How far is Merrimack, NH from Allenstown, NH?
The driving distance from Merrimack, NH to Allenstown, NH is about 24.6 miles (39.6 km), with a travel time of about 00h 42m by car.
- The straight-line flight distance is about 20.6 miles (33.2 km).
- For a round trip, plan for roughly 01h 25m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 42m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Census-designated place in Hillsborough County, New Hampshire
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Merrimack and Allenstown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Merrimack and Allenstown.
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1
Start on Loop Road
25 m · 6 sec · Loop Road
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2
Turn straight onto Daniel Webster Highway
3.8 mi · 8 min · Daniel Webster Highway
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3
Continue on South River Road
2135 ft · 46 sec · South River Road
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4
Take the ramp right toward Concord, Nashua
2141 ft · 52 sec
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5
Merge slight left onto Raymond Wieczorek Drive
653 ft · 11 sec · Raymond Wieczorek Drive
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6
Keep slight right to continue on Bedford, Manchester
1.3 km · 2 min
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7
Merge slight left onto Everett Turnpike
11.2 mi · 15 min · Everett Turnpike
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8
Keep slight right to continue on Everett Turnpike
1625 ft · 21 sec · Everett Turnpike
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9
Take the exit slight right toward Hooksett
2590 ft · 1 min
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10
Turn left onto Hackett Hill Road
1333 ft · 39 sec · Hackett Hill Road
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11
Turn left onto West River Road
1787 ft · 44 sec · West River Road
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12
Turn right onto Riverside Street
1560 ft · 1 min · Riverside Street
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13
Turn left onto Main Street
1272 ft · 36 sec · Main Street
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14
Turn straight onto College Park Drive
2508 ft · 1 min · College Park Drive
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15
Turn left onto Hooksett Road
2.2 mi · 4 min · Hooksett Road
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16
Continue on Allenstown Road
1298 ft · 32 sec · Allenstown Road
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17
Turn right onto Pinewood Road
2.8 mi · 5 min · Pinewood Road
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18
Turn right onto Gilbert Road
1066 ft · 40 sec · Gilbert Road
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19
Turn left
21 m · 5 sec
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20
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Merrimack and Allenstown.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Everett Turnpike
Merge slight left onto Everett Turnpike
11.2 mi · 00h 15m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Sunny leaving Merrimack and Sunny near Allenstown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Merrimack to Allenstown?
The road trip is about 24.6 miles (39.6 km) and usually takes 00h 42m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Pinardville is a useful midpoint, sitting about 12.3 miles from Merrimack and 12.3 miles from Allenstown.
How much longer is the road route than the straight-line distance?
The direct path is about 20.6 miles (33.2 km), while the road route adds roughly 4 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 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:04 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.43 one way or $6.86 round trip. Estimated CO2 is about 7.7 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Merrimack and Sunny near Allenstown.
Stop Ideas Near Pinardville
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 Pinardville.
Manchester, New Hampshire
Nashua, NH
Concord, New Hampshire
Haverhill station
Flight Path Map
This map shows the direct air route between Merrimack and Allenstown. Straight-line distance: 20.64 mi (33.22 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 Allenstown
Town in New Hampshire
| Population | 4,488 |
| Coordinates | 43.1567300, -71.4047800 |
| Altitude | - |
| Country | United States |
End: Allenstown (-71.40478, 43.15673)
Estimated Travel Time
Distance: 40 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 49m |
| 40 mph (64.37 km/h) | 00h 36m |
| 50 mph (80.47 km/h) | 00h 29m |
| 60 mph (96.56 km/h) | 00h 24m |
| 70 mph (112.65 km/h) | 00h 21m |
| 80 mph (129 km/h) | 00h 18m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $3.43 | $6.86 |
| Mid-grade | $4.46 | $3.88 | $7.76 |
| Premium | $4.86 | $4.23 | $8.45 |
| Diesel | $6.00 | $5.22 | $10.43 |
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 28, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.