How far is Portsmouth, NH from Dover, NH?
The driving distance from Portsmouth, NH to Dover, NH is about 12.1 miles (19.5 km), with a travel time of about 00h 19m by car.
- The straight-line flight distance is about 10.2 miles (16.4 km).
- For a round trip, plan for roughly 00h 38m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 19m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in New Hampshire
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Slight Chance Rain Showers
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Portsmouth and Dover.
Turn-by-Turn Driving Directions
Step-by-step road directions between Portsmouth and Dover.
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1
Start on Congress Street
954 ft · 34 sec · Congress Street
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2
Turn right onto Maplewood Avenue
1.1 km · 2 min · Maplewood Avenue
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3
Turn left onto Cutts Street
139 m · 16 sec · Cutts Street
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4
Turn slight right
1 km · 1 min
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5
Exit the rotary onto NH 16 North: Concord, Rochester
2261 ft · 51 sec
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6
Take the exit straight
961 ft · 15 sec
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7
Keep slight left to continue on Spaulding Turnpike North, NH 16 North, US 4 West
1364 ft · 21 sec
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8
Merge slight left onto Spaulding Turnpike
8.1 mi · 11 min · Spaulding Turnpike
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9
Take the exit slight right toward NH 108: Dover, Durham
1160 ft · 35 sec
-
10
Turn left onto Central Avenue
13 m · 2 sec · Central Avenue
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11
Turn right
37 m · 5 sec
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12
Turn right onto Locust Street
1.2 km · 2 min · Locust Street
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13
Turn straight onto Chestnut Street
1956 ft · 60 sec · Chestnut Street
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14
Turn right onto Third Street
715 ft · 28 sec · Third Street
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15
Turn sharp right onto Central Avenue
65 m · 6 sec · Central Avenue
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16
Turn left
35 m · 5 sec
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17
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Portsmouth and Dover.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Spaulding Turnpike
Merge slight left onto Spaulding Turnpike
8.07 mi · 00h 11m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Mostly Sunny then Slight Chance Rain Showers leaving Portsmouth and Mostly Sunny near Dover.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Portsmouth to Dover?
The road trip is about 12.1 miles (19.5 km) and usually takes 00h 19m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Newington is a useful midpoint, sitting about 6.1 miles from Portsmouth and 6.1 miles from Dover.
How much longer is the road route than the straight-line distance?
The direct path is about 10.2 miles (16.4 km), while the road route adds roughly 1.9 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:52 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $1.70 one way or $3.39 round trip. Estimated CO2 is about 3.8 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Slight Chance Rain Showers around Portsmouth and Mostly Sunny near Dover.
Stop Ideas Near Newington
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Old City Hall
Dover City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Newington.
Portsmouth, New Hampshire
Durham–UNH station
Dover Transportation Center
Exeter station
Flight Path Map
This map shows the direct air route between Portsmouth and Dover. Straight-line distance: 10.19 mi (16.4 km).
#1 Portsmouth
City in Rockingham County, New Hampshire, United States
| Population | 21,557 |
| Coordinates | 43.0770400, -70.7576600 |
| Altitude | 6 |
| Country | United States |
#2 Dover
County seat city in Strafford County, New Hampshire, United States
| Population | 32,443 |
| Coordinates | 43.1978600, -70.8736700 |
| Altitude | 19 |
| Country | United States |
End: (-70.873668, 43.197876)
Estimated Travel Time
Distance: 20 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 24m |
| 40 mph (64.37 km/h) | 00h 18m |
| 50 mph (80.47 km/h) | 00h 14m |
| 60 mph (96.56 km/h) | 00h 12m |
| 70 mph (112.65 km/h) | 00h 10m |
| 80 mph (129 km/h) | 00h 09m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $1.70 | $3.39 |
| Mid-grade | $4.46 | $1.92 | $3.83 |
| Premium | $4.86 | $2.09 | $4.18 |
| Diesel | $6.00 | $2.58 | $5.16 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in New Hampshire · May 02, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.