How far is Charlestown, NH from Merrimack, NH?
The driving distance from Charlestown, NH to Merrimack, NH is about 90.2 miles (145.1 km), with a travel time of about 01h 48m by car.
- The straight-line flight distance is about 53.6 miles (86.3 km).
- For a round trip, plan for roughly 03h 37m 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 48m.
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 Charlestown and Merrimack.
Turn-by-Turn Driving Directions
Step-by-step road directions between Charlestown and Merrimack.
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1
Start on Sullivan Street
28 m · 3 sec · Sullivan Street
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2
Continue on Sullivan Street
44 m · 7 sec · Sullivan Street
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3
Turn right onto North Main Street
963 ft · 16 sec · North Main Street
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4
Continue on Claremont Road
7.4 mi · 11 min · Claremont Road
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5
Continue on Charlestown Road
2.1 mi · 3 min · Charlestown Road
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6
Continue on West Pleasant Street
1.3 km · 1 min · West Pleasant Street
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7
Turn right onto Glidden Street
631 ft · 29 sec · Glidden Street
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8
At the end of the road, turn left onto Broad Street
158 m · 13 sec · Broad Street
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9
Keep slight right to continue on Broad Street
867 ft · 15 sec · Broad Street
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10
Continue on Washington Street
2.3 mi · 3 min · Washington Street
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11
Continue on State Route 11
2.3 mi · 3 min · State Route 11
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12
Continue on John Stark Highway
4.6 mi · 5 min · John Stark Highway
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13
Continue on Elm Street
946 ft · 14 sec · Elm Street
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14
Continue on Maple Street
1358 ft · 41 sec · Maple Street
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15
Turn left onto Cross Street
144 m · 21 sec · Cross Street
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16
Turn right onto Canal Street
554 ft · 26 sec · Canal Street
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17
Turn right onto Sunapee Street
2.8 mi · 6 min · Sunapee Street
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18
Turn straight onto State Route 11
2.5 mi · 4 min · State Route 11
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19
Continue on Route 11
2097 ft · 60 sec · Route 11
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20
Continue on State Route 11
4.7 mi · 8 min · State Route 11
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21
Take the exit slight right
32.3 mi · 37 min
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22
Continue straight
2.6 mi · 3 min
-
23
Take the exit slight right toward I 93 South Toll: Manchester, Boston
1 km · 1 min
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24
Merge slight right onto Everett Turnpike
5.7 mi · 7 min · Everett Turnpike
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25
Keep slight left to continue on Everett Turnpike
2 mi · 2 min · Everett Turnpike
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26
Keep slight left to continue on Everett Turnpike
8.2 mi · 11 min · Everett Turnpike
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27
Keep slight left to continue on Everett Turnpike
2.4 mi · 3 min · Everett Turnpike
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28
Take the exit slight right toward Airport
1.3 km · 1 min
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29
Keep slight right to continue on Merrimack
1425 ft · 38 sec
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30
Turn right onto South River Road
704 ft · 13 sec · South River Road
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31
Continue on Daniel Webster Highway
3.8 mi · 8 min · Daniel Webster Highway
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32
Turn slight left onto Loop Road
25 m · 4 sec · Loop Road
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33
Arrive at your destination
0 m · 1 sec · Loop Road
Car Route Details
A richer read on the saved driving route between Charlestown and Merrimack.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
State Route 11
Take the exit slight right
32.3 mi · 00h 37m
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 Charlestown and Mostly Sunny near Merrimack.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Charlestown to Merrimack?
The road trip is about 90.2 miles (145.1 km) and usually takes 01h 48m 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 44.9 miles from Charlestown and 45.3 miles from Merrimack.
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 36.6 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 2:52 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $12.55 one way or $25.09 round trip. Estimated CO2 is about 28.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Charlestown and Mostly Sunny near Merrimack.
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 Charlestown and Merrimack. Straight-line distance: 53.63 mi (86.31 km).
#1 Charlestown
Town in New Hampshire
| Population | 5,032 |
| Coordinates | 43.2386900, -72.4245300 |
| Altitude | 119 |
| Country | United States |
#2 Merrimack
River in New Hampshire and Massachusetts, United States
| Population | 27,452 |
| Coordinates | 42.8650900, -71.4934000 |
| Altitude | 47 |
| Country | United States |
End: (-71.493333, 42.865106)
Estimated Travel Time
Distance: 145 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 00m |
| 40 mph (64.37 km/h) | 02h 15m |
| 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 | $12.55 | $25.09 |
| Mid-grade | $4.46 | $14.17 | $28.35 |
| Premium | $4.86 | $15.45 | $30.90 |
| Diesel | $6.00 | $19.07 | $38.14 |
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.