How far is Portsmouth, NH from Durham, NH?
The driving distance from Portsmouth, NH to Durham, NH is about 11.9 miles (19.2 km), with a travel time of about 00h 23m by car.
- The straight-line flight distance is about 9.4 miles (15.1 km).
- For a round trip, plan for roughly 00h 46m 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 23m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
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.
Slight Chance Rain Showers then Partly Sunny
Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Portsmouth and Durham.
Turn-by-Turn Driving Directions
Step-by-step road directions between Portsmouth and Durham.
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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
3.8 mi · 5 min · Spaulding Turnpike
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9
Take the exit slight right toward US 4: Dover Point Road, Durham-UNH, Concord
1594 ft · 39 sec
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10
Keep slight left to continue on US 4: Durham-UNH, Concord
72 m · 8 sec
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11
Turn left
1833 ft · 52 sec
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12
Enter the roundabout and take exit 2 toward Boston Harbor Road
37 m · 3 sec · Boston Harbor Road
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13
Exit the roundabout onto Boston Harbor Road
811 ft · 22 sec · Boston Harbor Road
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14
Continue on Scammell Bridge
1132 ft · 28 sec · Scammell Bridge
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15
Continue on Piscataqua Road
3 mi · 5 min · Piscataqua Road
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16
Take the exit slight right toward NH 108: Durham, Dover
939 ft · 41 sec
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17
Turn left onto Dover Road
1.1 km · 2 min · Dover Road
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18
Continue on Main Street
1033 ft · 29 sec · Main Street
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19
Continue on Madbury Road
149 m · 17 sec · Madbury Road
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20
Keep slight left to continue on Pettee Brook Lane
1092 ft · 37 sec · Pettee Brook Lane
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21
Continue on Pettee Brook Lane
46 m · 5 sec · Pettee Brook Lane
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22
Turn straight onto Main Street
560 ft · 19 sec · Main Street
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23
Turn right onto Mill Road
61 m · 14 sec · Mill Road
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24
Continue on Mill Road
33 m · 4 sec · Mill Road
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25
Arrive at your destination
0 m · 1 sec · Mill Road
Car Route Details
A richer read on the saved driving route between Portsmouth and Durham.
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
3.8 mi · 00h 05m
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.
Slight Chance Rain Showers then Partly Sunny leaving Portsmouth and Slight Chance Rain Showers near Durham.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Portsmouth to Durham?
The road trip is about 11.9 miles (19.2 km) and usually takes 00h 23m 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 miles from Portsmouth and 6 miles from Durham.
How much longer is the road route than the straight-line distance?
The direct path is about 9.4 miles (15.1 km), while the road route adds roughly 2.5 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 7:44 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $1.66 one way or $3.31 round trip. Estimated CO2 is about 3.7 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers then Partly Sunny around Portsmouth and Slight Chance Rain Showers near Durham.
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 Durham. Straight-line distance: 9.38 mi (15.09 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 Durham
Town in New Hampshire
| Population | 16,441 |
| Coordinates | 43.1339700, -70.9264500 |
| Altitude | 15 |
| Country | United States |
End: Durham (-70.92645, 43.13397)
Estimated Travel Time
Distance: 19 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 23m |
| 40 mph (64.37 km/h) | 00h 17m |
| 50 mph (80.47 km/h) | 00h 14m |
| 60 mph (96.56 km/h) | 00h 11m |
| 70 mph (112.65 km/h) | 00h 10m |
| 80 mph (129 km/h) | 00h 08m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $1.66 | $3.31 |
| Mid-grade | $4.46 | $1.87 | $3.74 |
| Premium | $4.86 | $2.04 | $4.08 |
| Diesel | $6.00 | $2.52 | $5.04 |
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 · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.