How far is Troy, NH from Merrimack, NH?
The driving distance from Troy, NH to Merrimack, NH is about 47.4 miles (76.3 km), with a travel time of about 01h 07m by car.
- The straight-line flight distance is about 35 miles (56.3 km).
- For a round trip, plan for roughly 02h 14m 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 07m.
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.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Troy and Merrimack.
Turn-by-Turn Driving Directions
Step-by-step road directions between Troy and Merrimack.
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1
Start on South Main Street
25 m · 3 sec · South Main Street
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2
Turn right onto Monadnock Street
2.6 mi · 6 min · Monadnock Street
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3
Continue on Troy Road
107 m · 14 sec · Troy Road
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4
Turn right onto Mountain Road
4.4 mi · 8 min · Mountain Road
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5
Continue on Main Street
2.1 mi · 5 min · Main Street
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6
Turn left onto Peterborough Street
2.8 mi · 5 min · Peterborough Street
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7
Continue on Jaffrey Road
3.1 mi · 5 min · Jaffrey Road
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8
Continue on Grove Street
1086 ft · 31 sec · Grove Street
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9
Turn right onto Wilton Road
4 mi · 7 min · Wilton Road
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10
Continue on Gibbons Highway
9.3 mi · 15 min · Gibbons Highway
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11
Continue on Elm Street
1.3 mi · 3 min · Elm Street
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12
Turn right onto State Route 101
4.9 mi · 7 min · State Route 101
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13
Take the exit slight right toward NH 101A: Milford, Nashua
2194 ft · 1 min
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14
Keep slight left
68 m · 10 sec
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15
Turn right
4 mi · 8 min
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16
Turn left onto Continental Boulevard
3.9 mi · 8 min · Continental Boulevard
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17
Continue on Greeley Street
1028 ft · 33 sec · Greeley Street
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18
Turn left onto Daniel Webster Highway
1.9 mi · 5 min · Daniel Webster Highway
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19
Turn sharp right onto Loop Road
25 m · 4 sec · Loop Road
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20
Arrive at your destination
0 m · 1 sec · Loop Road
Car Route Details
A richer read on the saved driving route between Troy 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.
Gibbons Highway
Continue on Gibbons Highway
9.33 mi · 00h 15m
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 Troy 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 Troy to Merrimack?
The road trip is about 47.4 miles (76.3 km) and usually takes 01h 07m 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?
Temple is a useful midpoint, sitting about 22.7 miles from Troy and 24.7 miles from Merrimack.
How much longer is the road route than the straight-line distance?
The direct path is about 35 miles (56.3 km), while the road route adds roughly 12.4 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 4:16 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.59 one way or $13.18 round trip. Estimated CO2 is about 14.8 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Troy and Mostly Sunny near Merrimack.
Stop Ideas Near Temple
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 Temple.
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Union Station
Flight Path Map
This map shows the direct air route between Troy and Merrimack. Straight-line distance: 34.96 mi (56.26 km).
#1 Troy
Town in Cheshire County, New Hampshire, United States
| Population | 2,117 |
| Coordinates | 42.8239700, -72.1811900 |
| Altitude | 309 |
| 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: 76 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 34m |
| 40 mph (64.37 km/h) | 01h 11m |
| 50 mph (80.47 km/h) | 00h 56m |
| 60 mph (96.56 km/h) | 00h 47m |
| 70 mph (112.65 km/h) | 00h 40m |
| 80 mph (129 km/h) | 00h 35m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $6.59 | $13.18 |
| Mid-grade | $4.46 | $7.44 | $14.89 |
| Premium | $4.86 | $8.11 | $16.23 |
| Diesel | $6.00 | $10.01 | $20.03 |
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.