How far is Greenfield, NH from Merrimack, NH?
The driving distance from Greenfield, NH to Merrimack, NH is about 30 miles (48.2 km), with a travel time of about 00h 45m by car.
- The straight-line flight distance is about 20.1 miles (32.3 km).
- For a round trip, plan for roughly 01h 30m 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 45m.
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.
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 Greenfield and Merrimack.
Turn-by-Turn Driving Directions
Step-by-step road directions between Greenfield and Merrimack.
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1
Start on Sawmill Road
25 m · 6 sec · Sawmill Road
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2
Turn left onto Forest Road
93 m · 13 sec · Forest Road
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3
Turn left onto Town Line Road
1.3 mi · 3 min · Town Line Road
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4
Continue on Greenfield Road
3 mi · 6 min · Greenfield Road
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5
Continue on Greenfield Road
53 m · 5 sec · Greenfield Road
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6
Turn slight right onto New Boston Road
13 m · 3 sec · New Boston Road
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7
Turn right onto 2nd New Hampshire Turnpike South
6.2 mi · 14 min · 2nd New Hampshire Turnpike South
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8
Continue on Francestown Turnpike
3 mi · 7 min · Francestown Turnpike
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9
At the end of the road, turn right onto North Main Street
2168 ft · 1 min · North Main Street
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10
Turn left onto Smith Road
66 m · 6 sec · Smith Road
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11
Turn slight right onto Old Amherst Road
1.8 mi · 5 min · Old Amherst Road
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12
Continue on Old Mont Vernon Road
2739 ft · 1 min · Old Mont Vernon Road
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13
Turn right onto New Boston Road
1.2 km · 2 min · New Boston Road
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14
Turn left onto Jones Road
2263 ft · 1 min · Jones Road
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15
Continue on Dodge Road
1850 ft · 53 sec · Dodge Road
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16
Turn right onto Blueberry Hill Road
87 m · 13 sec · Blueberry Hill Road
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17
Turn left onto Bayberry Drive
1104 ft · 33 sec · Bayberry Drive
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18
Turn left onto Blueberry Hill Road
1162 ft · 38 sec · Blueberry Hill Road
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19
At the end of the road, turn left
2.4 mi · 4 min
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20
Continue straight
2275 ft · 40 sec
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21
Turn right onto Camp Road
2139 ft · 59 sec · Camp Road
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22
Continue on Baboosic Lake Road
3.9 mi · 10 min · Baboosic Lake Road
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23
Turn left onto Joppa Road
561 ft · 27 sec · Joppa Road
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24
Turn right onto Glenwood Lane
72 m · 17 sec · Glenwood Lane
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25
Turn left onto Evergreen Drive
61 m · 10 sec · Evergreen Drive
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26
Turn right onto Shady Lane
154 m · 28 sec · Shady Lane
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27
At the end of the road, turn left onto Baboosic Lake Road
1.1 mi · 3 min · Baboosic Lake Road
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28
At the end of the road, turn right onto Daniel Webster Highway
152 m · 14 sec · Daniel Webster Highway
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29
Turn slight left onto Loop Road
25 m · 4 sec · Loop Road
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30
Arrive at your destination
0 m · 1 sec · Loop Road
Car Route Details
A richer read on the saved driving route between Greenfield 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.
2nd New Hampshire Turnpike South
Turn right onto 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 short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Mostly Sunny leaving Greenfield and Mostly Sunny near Merrimack.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Greenfield to Merrimack?
The road trip is about 30 miles (48.2 km) and usually takes 00h 45m 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?
Mont Vernon is a useful midpoint, sitting about 13.5 miles from Greenfield and 16.5 miles from Merrimack.
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 9.9 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 7:00 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.18 one way or $8.36 round trip. Estimated CO2 is about 9.4 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Greenfield and Mostly Sunny near Merrimack.
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 Greenfield and Merrimack. Straight-line distance: 20.06 mi (32.29 km).
#1 Greenfield
Town in Hillsborough County, New Hampshire, United States
| Population | 1,845 |
| Coordinates | 42.9506400, -71.8723000 |
| Altitude | 258 |
| 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: 48 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 59m |
| 40 mph (64.37 km/h) | 00h 44m |
| 50 mph (80.47 km/h) | 00h 35m |
| 60 mph (96.56 km/h) | 00h 29m |
| 70 mph (112.65 km/h) | 00h 25m |
| 80 mph (129 km/h) | 00h 22m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $4.18 | $8.36 |
| Mid-grade | $4.46 | $4.72 | $9.45 |
| Premium | $4.86 | $5.15 | $10.30 |
| Diesel | $6.00 | $6.36 | $12.71 |
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.