How far is Plaistow, NH from Merrimack, NH?
The driving distance from Plaistow, NH to Merrimack, NH is about 41.6 miles (66.9 km), with a travel time of about 00h 48m by car.
- The straight-line flight distance is about 20.3 miles (32.7 km).
- For a round trip, plan for roughly 01h 36m 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 00h 48m.
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.
City in New Hampshire
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Plaistow and Merrimack.
Turn-by-Turn Driving Directions
Step-by-step road directions between Plaistow and Merrimack.
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1
Start on Main Street
1.7 mi · 3 min · Main Street
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2
Turn slight right onto Hazeltine Street
113 m · 18 sec · Hazeltine Street
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3
Turn left onto Plaistow Road
1853 ft · 1 min · Plaistow Road
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4
At the end of the road, turn left onto Main Street
1.2 km · 2 min · Main Street
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5
Take the exit slight right toward I 495 South: Lawrence, Lowell
1856 ft · 45 sec
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6
Merge slight left
4.5 mi · 5 min
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7
Take the exit slight right toward MA 213: Methuen, Salem New Hampshire, Manchester-Boston Regional Airport
1302 ft · 37 sec
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8
Continue on Loop Connector
3.3 mi · 4 min · Loop Connector
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9
Take the exit slight right toward I 93 North: Concord New Hampshire
1920 ft · 37 sec
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10
Merge slight right
1.7 mi · 2 min
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11
Continue straight
13.5 mi · 16 min
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12
Take the exit slight right toward NH 28: North Londonderry
1573 ft · 38 sec
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13
Keep slight left
86 m · 9 sec
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14
Turn left onto Rockingham Road
2.2 mi · 4 min · Rockingham Road
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15
Turn left onto Page Road
1079 ft · 30 sec · Page Road
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16
Continue on Grenier Field Road
1.2 km · 2 min · Grenier Field Road
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17
Turn left onto Webster Road
742 ft · 21 sec · Webster Road
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18
Turn left onto Harvey Road
2981 ft · 1 min · Harvey Road
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19
Continue on Pettengill Road
1.1 mi · 3 min · Pettengill Road
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20
Turn left onto Raymond Wieczorek Drive
3081 ft · 59 sec · Raymond Wieczorek Drive
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21
Take the exit slight right toward Merrimack
2171 ft · 55 sec
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22
Turn left onto South River Road
2219 ft · 49 sec · South River Road
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23
Continue on Daniel Webster Highway
3.8 mi · 9 min · Daniel Webster Highway
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24
Turn slight left onto Loop Road
25 m · 4 sec · Loop Road
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25
Arrive at your destination
0 m · 1 sec · Loop Road
Car Route Details
A richer read on the saved driving route between Plaistow 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.
I 93 North
Continue straight
13.5 mi · 00h 16m
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 Plaistow and Sunny near Merrimack.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Plaistow to Merrimack?
The road trip is about 41.6 miles (66.9 km) and usually takes 00h 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?
Windham is a useful midpoint, sitting about 18.6 miles from Plaistow and 23 miles from Merrimack.
How much longer is the road route than the straight-line distance?
The direct path is about 20.3 miles (32.7 km), while the road route adds roughly 21.3 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 4:54 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.80 one way or $11.60 round trip. Estimated CO2 is about 13.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Plaistow and Sunny near Merrimack.
Stop Ideas Near Windham
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 Windham.
Nashua, NH
Haverhill station
Manchester, New Hampshire
Newburyport, Massachusetts
Flight Path Map
This map shows the direct air route between Plaistow and Merrimack. Straight-line distance: 20.29 mi (32.65 km).
#1 Plaistow
Town in New Hampshire
| Population | 7,735 |
| Coordinates | 42.8364800, -71.0947800 |
| Altitude | 31 |
| 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: 67 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 23m |
| 40 mph (64.37 km/h) | 01h 02m |
| 50 mph (80.47 km/h) | 00h 49m |
| 60 mph (96.56 km/h) | 00h 41m |
| 70 mph (112.65 km/h) | 00h 35m |
| 80 mph (129 km/h) | 00h 31m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $5.80 | $11.60 |
| Mid-grade | $4.46 | $6.55 | $13.10 |
| Premium | $4.86 | $7.14 | $14.28 |
| Diesel | $6.00 | $8.82 | $17.63 |
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 12, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.