How far is Merrimack, NH from Greenville, NH?
The driving distance from Merrimack, NH to Greenville, NH is about 24.9 miles (40 km), with a travel time of about 00h 48m by car.
- The straight-line flight distance is about 17.5 miles (28.2 km).
- For a round trip, plan for roughly 01h 37m 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 48m.
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 Hillsborough County, New Hampshire, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny then Chance Rain Showers
Mostly Sunny then Slight Chance Light Rain
Driving Route Map
The map below follows the saved road route between Merrimack and Greenville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Merrimack and Greenville.
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1
Start on Loop Road
938 ft · 46 sec · Loop Road
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2
At the end of the road, turn left onto Daniel Webster Highway
1.7 mi · 4 min · Daniel Webster Highway
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3
Turn right onto Greeley Street
1118 ft · 28 sec · Greeley Street
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4
Continue on Continental Boulevard
3.8 mi · 8 min · Continental Boulevard
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5
Turn right onto Milford Road
4.3 mi · 8 min · Milford Road
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6
Turn left
1544 ft · 43 sec
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7
Merge slight left
4.8 mi · 7 min
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8
Turn left onto Elm Street
1.4 mi · 3 min · Elm Street
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9
Continue on Gibbons Highway
2.7 mi · 5 min · Gibbons Highway
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10
Turn left onto Greenville Road
4.9 mi · 10 min · Greenville Road
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11
Turn right onto Mill Street
124 m · 21 sec · Mill Street
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12
Turn left onto Hubbard Hill Road
1430 ft · 1 min · Hubbard Hill Road
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13
Continue on Main Street
778 ft · 16 sec · Main Street
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14
Turn left onto High Street
15 m · 3 sec · High Street
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15
Turn left
10 m · 3 sec
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16
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Merrimack and Greenville.
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.
Greenville Road
Turn left onto Greenville Road
4.93 mi · 00h 10m
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.
Partly Sunny then Chance Rain Showers leaving Merrimack and Mostly Sunny then Slight Chance Light Rain near Greenville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Merrimack to Greenville?
The road trip is about 24.9 miles (40 km) and usually takes 00h 48m 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?
Milford is a useful midpoint, sitting about 12.4 miles from Merrimack and 12.4 miles from Greenville.
How much longer is the road route than the straight-line distance?
The direct path is about 17.5 miles (28.2 km), while the road route adds roughly 7.4 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 4:52 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.47 one way or $6.94 round trip. Estimated CO2 is about 7.8 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny then Chance Rain Showers around Merrimack and Mostly Sunny then Slight Chance Light Rain near Greenville.
Stop Ideas Near Milford
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 Milford.
Nashua, NH
Manchester, New Hampshire
Concord, New Hampshire
Haverhill station
Flight Path Map
This map shows the direct air route between Merrimack and Greenville. Straight-line distance: 17.52 mi (28.19 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 Greenville
Town in Hillsborough County, New Hampshire, United States
| Population | 2,110 |
| Coordinates | 42.7673100, -71.8123000 |
| Altitude | 250 |
| Country | United States |
End: Greenville (-71.8123, 42.76731)
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 37m |
| 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 | $3.47 | $6.94 |
| Mid-grade | $4.46 | $3.92 | $7.84 |
| Premium | $4.86 | $4.28 | $8.55 |
| Diesel | $6.00 | $5.28 | $10.55 |
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 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.