How far is Portsmouth, NH from Swanzey, NH?
The driving distance from Portsmouth, NH to Swanzey, NH is about 119.4 miles (192.1 km), with a travel time of about 02h 30m by car.
- The straight-line flight distance is about 78.4 miles (126.1 km).
- For a round trip, plan for roughly 05h 00m 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 02h 30m.
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 Oklahoma
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 Swanzey.
Turn-by-Turn Driving Directions
Step-by-step road directions between Portsmouth and Swanzey.
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1
Start on Congress Street
124 m · 15 sec · Congress Street
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2
Turn right onto Fleet Street
141 m · 17 sec · Fleet Street
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3
Turn right onto Hanover Street
662 ft · 27 sec · Hanover Street
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4
At the end of the road, turn left onto Market Street
1 mi · 3 min · Market Street
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5
Take the ramp left toward I 95 South: Hampton, Boston
1468 ft · 36 sec
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6
Merge slight left
9 mi · 11 min
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7
Keep slight left to continue on Blue Star Turnpike
7.7 mi · 9 min · Blue Star Turnpike
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8
Keep slight right to continue on I 495 South: Worcester
30.6 mi · 36 min
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9
Take the exit slight right toward US 3: Burlington, Nashua New Hampshire
1068 ft · 14 sec
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10
Keep slight left to continue on US 3: Burlington, Nashua New Hampshire
1320 ft · 17 sec
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11
Keep slight left
1931 ft · 25 sec
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12
Keep slight left to continue on I 495 South: Marlboro
2589 ft · 34 sec
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13
Merge slight left
10.7 mi · 12 min
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14
Take the exit slight right toward MA 2 West: Leominster
2255 ft · 1 min
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15
Merge slight left onto Captain Isaac Davis Highway
10.9 mi · 15 min · Captain Isaac Davis Highway
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16
Keep slight left to continue on Concord Turnpike
12.2 mi · 17 min · Concord Turnpike
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17
Take the exit slight right toward MA 140 North: Winchendon
1527 ft · 43 sec
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18
Merge slight left onto West Main Street
6.1 mi · 8 min · West Main Street
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19
Continue on Gardner Road
3.4 mi · 4 min · Gardner Road
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20
Continue on Spring Street
2.3 mi · 3 min · Spring Street
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21
Continue on Front Street
1027 ft · 21 sec · Front Street
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22
Continue on School Street
3 mi · 3 min · School Street
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23
Continue on State Route 12
2.9 mi · 3 min · State Route 12
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24
Continue on NH Route 12 South
5.1 mi · 6 min · NH Route 12 South
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25
Continue on Fitzwilliam Road
1.2 mi · 1 min · Fitzwilliam Road
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26
Continue on South Main Street
1109 ft · 14 sec · South Main Street
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27
Continue on Central Square
544 ft · 7 sec · Central Square
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28
Continue on North Main Street
2.6 mi · 3 min · North Main Street
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29
Continue on NH Route 12
1.5 mi · 2 min · NH Route 12
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30
Continue on Monadnock Highway
3.1 mi · 4 min · Monadnock Highway
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31
Enter the roundabout and take exit 3 toward Lake Street
55 m · 2 sec · Lake Street
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32
Exit the roundabout onto Lake Street
1980 ft · 55 sec · Lake Street
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33
Turn left onto Old Homestead Highway
2.5 mi · 4 min · Old Homestead Highway
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34
Enter the roundabout and take exit 2 toward Old Homestead Highway
53 m · 4 sec · Old Homestead Highway
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35
Exit the roundabout onto Old Homestead Highway
1572 ft · 31 sec · Old Homestead Highway
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36
Arrive at your destination
0 m · 1 sec · Old Homestead Highway
Car Route Details
A richer read on the saved driving route between Portsmouth and Swanzey.
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 South
Keep slight right to continue on I 495 South: Worcester
30.6 mi · 00h 36m
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 Swanzey.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Portsmouth to Swanzey?
The road trip is about 119.4 miles (192.1 km) and usually takes 02h 30m 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?
Hollis is a useful midpoint, sitting about 59.6 miles from Portsmouth and 59.8 miles from Swanzey.
How much longer is the road route than the straight-line distance?
The direct path is about 78.4 miles (126.1 km), while the road route adds roughly 41 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 1:30 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $18.08 one way or $36.16 round trip. Estimated CO2 is about 37.4 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Portsmouth and Mostly Sunny near Swanzey.
Stop Ideas Near Hollis
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 Hollis.
Nashua, NH
Manchester, New Hampshire
Haverhill station
Anderson Regional Transportation Center
Flight Path Map
This map shows the direct air route between Portsmouth and Swanzey. Straight-line distance: 78.37 mi (126.12 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 Swanzey
City in Cheshire County, New Hampshire, United States of America
| Population | 7,271 |
| Coordinates | 42.8698000, -72.2817500 |
| Altitude | 149 |
| Country | United States |
End: Swanzey (-72.28175, 42.8698)
Estimated Travel Time
Distance: 192 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 58m |
| 40 mph (64.37 km/h) | 02h 59m |
| 50 mph (80.47 km/h) | 02h 23m |
| 60 mph (96.56 km/h) | 01h 59m |
| 70 mph (112.65 km/h) | 01h 42m |
| 80 mph (129 km/h) | 01h 29m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.29 | $18.08 | $36.16 |
| Mid-grade | $4.88 | $20.56 | $41.12 |
| Premium | $5.34 | $22.47 | $44.94 |
| Diesel | $6.35 | $26.74 | $53.48 |
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