How far is Allenstown, NH from Merrimack, NH?
The driving distance from Allenstown, NH to Merrimack, NH is about 24.5 miles (39.4 km), with a travel time of about 00h 34m by car.
- The straight-line flight distance is about 20.6 miles (33.2 km).
- For a round trip, plan for roughly 01h 09m 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 34m.
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 Allenstown and Merrimack.
Turn-by-Turn Driving Directions
Step-by-step road directions between Allenstown and Merrimack.
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1
Start on the route
21 m · 6 sec
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2
Turn right onto Gilbert Road
1066 ft · 41 sec · Gilbert Road
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3
Turn left onto Pinewood Road
2.8 mi · 5 min · Pinewood Road
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4
At the end of the road, turn left onto Allenstown Road
1480 ft · 37 sec · Allenstown Road
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5
Continue on Hooksett Road
2.2 mi · 4 min · Hooksett Road
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6
Turn slight right onto Hooksett Village
77 m · 9 sec
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7
Turn straight onto College Park Drive
2332 ft · 1 min · College Park Drive
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8
Continue on Main Street
1272 ft · 39 sec · Main Street
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9
Turn right onto Riverside Street
1560 ft · 59 sec · Riverside Street
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10
Turn left onto West River Road
1787 ft · 44 sec · West River Road
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11
Turn right onto Hackett Hill Road
1333 ft · 35 sec · Hackett Hill Road
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12
Take the ramp right
128 m · 11 sec
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13
Keep slight left
2636 ft · 1 min
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14
Continue on I 93 South
1211 ft · 30 sec
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15
Merge slight left onto Everett Turnpike
1.6 km · 2 min · Everett Turnpike
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16
Keep slight left to continue on Everett Turnpike
8.2 mi · 11 min · Everett Turnpike
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17
Keep slight left to continue on Everett Turnpike
2.4 mi · 3 min · Everett Turnpike
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18
Take the exit slight right toward Airport
1.3 km · 1 min
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19
Keep slight right to continue on Merrimack
1425 ft · 38 sec
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20
Turn right onto South River Road
704 ft · 13 sec · South River Road
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21
Continue on Daniel Webster Highway
3.8 mi · 8 min · Daniel Webster Highway
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22
Turn slight left onto Loop Road
25 m · 4 sec · Loop Road
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23
Arrive at your destination
0 m · 1 sec · Loop Road
Car Route Details
A richer read on the saved driving route between Allenstown and Merrimack.
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
Keep slight left to continue on Everett Turnpike
8.18 mi · 00h 11m
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 Allenstown and Sunny near Merrimack.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Allenstown to Merrimack?
The road trip is about 24.5 miles (39.4 km) and usually takes 00h 34m 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 12.2 miles from Allenstown and 12.2 miles from Merrimack.
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 3.9 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 7:20 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.39 one way or $6.79 round trip. Estimated CO2 is about 7.6 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Allenstown and Sunny near Merrimack.
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 Allenstown and Merrimack. Straight-line distance: 20.64 mi (33.22 km).
#1 Allenstown
Town in New Hampshire
| Population | 4,488 |
| Coordinates | 43.1567300, -71.4047800 |
| Altitude | - |
| 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: 39 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 48m |
| 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 20m |
| 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 | $3.39 | $6.79 |
| Mid-grade | $4.46 | $3.83 | $7.67 |
| Premium | $4.86 | $4.18 | $8.36 |
| Diesel | $6.00 | $5.16 | $10.31 |
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.