How far is Plymouth, NH from Merrimack, NH?
The driving distance from Plymouth, NH to Merrimack, NH is about 69.1 miles (111.2 km), with a travel time of about 01h 07m by car.
- The straight-line flight distance is about 62.4 miles (100.4 km).
- For a round trip, plan for roughly 02h 15m 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 07m.
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.
Slight Chance Snow Showers
Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Plymouth and Merrimack.
Turn-by-Turn Driving Directions
Step-by-step road directions between Plymouth and Merrimack.
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1
Start on Main Street
1087 ft · 36 sec · Main Street
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2
Enter the roundabout and take exit 1 toward Holderness Road
10 m · 3 sec · Holderness Road
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3
Exit the roundabout onto Holderness Road
118 m · 21 sec · Holderness Road
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4
Continue on NH Route 175A
1964 ft · 54 sec · NH Route 175A
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5
Take the ramp right toward I 93 South
1492 ft · 36 sec
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6
Merge slight left onto Styles Bridges Highway
25.4 mi · 27 min · Styles Bridges Highway
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7
Continue on Senator Styles Bridges Highway
15.4 mi · 18 min · Senator Styles Bridges Highway
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8
Continue on Styles Bridges Highway
1.2 km · 1 min · Styles Bridges Highway
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9
Continue on Everett Turnpike
8.9 mi · 11 min · Everett Turnpike
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10
Keep slight left to continue on Everett Turnpike
2 mi · 2 min · Everett Turnpike
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11
Keep slight left to continue on Everett Turnpike
8.2 mi · 11 min · Everett Turnpike
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12
Keep slight left to continue on Everett Turnpike
2.4 mi · 3 min · Everett Turnpike
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13
Take the exit slight right toward Airport
1.3 km · 1 min
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14
Keep slight right to continue on Merrimack
1425 ft · 38 sec
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15
Turn right onto South River Road
704 ft · 13 sec · South River Road
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16
Continue on Daniel Webster Highway
3.8 mi · 8 min · Daniel Webster Highway
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17
Turn slight left onto Loop Road
25 m · 4 sec · Loop Road
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18
Arrive at your destination
0 m · 1 sec · Loop Road
Car Route Details
A richer read on the saved driving route between Plymouth 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.
Styles Bridges Highway
Merge slight left onto Styles Bridges Highway
25.4 mi · 00h 27m
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.
Slight Chance Snow Showers leaving Plymouth and Slight Chance Rain Showers near Merrimack.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Plymouth to Merrimack?
The road trip is about 69.1 miles (111.2 km) and usually takes 01h 07m 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?
Boscawen is a useful midpoint, sitting about 34.5 miles from Plymouth and 34.6 miles from Merrimack.
How much longer is the road route than the straight-line distance?
The direct path is about 62.4 miles (100.4 km), while the road route adds roughly 6.7 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 4:14 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $9.63 one way or $19.25 round trip. Estimated CO2 is about 21.7 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Snow Showers around Plymouth and Slight Chance Rain Showers near Merrimack.
Stop Ideas Near Boscawen
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 Boscawen.
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Tilton, New Hampshire
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Manchester, New Hampshire
Flight Path Map
This map shows the direct air route between Plymouth and Merrimack. Straight-line distance: 62.4 mi (100.42 km).
#1 Plymouth
Town in New Hampshire
| Population | 6,916 |
| Coordinates | 43.7570200, -71.6881300 |
| Altitude | 157 |
| 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: 111 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 18m |
| 40 mph (64.37 km/h) | 01h 43m |
| 50 mph (80.47 km/h) | 01h 22m |
| 60 mph (96.56 km/h) | 01h 09m |
| 70 mph (112.65 km/h) | 00h 59m |
| 80 mph (129 km/h) | 00h 51m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $9.63 | $19.25 |
| Mid-grade | $4.46 | $10.88 | $21.75 |
| Premium | $4.86 | $11.85 | $23.71 |
| Diesel | $6.00 | $14.63 | $29.27 |
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.