Origin
Amherst, NH
Late night in Amherst on Sunday
Local time
12:25 AM
EDT
Current temp
39°F
Unavailable
Live forecast
Trip from Amherst, NH to Londonderry, NH
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
35m
Distance
21.4 mi
34 km
Drive Score
7/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$3
one way
EV Charging
Good
8 stations
Best Time to Leave
4 AM
0h 33m
★
6 AM
0h 36m
8 AM
0h 42m
10 AM
0h 38m
12 PM
0h 37m
3 PM
0h 38m
5 PM
0h 42m
8 PM
0h 34m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Amherst, NH
Mohan Nannapaneni
Londonderry, NH
Wikimedia Commons
Trip Overview
Amherst to Londonderry is 21.4 miles and takes about 35 minutes via NH 101 and Mammoth Road, with a fuel budget near $3 and enough daylight to finish in a day. This short trip stays within the Northeast region, connecting two points in New Hampshire. The drive is a straightforward hop, suitable for a quick errand or a brief scenic detour if you're in the area. Given its brevity, it's easily manageable for a same-day excursion, allowing plenty of time for your destination activities.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| NH 101 | 12.6 mi | 19m |
| Mammoth Road | 3.6 mi | 7m |
| South Willow Street | 2.1 mi | 3m |
| Rockingham Road | 1.7 mi | 2m |
| Amherst Street | 0.8 mi | 1m |
Longest stretch:
NH 101
— 12.6 mi, about 19m
Turn-by-Turn Driving Directions
Step-by-step road directions between Amherst, NH and Londonderry, NH.
1
Start on NH 122
0.8 mi
·
1 min
·
Amherst Street
2
Take the ramp
0.2 mi
·
34 sec
3
Merge onto NH 101
2.9 mi
·
4 min
·
NH 101
4
Continue on NH 101
6.3 mi
·
10 min
·
NH 101
Use the left / straight lanes.
5
Take the exit onto NH 101
3.4 mi
·
4 min
·
NH 101
6
Take the exit
0.3 mi
·
42 sec
Exit 1
Toward NH 28
7
Keep slight right at fork
0.1 mi
·
16 sec
8
Turn right onto NH 28
2.1 mi
·
3 min
·
South Willow Street
Use the left / straight lanes.
9
Continue on NH 28
1.7 mi
·
2 min
·
Rockingham Road
10
Turn right onto NH 128
3.6 mi
·
7 min
·
Mammoth Road
11
Arrive at destination
NH 128
Heads-up: tricky spots
5 of 75 decision points cluster between mile 0.8 and 14 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
3
0.8 mi into trip
|
~1m in
Take the ramp
Navigation decision point
3
1 mi into trip
|
~2m in
|
NH 101
Merge onto NH 101
Merge point - match speed before joining
5
13.6 mi into trip
|
~21m in
Take the exit toward NH 28
Exit ramp - move to the correct lane early
Exit 1
Toward NH 28
4
13.9 mi into trip
|
~22m in
Keep slight right at fork
Highway fork - watch signs carefully
4
14 mi into trip
|
~22m in
|
NH 28 / South Willow Street
Turn right onto NH 28 / South Willow Street
Lane positioning matters here
Use the left / straight lanes.
Fuel & Cost
Regular Gas
$3.45 one way
$6.89 round trip
$4.09/gal
25.4 MPG avg
8 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.50 | $3.79 | $7.58 |
| premium | $4.86 | $4.10 | $8.20 |
| diesel | $5.61 | $4.72 | $9.45 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$3
Estimated CO2 emission: 7.5 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $2 in charging · 0 stops · 57% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 6.4 | 0 | $2.25 | $1.03 |
| Efficient EV | 5.4 | 0 | $1.87 | $0.86 |
| EV Truck/SUV | 8.6 | 0 | $3.00 | $1.37 |
Gas CO2
7 kg
EV CO2
3 kg (57% 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
Londonderry, NH
Late night in Londonderry on Sunday
Local time
12:25 AM
EDT
Current temp
54°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 warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
35m 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?
This drive features a 59% highway share, with the longest continuous stretch on NH 101 measuring 12.6 miles. You'll transition from highway cruising to surface roads, indicated by the significant portion not spent on the freeway. Expect a mixed drive with some merging and exit activity as you navigate between NH 101 and local roads like Mammoth Road and South Willow Street. The change in road type means you'll notice a shift in traffic density and speed.
59% highway, the rest on surface roads — varied driving throughout.
11 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 12.6 mi on NH 101.
How Hard Is This Drive?
4/10
This route mixes highway mileage with some local-road sections near the start or finish. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.8 miles in.
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 35m drive. You will face about 7 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 0.8 miles: Navigation decision point; at 1 miles (NH 101): Merge point - match speed before joining; at 13.6 miles: Exit ramp - move to the correct lane early.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 35m. Total distance: 21.4 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
35m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (59%). Straightforward navigation.
Frequently Asked Questions
The longest stretch is about 12.6 miles on NH 101. 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 0.8 miles: Navigation decision point; at 1 miles (NH 101): Merge point - match speed before joining; at 13.6 miles: Exit ramp - move to the correct lane early.
Yes. A round trip is manageable in a single day if you plan a break at Londonderry, 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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