How far is Londonderry, NH from Portsmouth, NH?
The driving distance from Londonderry, NH to Portsmouth, NH is about 53.6 miles (86.2 km), with a travel time of about 00h 56m by car.
- The straight-line flight distance is about 34.4 miles (55.4 km).
- For a round trip, plan for roughly 01h 53m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 56m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
Mostly Clear
Driving Route Map
The map below follows the saved road route between Londonderry and Portsmouth.
Turn-by-Turn Driving Directions
Step-by-step road directions between Londonderry and Portsmouth.
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1
Start on Mammoth Road
23 m · 9 sec · Mammoth Road
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2
Turn left onto Pillsbury Road
1 mi · 2 min · Pillsbury Road
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3
At the end of the road, turn right onto Pillsbury Road
787 ft · 19 sec · Pillsbury Road
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4
Continue on Gilcreast Road
1.2 km · 2 min · Gilcreast Road
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5
Turn left onto Nashua Road
1230 ft · 37 sec · Nashua Road
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6
Take the ramp slight right toward I 93 South
2700 ft · 1 min
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7
Merge slight left onto Alan Bartlett Shepard Junior Highway
11.6 mi · 13 min · Alan Bartlett Shepard Junior Highway
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8
Take the exit slight right toward MA 213 East: Methuen, Haverhill
1938 ft · 42 sec
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9
Merge slight left onto Loop Connector
76 m · 5 sec · Loop Connector
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10
Continue on Loop Connector
3.5 mi · 5 min · Loop Connector
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11
Keep slight left to continue on I 495 North: Haverhill, Salisbury
2822 ft · 1 min
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12
Merge slight left
16.8 mi · 20 min
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13
Merge slight left
6.7 mi · 8 min
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14
Keep slight left to continue on Blue Star Turnpike
7.8 mi · 9 min · Blue Star Turnpike
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15
Keep slight right to continue on Blue Star Turnpike
1.9 mi · 3 min · Blue Star Turnpike
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16
Take the exit slight right
1313 ft · 35 sec
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17
Turn right onto Market Street
1 mi · 3 min · Market Street
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18
At the end of the road, turn right onto Congress Street
16 m · 1 sec · Congress Street
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19
Arrive at your destination
0 m · 1 sec · Congress Street
Car Route Details
A richer read on the saved driving route between Londonderry and Portsmouth.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 495 North
Merge slight left
16.8 mi · 00h 20m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Londonderry and Mostly Clear near Portsmouth.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Londonderry to Portsmouth?
The road trip is about 53.6 miles (86.2 km) and usually takes 00h 56m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Plaistow is a useful midpoint, sitting about 26.6 miles from Londonderry and 27 miles from Portsmouth.
How much longer is the road route than the straight-line distance?
The direct path is about 34.4 miles (55.4 km), while the road route adds roughly 19.2 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 4:36 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.46 one way or $14.91 round trip. Estimated CO2 is about 16.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Londonderry and Mostly Clear near Portsmouth.
Stop Ideas Near Plaistow
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Plaistow.
Haverhill station
Newburyport, Massachusetts
Exeter station
Nashua, NH
Flight Path Map
This map shows the direct air route between Londonderry and Portsmouth. Straight-line distance: 34.42 mi (55.4 km).
#1 Londonderry
Town in Rockingham County, New Hampshire, United States of America
| Population | 26,646 |
| Coordinates | 42.8650900, -71.3739500 |
| Altitude | 128 |
| Country | United States |
#2 Portsmouth
City in Rockingham County, New Hampshire, United States
| Population | 21,557 |
| Coordinates | 43.0770400, -70.7576600 |
| Altitude | 6 |
| Country | United States |
End: Congress Street (-70.757617, 43.077054)
Estimated Travel Time
Distance: 86 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 47m |
| 40 mph (64.37 km/h) | 01h 20m |
| 50 mph (80.47 km/h) | 01h 04m |
| 60 mph (96.56 km/h) | 00h 53m |
| 70 mph (112.65 km/h) | 00h 45m |
| 80 mph (129 km/h) | 00h 40m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $7.46 | $14.91 |
| Mid-grade | $4.46 | $8.42 | $16.85 |
| Premium | $4.86 | $9.18 | $18.36 |
| Diesel | $6.00 | $11.33 | $22.67 |
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 12, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.