How far is Londonderry, NH from Alton, NH?
The driving distance from Londonderry, NH to Alton, NH is about 51.8 miles (83.3 km), with a travel time of about 01h 23m by car.
- The straight-line flight distance is about 41.3 miles (66.5 km).
- For a round trip, plan for roughly 02h 47m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EST.
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 23m.
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.
Partly Sunny
Mostly Sunny then Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Londonderry and Alton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Londonderry and Alton.
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1
Start on Mammoth Road
3.5 mi · 7 min · Mammoth Road
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2
Turn right onto Smith Lane
699 ft · 31 sec · Smith Lane
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3
Turn straight onto Rockingham Road
1.2 mi · 2 min · Rockingham Road
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4
Turn left onto I 93 North
2701 ft · 1 min
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5
Merge slight left onto Alan B Shepard Highway
5.2 mi · 7 min · Alan B Shepard Highway
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6
Keep slight left to continue on I 93 North: Concord, Plymouth
7.1 mi · 9 min
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7
Keep slight right to continue on Everett Turnpike
1625 ft · 21 sec · Everett Turnpike
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8
Take the exit slight right toward Hooksett
2590 ft · 1 min
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9
Turn left onto Hackett Hill Road
1333 ft · 39 sec · Hackett Hill Road
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10
Turn left onto West River Road
1787 ft · 44 sec · West River Road
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11
Turn right onto Riverside Street
1560 ft · 1 min · Riverside Street
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12
Turn left onto Main Street
1272 ft · 36 sec · Main Street
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13
Turn straight onto College Park Drive
2508 ft · 1 min · College Park Drive
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14
Turn left onto Hooksett Road
2.2 mi · 4 min · Hooksett Road
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15
Continue on Allenstown Road
1298 ft · 32 sec · Allenstown Road
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16
Turn right onto Pinewood Road
3.2 mi · 5 min · Pinewood Road
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17
Continue on Route 28
1.3 mi · 2 min · Route 28
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18
Continue on Suncook Valley Highway
4.3 mi · 7 min · Suncook Valley Highway
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19
Enter the roundabout and take exit 2 toward Epsom Circle
64 m · 5 sec · Suncook Valley Highway
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20
Exit the rotary onto Suncook Valley Highway
1.6 mi · 3 min · Suncook Valley Highway
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21
Continue on Suncook Valley Road
4.3 mi · 6 min · Suncook Valley Road
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22
Continue on Suncook Valley Highway
1440 ft · 31 sec · Suncook Valley Highway
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23
Continue on Suncook Valley Road
1.1 mi · 2 min · Suncook Valley Road
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24
Continue on Suncook Valley Highway
1.5 km · 2 min · Suncook Valley Highway
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25
Continue on Suncook Valley Road
11.7 mi · 18 min · Suncook Valley Road
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26
Enter the roundabout and take exit 4 toward the route
1115 ft · 32 sec
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27
Exit the roundabout
1329 ft · 43 sec
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28
Turn left
102 m · 24 sec
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29
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Londonderry and Alton.
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.
Suncook Valley Road
Continue on Suncook Valley Road
11.7 mi · 00h 18m
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 leaving Londonderry and Mostly Sunny then Slight Chance Rain Showers near Alton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Londonderry to Alton?
The road trip is about 51.8 miles (83.3 km) and usually takes 01h 23m 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?
Allenstown is a useful midpoint, sitting about 25.8 miles from Londonderry and 25.9 miles from Alton.
How much longer is the road route than the straight-line distance?
The direct path is about 41.3 miles (66.5 km), while the road route adds roughly 10.5 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 EST. If you want a more comfortable same-day return, try to leave by 3:42 PM EST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.50 one way or $15.00 round trip. Estimated CO2 is about 16.3 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Londonderry and Mostly Sunny then Slight Chance Rain Showers near Alton.
Stop Ideas Near Allenstown
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 Allenstown.
Concord, New Hampshire
Manchester, New Hampshire
Tilton, New Hampshire
Durham–UNH station
Flight Path Map
This map shows the direct air route between Londonderry and Alton. Straight-line distance: 41.33 mi (66.52 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 Alton
Town in New Hampshire (United States)
| Population | 5,364 |
| Coordinates | 43.4523000, -71.2175700 |
| Altitude | 165 |
| Country | United States |
End: Alton (-71.21757, 43.4523)
Estimated Travel Time
Distance: 83 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 43m |
| 40 mph (64.37 km/h) | 01h 17m |
| 50 mph (80.47 km/h) | 01h 02m |
| 60 mph (96.56 km/h) | 00h 51m |
| 70 mph (112.65 km/h) | 00h 44m |
| 80 mph (129 km/h) | 00h 38m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.10 | $7.50 | $15.00 |
| Mid-grade | $4.71 | $8.62 | $17.25 |
| Premium | $5.17 | $9.46 | $18.93 |
| Diesel | $6.26 | $11.45 | $22.91 |
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 · Nov 09, 2026