How far is Somersworth, NH from Merrimack, NH?
The driving distance from Somersworth, NH to Merrimack, NH is about 54.2 miles (87.3 km), with a travel time of about 01h 11m by car.
- The straight-line flight distance is about 41.9 miles (67.4 km).
- For a round trip, plan for roughly 02h 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 11m.
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.
Chance Showers And Thunderstorms
Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between Somersworth and Merrimack.
Turn-by-Turn Driving Directions
Step-by-step road directions between Somersworth and Merrimack.
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1
Start on Highland Street
3 m · 2 sec · Highland Street
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2
Turn right onto High Street
2.5 mi · 6 min · High Street
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3
Continue on Indian Brook Drive
1 mi · 3 min · Indian Brook Drive
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4
Turn left
1920 ft · 47 sec
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5
Merge slight left onto Spaulding Turnpike
2 mi · 3 min · Spaulding Turnpike
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6
Take the exit slight right toward NH 9 West, NH 155 West: Madbury
900 ft · 31 sec
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7
Turn slight right onto Knox Marsh Road
2.8 mi · 5 min · Knox Marsh Road
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8
Continue on Manchester Road
106 m · 8 sec · Manchester Road
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9
Continue on Lee Road
1.3 mi · 2 min · Lee Road
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10
Continue on Turtle Pond Road
1.1 mi · 2 min · Turtle Pond Road
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11
Take the ramp right
1240 ft · 19 sec
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12
Merge slight left onto Concord Road
1.3 mi · 2 min · Concord Road
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13
Enter the roundabout and take exit 3 toward Lee Circle
88 m · 8 sec · Calef Highway
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14
Exit the rotary onto Calef Highway
9.6 mi · 15 min · Calef Highway
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15
Take the exit slight right
1904 ft · 47 sec
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16
Merge slight left
20.3 mi · 24 min
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17
Keep slight right to continue on I 293 North, NH 101 West: Manchester Airport, Manchester, Bedford
3.3 mi · 4 min
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18
Keep slight left to continue on NH 101 West: Bedford, Nashua
2871 ft · 45 sec
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19
Take the exit slight right toward Everett Turnpike South: Merrimack, Nashua, Manchester Airport
1840 ft · 44 sec
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20
Merge slight left onto Everett Turnpike
1.9 mi · 3 min · Everett Turnpike
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21
Take the exit slight right toward Airport
1.3 km · 1 min
-
22
Keep slight right to continue on Merrimack
1425 ft · 38 sec
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23
Turn right onto South River Road
704 ft · 13 sec · South River Road
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24
Continue on Daniel Webster Highway
3.8 mi · 8 min · Daniel Webster Highway
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25
Turn slight left onto Loop Road
25 m · 4 sec · Loop Road
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26
Arrive at your destination
0 m · 1 sec · Loop Road
Car Route Details
A richer read on the saved driving route between Somersworth and Merrimack.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Calef Highway
Merge slight left
20.3 mi · 00h 24m
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.
Chance Showers And Thunderstorms leaving Somersworth and Showers And Thunderstorms Likely near Merrimack.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Somersworth to Merrimack?
The road trip is about 54.2 miles (87.3 km) and usually takes 01h 11m 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?
Raymond is a useful midpoint, sitting about 27.1 miles from Somersworth and 27.2 miles from Merrimack.
How much longer is the road route than the straight-line distance?
The direct path is about 41.9 miles (67.4 km), while the road route adds roughly 12.3 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 4:08 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.57 one way or $15.15 round trip. Estimated CO2 is about 17.1 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms around Somersworth and Showers And Thunderstorms Likely near Merrimack.
Stop Ideas Near Raymond
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 Raymond.
Exeter station
Durham–UNH station
Manchester, New Hampshire
Haverhill station
Flight Path Map
This map shows the direct air route between Somersworth and Merrimack. Straight-line distance: 41.91 mi (67.44 km).
#1 Somersworth
City in Strafford County, New Hampshire, United States
| Population | 12,286 |
| Coordinates | 43.2617500, -70.8653400 |
| Altitude | 71 |
| 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: 87 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 48m |
| 40 mph (64.37 km/h) | 01h 21m |
| 50 mph (80.47 km/h) | 01h 05m |
| 60 mph (96.56 km/h) | 00h 54m |
| 70 mph (112.65 km/h) | 00h 46m |
| 80 mph (129 km/h) | 00h 40m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $7.57 | $15.15 |
| Mid-grade | $4.46 | $8.56 | $17.11 |
| Premium | $4.86 | $9.33 | $18.65 |
| Diesel | $6.00 | $11.51 | $23.03 |
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 · Apr 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.