How far is Merrimack, NH from Derry, NH?
The driving distance from Merrimack, NH to Derry, NH is about 14.4 miles (23.1 km), with a travel time of about 00h 25m by car.
- The straight-line flight distance is about 8.5 miles (13.6 km).
- For a round trip, plan for roughly 00h 50m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 25m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in Rockingham County, New Hampshire, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Partly Sunny then Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Merrimack and Derry.
Turn-by-Turn Driving Directions
Step-by-step road directions between Merrimack and Derry.
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1
Start on Loop Road
25 m · 6 sec · Loop Road
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2
Turn straight onto Daniel Webster Highway
3.8 mi · 8 min · Daniel Webster Highway
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3
Continue on South River Road
641 ft · 12 sec · South River Road
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4
Take the ramp right toward Airport
1104 ft · 27 sec
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5
Merge slight left onto Raymond Wieczorek Drive
2769 ft · 47 sec · Raymond Wieczorek Drive
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6
Turn right onto Pettengill Road
1.1 mi · 3 min · Pettengill Road
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7
Continue on Harvey Road
3008 ft · 1 min · Harvey Road
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8
Turn right onto Webster Road
742 ft · 23 sec · Webster Road
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9
Turn right onto Grenier Field Road
1.2 km · 2 min · Grenier Field Road
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10
Continue on Page Road
1079 ft · 35 sec · Page Road
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11
Turn right onto Rockingham Road
2.1 mi · 3 min · Rockingham Road
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12
Take the ramp right toward I 93 South
2860 ft · 1 min
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13
Merge slight left onto Alan B Shepard Jr Highway
2809 ft · 37 sec · Alan B Shepard Jr Highway
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14
Continue on Alan Bartlett Shepard Junior Highway
2.1 mi · 2 min · Alan Bartlett Shepard Junior Highway
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15
Take the exit slight right toward NH 102: Derry, Londonderry
2896 ft · 1 min
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16
Keep slight left
40 m · 5 sec
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17
Turn left onto Nashua Road
2917 ft · 1 min · Nashua Road
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18
Continue on West Broadway
3209 ft · 2 min · West Broadway
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19
Turn left
32 m · 10 sec
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20
Turn right
24 m · 6 sec
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21
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Merrimack and Derry.
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.
Daniel Webster Highway
Turn straight onto Daniel Webster Highway
3.75 mi · 00h 08m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Mostly Sunny leaving Merrimack and Partly Sunny then Slight Chance Rain Showers near Derry.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Merrimack to Derry?
The road trip is about 14.4 miles (23.1 km) and usually takes 00h 25m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Londonderry is a useful midpoint, sitting about 7.1 miles from Merrimack and 7.2 miles from Derry.
How much longer is the road route than the straight-line distance?
The direct path is about 8.5 miles (13.6 km), while the road route adds roughly 5.9 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 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:40 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.01 one way or $4.02 round trip. Estimated CO2 is about 4.5 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Merrimack and Partly Sunny then Slight Chance Rain Showers near Derry.
Stop Ideas Near Londonderry
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 Londonderry.
Nashua, NH
Manchester, New Hampshire
Haverhill station
Exeter station
Flight Path Map
This map shows the direct air route between Merrimack and Derry. Straight-line distance: 8.48 mi (13.65 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 Derry
Town in New Hampshire, United States
| Population | 33,442 |
| Coordinates | 42.8806400, -71.3272900 |
| Altitude | 84 |
| Country | United States |
End: (-71.327312, 42.880642)
Estimated Travel Time
Distance: 23 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 28m |
| 40 mph (64.37 km/h) | 00h 21m |
| 50 mph (80.47 km/h) | 00h 17m |
| 60 mph (96.56 km/h) | 00h 14m |
| 70 mph (112.65 km/h) | 00h 12m |
| 80 mph (129 km/h) | 00h 10m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.95 | $2.01 | $4.02 |
| Mid-grade | $4.46 | $2.27 | $4.55 |
| Premium | $4.86 | $2.48 | $4.96 |
| Diesel | $6.00 | $3.06 | $6.12 |
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.