How far is Merrimack, NH from Greenfield, NH?
The driving distance from Merrimack, NH to Greenfield, NH is about 26.9 miles (43.3 km), with a travel time of about 00h 59m by car.
- The straight-line flight distance is about 20.1 miles (32.3 km).
- For a round trip, plan for roughly 01h 59m 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 00h 59m.
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.
City in United States of America
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 Merrimack and Greenfield.
Turn-by-Turn Driving Directions
Step-by-step road directions between Merrimack and Greenfield.
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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
152 m · 20 sec · Daniel Webster Highway
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3
Turn left onto Baboosic Lake Road
5.2 mi · 13 min · Baboosic Lake Road
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4
Continue on Camp Road
2153 ft · 1 min · Camp Road
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5
Turn left
2.8 mi · 4 min
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6
Turn right onto Blueberry Hill Road
1162 ft · 33 sec · Blueberry Hill Road
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7
Turn right onto Bayberry Drive
1104 ft · 33 sec · Bayberry Drive
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8
Turn right onto Blueberry Hill Road
87 m · 10 sec · Blueberry Hill Road
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9
Turn left onto Dodge Road
1850 ft · 55 sec · Dodge Road
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10
Continue on Jones Road
2263 ft · 1 min · Jones Road
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11
At the end of the road, turn right onto New Boston Road
1.2 km · 2 min · New Boston Road
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12
Turn left onto Old Mont Vernon Road
2739 ft · 1 min · Old Mont Vernon Road
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13
Continue on Old Amherst Road
1.9 mi · 5 min · Old Amherst Road
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14
Turn right onto North Main Street
2168 ft · 1 min · North Main Street
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15
Turn left onto Francestown Turnpike
3 mi · 6 min · Francestown Turnpike
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16
Continue on 2nd New Hampshire Turnpike South
6.2 mi · 14 min · 2nd New Hampshire Turnpike South
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17
Turn left onto New Boston Road
13 m · 1 sec · New Boston Road
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18
Turn slight left onto Greenfield Road
3 mi · 6 min · Greenfield Road
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19
Continue on Town Line Road
1.3 mi · 3 min · Town Line Road
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20
Turn right onto Forest Road
93 m · 10 sec · Forest Road
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21
Turn right onto Sawmill Road
25 m · 2 sec · Sawmill Road
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22
Arrive at your destination
0 m · 1 sec · Sawmill Road
Car Route Details
A richer read on the saved driving route between Merrimack and Greenfield.
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.
2nd New Hampshire Turnpike South
Continue on 2nd New Hampshire Turnpike South
6.22 mi · 00h 14m
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 Merrimack and Mostly Sunny near Greenfield.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Merrimack to Greenfield?
The road trip is about 26.9 miles (43.3 km) and usually takes 00h 59m 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?
Mont Vernon is a useful midpoint, sitting about 13.4 miles from Merrimack and 13.5 miles from Greenfield.
How much longer is the road route than the straight-line distance?
The direct path is about 20.1 miles (32.3 km), while the road route adds roughly 6.8 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 4:30 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.75 one way or $7.50 round trip. Estimated CO2 is about 8.4 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Merrimack and Mostly Sunny near Greenfield.
Stop Ideas Near Mont Vernon
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 Mont Vernon.
Nashua, NH
Manchester, New Hampshire
Concord, New Hampshire
Haverhill station
Flight Path Map
This map shows the direct air route between Merrimack and Greenfield. Straight-line distance: 20.06 mi (32.29 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 Greenfield
Town in Hillsborough County, New Hampshire, United States
| Population | 1,845 |
| Coordinates | 42.9506400, -71.8723000 |
| Altitude | 258 |
| Country | United States |
End: Greenfield (-71.8723, 42.95064)
Estimated Travel Time
Distance: 43 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 53m |
| 40 mph (64.37 km/h) | 00h 40m |
| 50 mph (80.47 km/h) | 00h 32m |
| 60 mph (96.56 km/h) | 00h 26m |
| 70 mph (112.65 km/h) | 00h 23m |
| 80 mph (129 km/h) | 00h 20m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $3.75 | $7.50 |
| Mid-grade | $4.46 | $4.23 | $8.47 |
| Premium | $4.86 | $4.62 | $9.23 |
| Diesel | $6.00 | $5.70 | $11.39 |
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 · May 02, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.