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Trip from Gwynn Oak, MD to Smithsburg, MD

Drive Time

1h 22m

Distance

67.5 mi

109 km

Drive Score

7/10

Good drive

Same Day?

Yes, doable

Fuel Cost

$11

one way

EV Charging

None

0 DC fast

Best Time to Leave

Save up to 19 min
4 AM
1h 16m ★
6 AM
1h 22m
8 AM
1h 35m
10 AM
1h 27m
12 PM
1h 25m
3 PM
1h 27m
5 PM
1h 34m
8 PM
1h 18m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Best Time Drive vs Fly
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Downtown Gwynn Oak, MD, MD

Gwynn Oak, MD

Iqbal farooz

Trip Overview

The drive from Gwynn Oak, MD to Smithsburg, MD covers 67.5 miles and takes about 1h 22m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.

The route leans on I 70, I 70 Extension, Mapleville Road for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 46.6 miles on I 70. At current regular gas prices, budget about $11.17 one way before food or hotel costs.

Trip Pace

Same-day drive is realistic

A same-day return is realistic if you keep stops short.

Break Rhythm

0 planned breaks

A short stop every 2 to 3 hours is enough for this drive.

Midpoint

33.7 miles from Gwynn Oak, MD

A natural place for your longest stop of the day , about 41m into the drive .

Drive Character

This is a 1h 22m highway drive covering 67.5 miles, with most of the trip on I 70 and I 70 Extension. The longest continuous stretch is about 46.6 miles on I 70.

Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 16 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 70 is the longest continuous segment at about 46.6 miles.

How Hard Is This Drive?

This is a straightforward highway drive that stays mostly on I 70 and I 70 Extension. There are only a few real navigation decisions along the way. The trickiest moment comes early in the drive near Haddon Avenue.

Route Complexity 3/10

Easy - simple navigation with a manageable amount of wheel time

This is a straightforward 1h 22m drive. You will face about 6 decision points, but nothing that requires special attention if you follow navigation.

Where does it get tricky?

The main spots that need attention: near the start (Haddon Avenue): Navigation decision point; near the start (Hillsdale Road): Navigation decision point; at 2.9 miles (I 70 Extension): Merge point - match speed before joining. Lane positioning matters here.

Critical Maneuvers

5 of 6 key points

These are the spots where you need to pay the most attention. Preview them before you drive.

5
0 mi into trip | ~0m in | Haddon Avenue

Turn right onto Haddon Avenue

Navigation decision point

4
0 mi into trip | ~0m in | Hillsdale Road

Turn left onto Hillsdale Road

Navigation decision point

5
2.9 mi into trip | ~7m in | I 70 Extension

Merge onto I 70 Extension

Merge point - match speed before joining. Lane positioning matters here

Use the straight / slight right lanes.
8
61.1 mi into trip | ~1h 11m in

Take the exit toward MD 66: Boonsboro, Smithsburg

Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one

Use the straight / slight right lanes. Exit 35 Toward MD 66: Boonsboro, Smithsburg
4
62.7 mi into trip | ~1h 14m in | MD 66 / Mapleville Road

Enter roundabout onto MD 66 / Mapleville Road

Roundabout - know your exit number before entering

Main Roads

Road Distance Duration
I 70 46.6 mi 50m
I 70 Extension 11.6 mi 13m
Mapleville Road 5.5 mi 9m
West Forest Park Avenue 1.4 mi 3m
Hillsdale Road 0.9 mi 2m
West Water Street 0.6 mi 1m
Ingleside Avenue 0.2 mi <1m
Haddon Avenue <0.1 mi <1m
Longest stretch: I 70 — 46.6 mi, about 50m

Turn-by-Turn Driving Directions

Step-by-step road directions between Gwynn Oak, MD and Smithsburg, MD.

1

Start on the route

59 ft · 6 sec · the route
2

Turn right onto Haddon Avenue

177 ft · 12 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

0.2 mi · 31 sec · Ingleside Avenue
6

Take the ramp slight right toward I 70 West

0.3 mi · 44 sec · I 70 West
7

Merge slight left

12 mi · 13 min
8

Continue straight

4.2 mi · 4 min
9

Continue straight

12 mi · 12 min
10

Continue straight

31 mi · 33 min
11

Take the exit slight right toward MD 66: Boonsboro, Smithsburg

0.2 mi · 31 sec · MD 66: Boonsboro, Smithsburg
12

Turn right onto Mapleville Road

1.4 mi · 2 min · Mapleville Road
13

Enter the roundabout and take exit 2 toward Mapleville Road

154 ft · 3 sec · Mapleville Road
14

Exit the roundabout onto Mapleville Road

4.1 mi · 6 min · Mapleville Road
15

Continue on West Water Street

0.6 mi · 1 min · West Water Street
16

Arrive at your destination

Trip Plan

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 33.7 miles from Gwynn Oak, MD, or about 41m into the drive.
The longest continuous stretch on this route runs about 46.6 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 67.5 miles or 1h 22m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 33.7 miles or 41m 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 7m

Traffic, exits, and arrival timing usually matter more near Smithsburg, MD than in the middle of the route.

Before You Leave

+

Open the route before leaving Gwynn Oak, 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 Gwynn Oak, MD

This is one driving day of about 67.5 miles and 1h 22m.

Your first comfortable stop window is around 80 miles from Gwynn Oak, MD.
This route can stay practical as a one-day drive if traffic stays reasonable.
You may only need one short stretch stop if conditions stay smooth.
The longest stretch is on I 70 for about 46.6 miles.

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

Halfway Point

Midpoint

About 33.7 mi from Gwynn Oak, MD · 41m into the drive

Downtown Washington, DC, DC

Mid-route town

Meal stop

Washington, DC

34 mi into the route

Best for: Lunch, fuel, and a longer reset

This sits close to the middle of the route, so it works well for the longest stop of the day.

Pacing Suggestions

Washington, DC

Fuel and coffee

A short stop after about 67.5 miles helps settle the day before fatigue starts building.

Washington, DC

Meal break

The midpoint is around 33.7 miles from Gwynn Oak, MD, which is a good place for a longer meal and fuel stop.

Arriving in Smithsburg, MD

The final approach into Smithsburg, MD usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.

Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Smithsburg, MD.

These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.

National Parks Near This Route

Worth a detour if your schedule allows.

Monocacy National Battlefield

Monocacy National Battlefield

National Battlefield

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...

3 mi from route ~7 min detour Free near mile 41.9
View on nps.gov
Antietam National Battlefield

Antietam National Battlefield

National Battlefield

23,000 soldiers were killed, wounded or missing after twelve hours of savage combat on September 17, 1862. The Battle of Antietam ended the Confederate Army of Northern Virginia's first invasion into...

8 mi from route ~21 min detour $20 near mile 55.9
View on nps.gov
Harpers Ferry National Historical Park

Harpers Ferry National Historical Park

National Historical Park

At the confluence of the Shenandoah and Potomac rivers, on the ancestral home of the Tuscarora and Shawnee people, lies Harpers Ferry. Here you can explore John Brown's Raid against slavery. Find your...

15 mi from route ~38 min detour $20 near mile 53.5
View on nps.gov
Potomac Heritage National Scenic Trail

Potomac Heritage National Scenic Trail

National Scenic Trail

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!

18 mi from route ~45 min detour Free near mile 44.2
View on nps.gov
Chesapeake & Ohio Canal National Historical Park

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...

25 mi from route ~63 min detour $20 near mile 27.9
View on nps.gov

Park data from the National Park Service API. Alerts update every 2 hours.

Fuel & Cost

Regular Gas

$11.17 one way

$22.34 round trip

$4.20/gal 25.4 MPG avg 24 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $4.60 $12.22 $24.44
premium $4.92 $13.08 $26.16
diesel $5.64 $15.00 $29.99

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: 23.6 kg one way. Prices: EIA weekly data, 2026-04-06.

Driving Electric?

About $7 in charging · 0 stops · 67% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 20.3 0 $7.09 $3.24
Efficient EV 16.9 0 $5.91 $2.70
EV Truck/SUV 27 0 $9.45 $4.32

Gas CO2

24 kg

EV CO2

8 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 data refreshed 5 hours ago

Origin

Gwynn Oak, MD

Morning in Gwynn Oak on Monday

Local time

8:20 AM

EDT

Current temp

55°F

Mostly Cloudy

S 8 mph 0% chance Live forecast

Special Weather Statement

Special Weather Statement issued April 12 at 1:43PM EDT by NWS Baltimore MD/Washington DC

Destination

Smithsburg, MD

Morning in Smithsburg on Monday

Local time

8:20 AM

EDT

Current temp

64°F

Unavailable

Live forecast

Along the Route

68°F

Washington, DC

34 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

9 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 22m 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.

Frequently Asked Questions

The drive from Gwynn Oak, MD to Smithsburg, MD covers 67.5 miles and takes about 1h 22m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 70, I 70 Extension, Mapleville Road. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 33.7 miles from Gwynn Oak, MD. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $11.17 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
This is a straightforward 1h 22m drive. You will face about 6 decision points, but nothing that requires special attention if you follow navigation.
The main spots that need attention: near the start (Haddon Avenue): Navigation decision point; near the start (Hillsdale Road): Navigation decision point; at 2.9 miles (I 70 Extension): Merge point - match speed before joining. Lane positioning matters here.
The route from Gwynn Oak, MD to Smithsburg, MD does not surface many named destination signs beyond the main corridor.

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