How far is Alstead, NH from Merrimack, NH?
The driving distance from Alstead, NH to Merrimack, NH is about 76.9 miles (123.8 km), with a travel time of about 01h 36m by car.
- The straight-line flight distance is about 48 miles (77.3 km).
- For a round trip, plan for roughly 03h 13m 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.
Slight Chance Rain Showers
Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Alstead and Merrimack.
Turn-by-Turn Driving Directions
Step-by-step road directions between Alstead and Merrimack.
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1
Start on Mechanic Street
2995 ft · 1 min · Mechanic Street
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2
Continue on Forest Road
4.7 mi · 11 min · Forest Road
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3
Continue on NH Route 123
4.8 mi · 12 min · NH Route 123
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4
At the end of the road, turn right onto Dartmouth College Road
83 m · 7 sec · Dartmouth College Road
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5
Continue on State Route 10
1.5 km · 2 min · State Route 10
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6
Turn left onto Telephone Road
942 ft · 18 sec · Telephone Road
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7
Turn slight left onto Forest Road East
1519 ft · 29 sec · Forest Road East
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8
Continue on Route 123 North
7.4 mi · 14 min · Route 123 North
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9
At the end of the road, turn left onto Route 9
2.3 mi · 3 min · Route 9
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10
Continue on Keene Road
5.7 mi · 8 min · Keene Road
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11
Continue on West Main Street
1.9 mi · 3 min · West Main Street
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12
Turn straight onto Franklin Pierce Highway
16.3 mi · 22 min · Franklin Pierce Highway
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13
Merge slight left
7.9 mi · 10 min
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14
Take the exit slight right toward I 93 South Toll: Manchester, Boston
1 km · 1 min
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15
Merge slight right onto Everett Turnpike
5.7 mi · 7 min · Everett Turnpike
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16
Keep slight left to continue on Everett Turnpike
2 mi · 2 min · Everett Turnpike
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17
Keep slight left to continue on Everett Turnpike
8.2 mi · 11 min · Everett Turnpike
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18
Keep slight left to continue on Everett Turnpike
2.4 mi · 3 min · Everett Turnpike
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19
Take the exit slight right toward Airport
1.3 km · 1 min
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20
Keep slight right to continue on Merrimack
1425 ft · 38 sec
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21
Turn right onto South River Road
704 ft · 13 sec · South River Road
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22
Continue on Daniel Webster Highway
3.8 mi · 8 min · Daniel Webster Highway
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23
Turn slight left onto Loop Road
25 m · 4 sec · Loop Road
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24
Arrive at your destination
0 m · 1 sec · Loop Road
Car Route Details
A richer read on the saved driving route between Alstead 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.
Franklin Pierce Highway
Turn straight onto Franklin Pierce Highway
16.3 mi · 00h 22m
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 Rain Showers leaving Alstead 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 Alstead to Merrimack?
The road trip is about 76.9 miles (123.8 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?
Henniker is a useful midpoint, sitting about 38.4 miles from Alstead and 38.5 miles from Merrimack.
How much longer is the road route than the straight-line distance?
The direct path is about 48 miles (77.3 km), while the road route adds roughly 28.9 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 3:16 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $10.69 one way or $21.38 round trip. Estimated CO2 is about 24.1 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers around Alstead and Slight Chance Rain Showers near Merrimack.
Stop Ideas Near Henniker
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 Henniker.
Concord, New Hampshire
Manchester, New Hampshire
Tilton, New Hampshire
Nashua, NH
Flight Path Map
This map shows the direct air route between Alstead and Merrimack. Straight-line distance: 48.01 mi (77.26 km).
#1 Alstead
City in Cheshire County, New Hampshire, United States of America
| Population | 1,951 |
| Coordinates | 43.1489700, -72.3606400 |
| Altitude | 147 |
| 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: 124 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 33m |
| 40 mph (64.37 km/h) | 01h 55m |
| 50 mph (80.47 km/h) | 01h 32m |
| 60 mph (96.56 km/h) | 01h 16m |
| 70 mph (112.65 km/h) | 01h 05m |
| 80 mph (129 km/h) | 00h 57m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $10.69 | $21.38 |
| Mid-grade | $4.46 | $12.08 | $24.16 |
| Premium | $4.86 | $13.17 | $26.33 |
| Diesel | $6.00 | $16.25 | $32.50 |
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.