How far is Portsmouth, NH from Charlestown, NH?
The driving distance from Portsmouth, NH to Charlestown, NH is about 122.7 miles (197.4 km), with a travel time of about 02h 40m by car.
- The straight-line flight distance is about 84.8 miles (136.4 km).
- For a round trip, plan for roughly 05h 21m 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 40m.
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 Merrimack County, New Hampshire
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers then Partly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Portsmouth and Charlestown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Portsmouth and Charlestown.
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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 · 25 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
8.8 mi · 11 min
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7
Take the exit slight right toward NH 101: Hampton, Manchester
3185 ft · 1 min
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8
Keep slight right to continue on 101 West: Manchester, Concord, Exeter
2083 ft · 51 sec
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9
Merge slight left onto Exeter-Hampton Expressway
30.4 mi · 35 min · Exeter-Hampton Expressway
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10
Take the exit slight right toward I 93 North: Concord
2480 ft · 38 sec
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11
Merge slight left
6.4 mi · 8 min
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12
Keep slight left to continue on Everett Turnpike
7 mi · 8 min · Everett Turnpike
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13
Take the exit slight right toward I 89 North: Lebanon, White River Junction Vermont
2720 ft · 1 min
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14
Keep slight right to continue on I 89 North: Lebanon, White River Junction Vermont
1236 ft · 42 sec
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15
Merge slight left
34.7 mi · 41 min
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16
Take the exit slight right toward NH 11 West: New London, Sunapee, Newport, Claremont
1305 ft · 32 sec
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17
Keep slight left to continue on NH 11 West: New London, Sunapee, Newport, Claremont
47 m · 9 sec
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18
Continue straight
10.5 mi · 20 min
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19
Turn left onto Cross Street
915 ft · 41 sec · Cross Street
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20
At the end of the road, turn right onto Maple Street
1358 ft · 39 sec · Maple Street
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21
Continue on Elm Street
946 ft · 12 sec · Elm Street
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22
Continue on John Stark Highway
4.6 mi · 5 min · John Stark Highway
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23
Continue on State Route 11
2.3 mi · 3 min · State Route 11
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24
Continue on Washington Street
2.3 mi · 3 min · Washington Street
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25
Continue on Broad Street
576 ft · 10 sec · Broad Street
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26
Turn right onto Tremont Street
141 m · 6 sec · Tremont Street
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27
Keep slight left to continue on Opera House Square
18 m · 6 sec · Opera House Square
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28
Turn left onto Pleasant Street
1.5 km · 1 min · Pleasant Street
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29
Continue on Charlestown Road
2.1 mi · 3 min · Charlestown Road
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30
Continue on Claremont Road
7.4 mi · 11 min · Claremont Road
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31
Continue on North Main Street
963 ft · 20 sec · North Main Street
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32
Turn left onto Sullivan Street
44 m · 7 sec · Sullivan Street
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33
Continue on Sullivan Street
28 m · 3 sec · Sullivan Street
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34
Arrive at your destination
0 m · 1 sec · Sullivan Street
Car Route Details
A richer read on the saved driving route between Portsmouth and Charlestown.
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 89 North
Merge slight left
34.7 mi · 00h 41m
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.
Slight Chance Rain Showers then Partly Sunny leaving Portsmouth and Mostly Sunny near Charlestown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Portsmouth to Charlestown?
The road trip is about 122.7 miles (197.4 km) and usually takes 02h 40m 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?
Hopkinton is a useful midpoint, sitting about 61.3 miles from Portsmouth and 61.4 miles from Charlestown.
How much longer is the road route than the straight-line distance?
The direct path is about 84.8 miles (136.4 km), while the road route adds roughly 37.9 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 1:08 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $17.08 one way or $34.16 round trip. Estimated CO2 is about 38.5 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers then Partly Sunny around Portsmouth and Mostly Sunny near Charlestown.
Stop Ideas Near Hopkinton
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 Hopkinton.
Concord, New Hampshire
Manchester, New Hampshire
Tilton, New Hampshire
Nashua, NH
Flight Path Map
This map shows the direct air route between Portsmouth and Charlestown. Straight-line distance: 84.75 mi (136.39 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 Charlestown
Town in New Hampshire
| Population | 5,032 |
| Coordinates | 43.2386900, -72.4245300 |
| Altitude | 119 |
| Country | United States |
End: Charlestown (-72.42453, 43.23869)
Estimated Travel Time
Distance: 197 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 05m |
| 40 mph (64.37 km/h) | 03h 03m |
| 50 mph (80.47 km/h) | 02h 27m |
| 60 mph (96.56 km/h) | 02h 02m |
| 70 mph (112.65 km/h) | 01h 45m |
| 80 mph (129 km/h) | 01h 31m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $17.08 | $34.16 |
| Mid-grade | $4.46 | $19.30 | $38.60 |
| Premium | $4.86 | $21.04 | $42.07 |
| Diesel | $6.00 | $25.97 | $51.93 |
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.