How far is Merrimack, NH from Plaistow, NH?
The driving distance from Merrimack, NH to Plaistow, NH is about 37.9 miles (61 km), with a travel time of about 00h 57m by car.
- The straight-line flight distance is about 20.3 miles (32.7 km).
- For a round trip, plan for roughly 01h 55m 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 57m.
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
Driving Route Map
The map below follows the saved road route between Merrimack and Plaistow.
Turn-by-Turn Driving Directions
Step-by-step road directions between Merrimack and Plaistow.
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1
Start on Loop Road
25 m · 4 sec · Loop Road
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2
Turn straight onto Daniel Webster Highway
3.8 mi · 9 min · Daniel Webster Highway
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3
Continue on South River Road
641 ft · 12 sec · South River Road
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4
Take the ramp right toward Airport
1104 ft · 27 sec
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5
Merge slight left onto Raymond Wieczorek Drive
2769 ft · 47 sec · Raymond Wieczorek Drive
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6
Turn right onto Pettengill Road
1.1 mi · 3 min · Pettengill Road
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7
Continue on Harvey Road
3008 ft · 1 min · Harvey Road
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8
Turn right onto Webster Road
742 ft · 23 sec · Webster Road
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9
Turn right onto Grenier Field Road
1.2 km · 2 min · Grenier Field Road
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10
Continue on Page Road
1079 ft · 35 sec · Page Road
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11
Turn right onto Rockingham Road
2.1 mi · 3 min · Rockingham Road
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12
Take the ramp right toward I 93 South
2860 ft · 1 min
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13
Merge slight left onto Alan B Shepard Jr Highway
2809 ft · 37 sec · Alan B Shepard Jr Highway
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14
Continue on Alan Bartlett Shepard Junior Highway
14.6 mi · 17 min · Alan Bartlett Shepard Junior Highway
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15
Take the exit slight right toward MA 213 East: Methuen, Haverhill
1938 ft · 42 sec
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16
Merge slight left onto Loop Connector
76 m · 5 sec · Loop Connector
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17
Continue on Loop Connector
3.5 mi · 5 min · Loop Connector
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18
Keep slight left to continue on I 495 North: Haverhill, Salisbury
2822 ft · 1 min
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19
Merge slight left
4.7 mi · 5 min
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20
Take the exit slight right toward MA 125 South: Haverhill
1697 ft · 48 sec
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21
Turn slight right onto Main Street
1207 ft · 30 sec · Main Street
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22
Turn slight left onto Marsh Avenue
1293 ft · 26 sec · Marsh Avenue
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23
Continue on North Avenue
1.5 mi · 3 min · North Avenue
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24
Turn right onto Main Street
1.3 mi · 2 min · Main Street
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25
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Merrimack and Plaistow.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Alan Bartlett Shepard Junior Highway
Continue on Alan Bartlett Shepard Junior Highway
14.6 mi · 00h 17m
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.
Sunny leaving Merrimack and Mostly Sunny near Plaistow.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Merrimack to Plaistow?
The road trip is about 37.9 miles (61 km) and usually takes 00h 57m 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 19 miles from Merrimack and 19 miles from Plaistow.
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 17.6 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 4:34 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.29 one way or $10.57 round trip. Estimated CO2 is about 11.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Merrimack and Mostly Sunny near Plaistow.
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 Merrimack and Plaistow. Straight-line distance: 20.29 mi (32.65 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 Plaistow
Town in New Hampshire
| Population | 7,735 |
| Coordinates | 42.8364800, -71.0947800 |
| Altitude | 31 |
| Country | United States |
End: Plaistow (-71.09478, 42.83648)
Estimated Travel Time
Distance: 61 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 15m |
| 40 mph (64.37 km/h) | 00h 56m |
| 50 mph (80.47 km/h) | 00h 45m |
| 60 mph (96.56 km/h) | 00h 37m |
| 70 mph (112.65 km/h) | 00h 32m |
| 80 mph (129 km/h) | 00h 28m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $5.29 | $10.57 |
| Mid-grade | $4.46 | $5.97 | $11.94 |
| Premium | $4.86 | $6.51 | $13.02 |
| Diesel | $6.00 | $8.04 | $16.07 |
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.