Origin
Londonderry, NH
Afternoon in Londonderry on Saturday
Local time
4:38 PM
EDT
Current temp
54°F
Unavailable
Live forecast
Trip from Londonderry, NH to Merrimack, NH
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
24m
Distance
11.4 mi
18 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$2
one way
EV Charging
Good
8 stations
Best Time to Leave
4 AM
0h 23m
★
6 AM
0h 25m
8 AM
0h 29m
10 AM
0h 26m
12 PM
0h 26m
3 PM
0h 27m
5 PM
0h 29m
8 PM
0h 24m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Londonderry, NH
Wikimedia Commons
Merrimack, NH
Wikimedia Commons
Trip Overview
The drive from Londonderry, NH to Merrimack, NH covers 11.4 miles and takes about 24m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Daniel Webster Highway, Mammoth Road, Litchfield Road for much of the mileage, and the overall profile is mostly surface roads. The longest uninterrupted segment is about 3.8 miles on Daniel Webster Highway. At current regular gas prices, budget about $1.84 one way before food or hotel costs.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Daniel Webster Highway | 3.8 mi | 8m |
| Mammoth Road | 2.4 mi | 4m |
| Litchfield Road | 1.4 mi | 3m |
| Harvey Road | 1.1 mi | 2m |
| Pettengill Road | 1.1 mi | 2m |
| Raymond Wieczorek Drive | 0.6 mi | <1m |
| South River Road | 0.4 mi | <1m |
| High Range Road | 0.2 mi | <1m |
Longest stretch:
Daniel Webster Highway
— 3.8 mi, about 8m
Turn-by-Turn Driving Directions
Step-by-step road directions between Londonderry, NH and Merrimack, NH.
1
Start on NH 128
2.4 mi
·
4 min
·
Mammoth Road
2
Turn left onto Litchfield Road
1.4 mi
·
3 min
·
Litchfield Road
3
Turn right onto High Range Road
0.2 mi
·
29 sec
·
High Range Road
4
Continue on Harvey Road
1.1 mi
·
2 min
·
Harvey Road
5
At end of road, turn left onto Pettengill Road
1.1 mi
·
2 min
·
Pettengill Road
6
Turn left onto Raymond Wieczorek Drive
0.6 mi
·
58 sec
·
Raymond Wieczorek Drive
Use the left lane.
7
Take the exit
0.4 mi
·
55 sec
Toward Merrimack
Use the slight right lane.
8
Turn left onto US 3
0.4 mi
·
49 sec
·
South River Road
Use the straight / left lanes.
9
Continue on US 3
3.8 mi
·
8 min
·
Daniel Webster Highway
Use the straight lane.
10
Turn slight left onto Loop Road
83 ft
·
3 sec
·
Loop Road
11
Arrive at destination
Loop Road
Heads-up: tricky spots
5 of 65 decision points cluster between mile 2.4 and 7.2 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
2.4 mi into trip
|
~4m in
|
Litchfield Road
Turn left onto Litchfield Road
Navigation decision point
3
3.8 mi into trip
|
~8m in
|
High Range Road
Turn right onto High Range Road
Navigation decision point
4
6.2 mi into trip
|
~13m in
|
Raymond Wieczorek Drive
Turn left onto Raymond Wieczorek Drive
Lane positioning matters here
Use the left lane.
6
6.8 mi into trip
|
~14m in
Take the exit toward Merrimack
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Toward Merrimack
4
7.2 mi into trip
|
~15m in
|
US 3 / South River Road
Turn left onto US 3 / South River Road
Lane positioning matters here
Use the straight / left lanes.
Fuel & Cost
Regular Gas
$1.84 one way
$3.67 round trip
$4.09/gal
25.4 MPG avg
4 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.50 | $2.02 | $4.04 |
| premium | $4.86 | $2.18 | $4.37 |
| diesel | $5.61 | $2.52 | $5.03 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$2
Estimated CO2 emission: 4 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $1 in charging · 0 stops · 75% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 3.4 | 0 | $1.20 | $0.55 |
| Efficient EV | 2.9 | 0 | $1.00 | $0.46 |
| EV Truck/SUV | 4.6 | 0 | $1.60 | $0.73 |
Gas CO2
4 kg
EV CO2
1 kg (75% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Destination
Merrimack, NH
Afternoon in Merrimack on Saturday
Local time
4:38 PM
EDT
Current temp
39°F
Unavailable
Live forecast
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
15 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
24m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
What kind of drive is this?
11.4 mi in 24m across surface roads — expect steady turns and local traffic rather than long highway runs.
Only 0% highway — the rest is turn-by-turn surface driving.
11 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 3.8 mi on Daniel Webster Highway.
How Hard Is This Drive?
4/10
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. There are only a few real navigation decisions along the way. The trickiest moment comes around 2.4 miles in near Litchfield Road.
Driving Effort
4/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 24m drive. You will face about 6 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 2.4 miles (Litchfield Road): Navigation decision point; at 3.8 miles (High Range Road): Navigation decision point; at 6.2 miles (Raymond Wieczorek Drive): Lane positioning matters here.
About the Cities
Arriving in Merrimack, NH
Full guide →Merrimack is a city in the Merrimack Valley of New Hampshire.
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 24m. Total distance: 11.4 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
24m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (0%). Straightforward navigation.
Scenic Drive
Mostly surface roads route profile.
Frequently Asked Questions
The longest stretch is about 3.8 miles on Daniel Webster Highway. The full list of main roads is in the Roads section above.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
Mostly yes along the main roads, but rural stretches through NH can have sparse or no coverage. Before you leave, download offline Google Maps or Apple Maps for the route, and consider downloading music or podcasts instead of streaming. If you depend on data for navigation, keep a paper backup of the turn-by-turn directions.
The main spots that need attention: at 2.4 miles (Litchfield Road): Navigation decision point; at 3.8 miles (High Range Road): Navigation decision point; at 6.2 miles (Raymond Wieczorek Drive): Lane positioning matters here.
Yes. A round trip is manageable in a single day if you plan a break at Merrimack, NH before heading back.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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