How far is Londonderry, NH from Troy, NH?
The driving distance from Londonderry, NH to Troy, NH is about 55.4 miles (89.1 km), with a travel time of about 01h 41m by car.
- The straight-line flight distance is about 41 miles (66 km).
- For a round trip, plan for roughly 03h 22m 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 41m.
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.
Human settlement in Hillsborough County, New Hampshire, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
The map below follows the saved road route between Londonderry and Troy.
Turn-by-Turn Driving Directions
Step-by-step road directions between Londonderry and Troy.
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1
Start on Mammoth Road
1.4 mi · 3 min · Mammoth Road
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2
Turn right onto Nashua Road
2.9 mi · 4 min · Nashua Road
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3
Continue on Derry Road
3.7 mi · 7 min · Derry Road
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4
Continue on Derry Street
1 mi · 3 min · Derry Street
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5
Turn right onto Ferry Street
955 ft · 27 sec · Ferry Street
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6
Continue on Bridge Street
3208 ft · 2 min · Bridge Street
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7
Continue on Canal Street
3176 ft · 2 min · Canal Street
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8
At the end of the road, turn right onto Main Street
155 m · 23 sec · Main Street
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9
Turn left onto Amherst Street
1.1 km · 2 min · Amherst Street
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10
Turn left onto Broad Street
2.2 mi · 6 min · Broad Street
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11
Enter the roundabout and take exit 2 toward Broad Street
29 m · 3 sec · Broad Street
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12
Exit the roundabout onto Broad Street
3.9 mi · 8 min · Broad Street
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13
Turn right onto Ash Street
2243 ft · 1 min · Ash Street
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14
Continue on Proctor Hill Road
3.2 mi · 6 min · Proctor Hill Road
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15
Continue on Pepperell Road
1.3 km · 2 min · Pepperell Road
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16
Turn left onto Cross Road
835 ft · 41 sec · Cross Road
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17
At the end of the road, turn left onto South Main Street
1.1 km · 2 min · South Main Street
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18
At the end of the road, turn left onto Route 13
1.3 km · 1 min · Route 13
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19
Continue on Brookline Road
2.6 mi · 4 min · Brookline Road
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20
Continue on Brookline Street
2323 ft · 39 sec · Brookline Street
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21
Turn straight onto Highland Street
111 m · 6 sec · Highland Street
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22
Turn slight left onto School Street
144 m · 13 sec · School Street
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23
Turn right onto Main Street
3.2 mi · 6 min · Main Street
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24
Turn right onto Wheeler Road
1465 ft · 42 sec · Wheeler Road
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25
Continue on Ashby Road
1441 ft · 41 sec · Ashby Road
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26
Continue on Turnpike Road
1.2 mi · 3 min · Turnpike Road
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27
Continue on Turnpike Road
1.5 km · 2 min · Turnpike Road
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28
Turn straight onto Main Street
1.4 mi · 3 min · Main Street
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29
Continue on West State Road
2.1 mi · 3 min · West State Road
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30
Continue on Rindge State Road
3.3 mi · 5 min · Rindge State Road
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31
Continue on Route 119
3 mi · 4 min · Route 119
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32
Continue on NH Route 119
9.4 mi · 16 min · NH Route 119
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33
Turn right onto NH Route 12 North
2.4 mi · 3 min · NH Route 12 North
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34
Continue on Fitzwilliam Road
1.2 mi · 1 min · Fitzwilliam Road
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35
Continue on South Main Street
110 m · 5 sec · South Main Street
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36
Arrive at your destination
0 m · 1 sec · South Main Street
Car Route Details
A richer read on the saved driving route between Londonderry and Troy.
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.
NH Route 119
Continue on NH Route 119
9.35 mi · 00h 16m
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.
Clear leaving Londonderry and Sunny near Troy.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Londonderry to Troy?
The road trip is about 55.4 miles (89.1 km) and usually takes 01h 41m 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?
Mason is a useful midpoint, sitting about 27.6 miles from Londonderry and 27.8 miles from Troy.
How much longer is the road route than the straight-line distance?
The direct path is about 41 miles (66 km), while the road route adds roughly 14.4 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 3:08 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $8.34 one way or $16.68 round trip. Estimated CO2 is about 17.3 kg one way.
What should you check before leaving?
Before you leave, expect Clear around Londonderry and Sunny near Troy.
Stop Ideas Near Mason
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City Hall - Internet Backbone Point
Nashua City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Mason.
Nashua, NH
Manchester, New Hampshire
Union Station
Concord, New Hampshire
Flight Path Map
This map shows the direct air route between Londonderry and Troy. Straight-line distance: 40.99 mi (65.97 km).
#1 Londonderry
Town in Rockingham County, New Hampshire, United States of America
| Population | 26,646 |
| Coordinates | 42.8650900, -71.3739500 |
| Altitude | 128 |
| Country | United States |
#2 Troy
Town in Cheshire County, New Hampshire, United States
| Population | 2,117 |
| Coordinates | 42.8239700, -72.1811900 |
| Altitude | 309 |
| Country | United States |
End: Troy (-72.18119, 42.82397)
Estimated Travel Time
Distance: 89 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 50m |
| 40 mph (64.37 km/h) | 01h 23m |
| 50 mph (80.47 km/h) | 01h 06m |
| 60 mph (96.56 km/h) | 00h 55m |
| 70 mph (112.65 km/h) | 00h 47m |
| 80 mph (129 km/h) | 00h 41m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.28 | $8.34 | $16.68 |
| Mid-grade | $4.84 | $9.43 | $18.86 |
| Premium | $5.29 | $10.31 | $20.63 |
| Diesel | $6.10 | $11.90 | $23.80 |
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 · Sep 15, 2026