How far is Portsmouth, NH from Belmont, NH?
The driving distance from Portsmouth, NH to Belmont, NH is about 54.4 miles (87.6 km), with a travel time of about 01h 26m by car.
- The straight-line flight distance is about 44.3 miles (71.3 km).
- For a round trip, plan for roughly 02h 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 01h 26m.
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 Strafford County, New Hampshire, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Portsmouth and Belmont.
Turn-by-Turn Driving Directions
Step-by-step road directions between Portsmouth and Belmont.
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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
20 mi · 26 min · Spaulding Turnpike
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9
Take the exit slight right toward NH 11 West: Farmington, Alton
1684 ft · 59 sec
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10
Turn left onto Farmington Road
2.3 mi · 4 min · Farmington Road
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11
Continue on NH Route 11
6.1 mi · 9 min · NH Route 11
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12
Continue on Henry Wilson Highway
6.2 mi · 9 min · Henry Wilson Highway
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13
Enter the roundabout and take exit 3 toward the route
797 ft · 23 sec
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14
Exit the roundabout
3023 ft · 2 min
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15
Turn left onto Factory Street
2617 ft · 1 min · Factory Street
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16
Continue on Frank C. Gilman Highway
3.7 mi · 7 min · Frank C. Gilman Highway
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17
Continue on New Hampshire Route 140
10 mi · 18 min · New Hampshire Route 140
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18
Continue on Gilmanton Road
1.9 mi · 3 min · Gilmanton Road
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19
Continue on State Route 140
1052 ft · 32 sec · State Route 140
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20
Arrive at your destination
0 m · 1 sec · State Route 140
Car Route Details
A richer read on the saved driving route between Portsmouth and Belmont.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Spaulding Turnpike
Merge slight left onto Spaulding Turnpike
20 mi · 00h 26m
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.
Mostly Sunny leaving Portsmouth and Mostly Sunny near Belmont.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Portsmouth to Belmont?
The road trip is about 54.4 miles (87.6 km) and usually takes 01h 26m 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?
Farmington is a useful midpoint, sitting about 27.2 miles from Portsmouth and 27.3 miles from Belmont.
How much longer is the road route than the straight-line distance?
The direct path is about 44.3 miles (71.3 km), while the road route adds roughly 10.1 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 3:36 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $8.24 one way or $16.49 round trip. Estimated CO2 is about 17.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Portsmouth and Mostly Sunny near Belmont.
Stop Ideas Near Farmington
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 Farmington.
Dover Transportation Center
Durham–UNH station
Wells Regional Transportation Center
Tilton, New Hampshire
Flight Path Map
This map shows the direct air route between Portsmouth and Belmont. Straight-line distance: 44.28 mi (71.26 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 Belmont
Town in New Hampshire, United States
| Population | 7,314 |
| Coordinates | 43.4453600, -71.4778500 |
| Altitude | 167 |
| Country | United States |
End: Belmont (-71.47785, 43.44536)
Estimated Travel Time
Distance: 88 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 48m |
| 40 mph (64.37 km/h) | 01h 21m |
| 50 mph (80.47 km/h) | 01h 05m |
| 60 mph (96.56 km/h) | 00h 54m |
| 70 mph (112.65 km/h) | 00h 46m |
| 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 | $4.29 | $8.24 | $16.49 |
| Mid-grade | $4.88 | $9.38 | $18.75 |
| Premium | $5.34 | $10.25 | $20.49 |
| Diesel | $6.35 | $12.20 | $24.39 |
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 · Oct 15, 2026