Star Memorial Highway, covering 27.3 miles. Expect to encounter more frequent intersections and traffic signals as you transition away from the limited-access portions of the main roads.
Only 9% highway — the rest is turn-by-turn surface driving.
29 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 27.3 mi on Blue Star Memorial Highway.
How Hard Is This Drive?
9/10
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 early in the drive near MD 355 / North Frederick Avenue.
Driving Effort9/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 17 significant decision points across 106.8 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: near the start (MD 355 / North Frederick Avenue): Navigation decision point; at 0.1 miles (Chestnut Street): Lane positioning matters here; at 2.5 miles (I 270): Highway fork - watch signs carefully. Lane positioning matters here.
Elevation Profile
Mostly flat terrain
501 ft12 ft
Total Climb
154 ft
Total Descent
638 ft
Highest Point
501 ft
Elevation Range
489 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 Gaithersburg, MD to Rock Hall, MD, road signs begin pointing toward College Park along the way.
College Park
9.1 mi in|~13m|via I 270
Detours Along the Way
Tagged by where each one fits in your drive — first break, midpoint, final stretch.
Doable as a same-day drive at 2h 32m. Total distance: 106.8 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
2h 32m drive, comfortable solo distance.
Scenic Drive
Mostly surface roads route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 27.3 miles on Blue Star Memorial Highway. The full list of main roads is in the Roads section above.
Yes — we found about 2 rest areas or service plazas 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 Rock Hall, 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. Plan at least 1 meaningful breaks. There are 2 rest areas along the route for bathroom stops.
The main spots that need attention: near the start (MD 355 / North Frederick Avenue): Navigation decision point; at 0.1 miles (Chestnut Street): Lane positioning matters here; at 2.5 miles (I 270): Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Chesapeake & Ohio Canal National Historical Park, Potomac Heritage National Scenic Trail and Monocacy National Battlefield. 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 Rock Hall, MD before heading back.
