How far is Merrimack, NH from Charlestown, NH?
The driving distance from Merrimack, NH to Charlestown, NH is about 90.7 miles (146 km), with a travel time of about 02h 06m by car.
- The straight-line flight distance is about 53.6 miles (86.3 km).
- For a round trip, plan for roughly 04h 13m 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 06m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Human settlement in Merrimack County, New Hampshire, United States of America
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 Merrimack and Charlestown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Merrimack and Charlestown.
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1
Start on Loop Road
25 m · 6 sec · Loop Road
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2
Turn straight onto Daniel Webster Highway
3.8 mi · 8 min · Daniel Webster Highway
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3
Continue on South River Road
2135 ft · 46 sec · South River Road
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4
Take the ramp right toward Concord, Nashua
2141 ft · 52 sec
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5
Merge slight left onto Raymond Wieczorek Drive
653 ft · 11 sec · Raymond Wieczorek Drive
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6
Keep slight right to continue on Bedford, Manchester
1.3 km · 2 min
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7
Merge slight left onto Everett Turnpike
11.2 mi · 15 min · Everett Turnpike
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8
Keep slight left to continue on Everett Turnpike
7 mi · 8 min · Everett Turnpike
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9
Take the exit slight right toward I 89 North: Lebanon, White River Junction Vermont
2720 ft · 1 min
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10
Keep slight right to continue on I 89 North: Lebanon, White River Junction Vermont
1236 ft · 43 sec
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11
Merge slight left
34.7 mi · 41 min
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12
Take the exit slight right toward NH 11 West: New London, Sunapee, Newport, Claremont
1305 ft · 32 sec
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13
Keep slight left to continue on NH 11 West: New London, Sunapee, Newport, Claremont
47 m · 11 sec
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14
Continue straight
10.5 mi · 20 min
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15
Turn left onto Cross Street
915 ft · 43 sec · Cross Street
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16
At the end of the road, turn right onto Maple Street
1358 ft · 39 sec · Maple Street
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17
Continue on Elm Street
946 ft · 12 sec · Elm Street
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18
Continue on John Stark Highway
4.6 mi · 5 min · John Stark Highway
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19
Continue on State Route 11
2.3 mi · 3 min · State Route 11
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20
Continue on Washington Street
2.3 mi · 3 min · Washington Street
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21
Continue on Broad Street
576 ft · 10 sec · Broad Street
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22
Turn right onto Tremont Street
141 m · 6 sec · Tremont Street
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23
Keep slight left to continue on Opera House Square
18 m · 6 sec · Opera House Square
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24
Turn left onto Pleasant Street
1.5 km · 1 min · Pleasant Street
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25
Continue on Charlestown Road
2.1 mi · 3 min · Charlestown Road
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26
Continue on Claremont Road
7.4 mi · 11 min · Claremont Road
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27
Continue on North Main Street
963 ft · 20 sec · North Main Street
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28
Turn left onto Sullivan Street
44 m · 7 sec · Sullivan Street
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29
Continue on Sullivan Street
28 m · 3 sec · Sullivan Street
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30
Arrive at your destination
0 m · 1 sec · Sullivan Street
Car Route Details
A richer read on the saved driving route between Merrimack 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.
Mostly Sunny leaving Merrimack 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 Merrimack to Charlestown?
The road trip is about 90.7 miles (146 km) and usually takes 02h 06m 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?
Warner is a useful midpoint, sitting about 45.3 miles from Merrimack and 45.4 miles from Charlestown.
How much longer is the road route than the straight-line distance?
The direct path is about 53.6 miles (86.3 km), while the road route adds roughly 37.1 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 2:16 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $12.62 one way or $25.25 round trip. Estimated CO2 is about 28.4 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Merrimack and Mostly Sunny near Charlestown.
Stop Ideas Near Warner
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 Warner.
Concord, New Hampshire
Tilton, New Hampshire
New Hampton, New Hampshire
Manchester, New Hampshire
Flight Path Map
This map shows the direct air route between Merrimack and Charlestown. Straight-line distance: 53.63 mi (86.31 km).
#1 Merrimack
River in New Hampshire and Massachusetts, United States
| Population | 27,452 |
| Coordinates | 42.8650900, -71.4934000 |
| Altitude | 47 |
| 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: 146 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 01m |
| 40 mph (64.37 km/h) | 02h 16m |
| 50 mph (80.47 km/h) | 01h 48m |
| 60 mph (96.56 km/h) | 01h 30m |
| 70 mph (112.65 km/h) | 01h 17m |
| 80 mph (129 km/h) | 01h 07m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $12.62 | $25.25 |
| Mid-grade | $4.46 | $14.26 | $28.52 |
| Premium | $4.86 | $15.55 | $31.09 |
| Diesel | $6.00 | $19.19 | $38.38 |
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 02, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.