How far is Plainfield, NH from Merrimack, NH?
The driving distance from Plainfield, NH to Merrimack, NH is about 91.7 miles (147.5 km), with a travel time of about 01h 36m by car.
- The straight-line flight distance is about 63.4 miles (102.1 km).
- For a round trip, plan for roughly 03h 12m 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 36m.
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 New Hampshire
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 Plainfield and Merrimack.
Turn-by-Turn Driving Directions
Step-by-step road directions between Plainfield and Merrimack.
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1
Start on Route 12A
7.6 mi · 15 min · Route 12A
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2
Take the ramp right
1423 ft · 35 sec
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3
Merge slight left
59.9 mi · 1 hr 10 min
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4
Take the exit slight right toward I 93 South Toll: Manchester, Boston
1 km · 1 min
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5
Merge slight right onto Everett Turnpike
5.7 mi · 7 min · Everett Turnpike
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6
Keep slight left to continue on Everett Turnpike
2 mi · 2 min · Everett Turnpike
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7
Keep slight left to continue on Everett Turnpike
8.2 mi · 11 min · Everett Turnpike
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8
Keep slight left to continue on Everett Turnpike
2.4 mi · 3 min · Everett Turnpike
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9
Take the exit slight right toward Airport
1.3 km · 1 min
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10
Keep slight right to continue on Merrimack
1425 ft · 38 sec
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11
Turn right onto South River Road
704 ft · 13 sec · South River Road
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12
Continue on Daniel Webster Highway
3.8 mi · 8 min · Daniel Webster Highway
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13
Turn slight left onto Loop Road
25 m · 4 sec · Loop Road
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14
Arrive at your destination
0 m · 1 sec · Loop Road
Car Route Details
A richer read on the saved driving route between Plainfield and Merrimack.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Route 12A
Merge slight left
59.9 mi · 01h 10m
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 Plainfield 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 Plainfield to Merrimack?
The road trip is about 91.7 miles (147.5 km) and usually takes 01h 36m 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?
Newmarket is a useful midpoint, sitting about 45.8 miles from Plainfield and 45.9 miles from Merrimack.
How much longer is the road route than the straight-line distance?
The direct path is about 63.4 miles (102.1 km), while the road route adds roughly 28.3 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 3:18 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $12.74 one way or $25.48 round trip. Estimated CO2 is about 28.7 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Plainfield and Mostly Sunny near Merrimack.
Stop Ideas Near Newmarket
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 Newmarket.
Concord, New Hampshire
Tilton, New Hampshire
Claremont
New Hampton, New Hampshire
Flight Path Map
This map shows the direct air route between Plainfield and Merrimack. Straight-line distance: 63.45 mi (102.11 km).
#1 Plainfield
Town in Sullivan County, New Hampshire, United States
| Population | 2,419 |
| Coordinates | 43.5342400, -72.3562000 |
| Altitude | 159 |
| 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: 148 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 03m |
| 40 mph (64.37 km/h) | 02h 17m |
| 50 mph (80.47 km/h) | 01h 49m |
| 60 mph (96.56 km/h) | 01h 31m |
| 70 mph (112.65 km/h) | 01h 18m |
| 80 mph (129 km/h) | 01h 08m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $12.74 | $25.48 |
| Mid-grade | $4.46 | $14.40 | $28.79 |
| Premium | $4.86 | $15.69 | $31.38 |
| Diesel | $6.00 | $19.37 | $38.74 |
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.