How far is Portsmouth, NH from Lancaster, NH?
The driving distance from Portsmouth, NH to Lancaster, NH is about 146 miles (235 km), with a travel time of about 03h 19m by car.
- The straight-line flight distance is about 105.6 miles (170 km).
- For a round trip, plan for roughly 06h 39m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM EST.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 03h 19m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
Human settlement in Belknap County, New Hampshire, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Portsmouth and Lancaster.
Turn-by-Turn Driving Directions
Step-by-step road directions between Portsmouth and Lancaster.
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1
Start on Congress Street
954 ft · 34 sec · Congress Street
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2
Turn right onto Maplewood Avenue
1.1 km · 2 min · Maplewood Avenue
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3
Turn left onto Cutts Street
139 m · 16 sec · Cutts Street
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4
Turn slight right
1 km · 1 min
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5
Exit the rotary onto NH 16 North: Concord, Rochester
2261 ft · 51 sec
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6
Take the exit straight
961 ft · 15 sec
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7
Keep slight left to continue on Spaulding Turnpike North, NH 16 North, US 4 West
1364 ft · 21 sec
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8
Merge slight left onto Spaulding Turnpike
3.8 mi · 5 min · Spaulding Turnpike
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9
Take the exit slight right toward US 4: Dover Point Road, Durham-UNH, Concord
1594 ft · 39 sec
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10
Keep slight left to continue on US 4: Durham-UNH, Concord
72 m · 8 sec
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11
Turn left
1833 ft · 52 sec
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12
Enter the roundabout and take exit 2 toward Boston Harbor Road
37 m · 3 sec · Boston Harbor Road
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13
Exit the roundabout onto Boston Harbor Road
811 ft · 22 sec · Boston Harbor Road
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14
Continue on Scammell Bridge
1132 ft · 28 sec · Scammell Bridge
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15
Continue on Piscataqua Road
8.8 mi · 14 min · Piscataqua Road
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16
Enter the roundabout and take exit 2 toward Lee Circle
48 m · 5 sec · Concord Road
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17
Exit the rotary onto Concord Road
2575 ft · 56 sec · Concord Road
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18
Continue on Old Concord Turnpike
1.8 mi · 3 min · Old Concord Turnpike
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19
Continue on Old Turnpike Road
5.1 mi · 7 min · Old Turnpike Road
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20
Continue on First New Hampshire Turnpike
7.8 mi · 13 min · First New Hampshire Turnpike
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21
Continue on Dover Road
4.3 mi · 7 min · Dover Road
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22
Enter the roundabout and take exit 2 toward Epsom Circle
81 m · 7 sec · Dover Road
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23
Exit the rotary onto Dover Road
4.9 mi · 8 min · Dover Road
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24
Keep slight right
4.6 mi · 7 min
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25
Take the exit slight right toward I 93 North, US 4 West: Plymouth
16 mi · 18 min
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26
Continue on Sen Styles Bridges Highway
1.2 km · 47 sec · Sen Styles Bridges Highway
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27
Continue on Styles Bridges Highway
48.9 mi · 53 min · Styles Bridges Highway
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28
Continue on Franconia Notch Parkway
7.7 mi · 12 min · Franconia Notch Parkway
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29
Take the exit slight right toward US 3 North: Twin Mountain, Lancaster
10.4 mi · 16 min
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30
Continue on US Route 3 North
6.1 mi · 9 min · US Route 3 North
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31
Continue on Twin Mountain Road
2.3 mi · 4 min · Twin Mountain Road
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32
Continue on Daniel Webster Highway
142 m · 11 sec · Daniel Webster Highway
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33
Continue on Lancaster Road
2 mi · 3 min · Lancaster Road
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34
Continue on Prospect Street
6.3 mi · 9 min · Prospect Street
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35
Continue on Main Street
868 ft · 25 sec · Main Street
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36
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Portsmouth and Lancaster.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Styles Bridges Highway
Continue on Styles Bridges Highway
48.9 mi · 00h 53m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Sunny leaving Portsmouth and Mostly Sunny near Lancaster.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Portsmouth to Lancaster?
The road trip is about 146 miles (235 km) and usually takes 03h 19m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
New Hampton is a useful midpoint, sitting about 72.9 miles from Portsmouth and 73.1 miles from Lancaster.
How much longer is the road route than the straight-line distance?
The direct path is about 105.6 miles (170 km), while the road route adds roughly 40.4 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 6:00 AM to 8:00 AM EST. If you want a more comfortable same-day return, try to leave by 10:20 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $21.54 one way or $43.07 round trip. Estimated CO2 is about 45.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Portsmouth and Mostly Sunny near Lancaster.
Stop Ideas Near New Hampton
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 New Hampton.
New Hampton, New Hampshire
Plymouth, New Hampshire
Tilton, New Hampshire
Concord, New Hampshire
Flight Path Map
This map shows the direct air route between Portsmouth and Lancaster. Straight-line distance: 105.62 mi (169.98 km).
#1 Portsmouth
City in Rockingham County, New Hampshire, United States
| Population | 21,557 |
| Coordinates | 43.0770400, -70.7576600 |
| Altitude | 6 |
| Country | United States |
#2 Lancaster
Town in New Hampshire, United States
| Population | 3,234 |
| Coordinates | 44.4889500, -71.5692500 |
| Altitude | 263 |
| Country | United States |
End: Lancaster (-71.56925, 44.48895)
Estimated Travel Time
Distance: 235 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 51m |
| 40 mph (64.37 km/h) | 03h 39m |
| 50 mph (80.47 km/h) | 02h 55m |
| 60 mph (96.56 km/h) | 02h 26m |
| 70 mph (112.65 km/h) | 02h 05m |
| 80 mph (129 km/h) | 01h 49m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.18 | $21.54 | $43.07 |
| Mid-grade | $4.80 | $24.73 | $49.46 |
| Premium | $5.26 | $27.07 | $54.15 |
| Diesel | $6.35 | $32.68 | $65.36 |
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 · Oct 31, 2026