Portsmouth to Sunapee is 96.5 miles and takes about 2h via I-95 and I-89, with a fuel budget near $16 and enough daylight to finish in a day. This trip stays within New Hampshire, connecting the Northeast coast to the western part of the state. With over 95% of the drive on highways, it's a straightforward point-to-point excursion. This route is ideal if you're looking for a quick drive without extensive planning, perfect for a single-day adventure.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
48.3 miles from Portsmouth, NH
A natural place for your longest stop of the day
, about 59m into the drive
.
Main Roads
Road
Distance
Duration
I 89
34.7 mi
40m
Exeter-Hampton Expressway
30.4 mi
35m
I 95
8.8 mi
10m
Everett Turnpike
7 mi
8m
I 93
6.4 mi
7m
NH 11
5.4 mi
9m
Market Street
1 mi
2m
Hanover Street
0.1 mi
<1m
Longest stretch:
I 89
— 34.7 mi, about 40m
Traffic on I-95
Hour-of-day weekday pattern from 37 FHWA count stations on your route.
Peak
3 PM
~3,308 veh/hr typical
· worst 4,816
Quietest
2 AM
~197 veh/hr
Peak-to-quiet ratio
16.8×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 105 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Portsmouth, NH and Sunapee, NH.
1
Start on US 1
406 ft·15 sec·Congress Street
2
Turn right onto Fleet Street
462 ft·17 sec·Fleet Street
Use the right lane.
3
Turn right onto Hanover Street
0.1 mi·26 sec·Hanover Street
4
At end of road, turn left onto Market Street
1.0 mi·2 min·Market Street
Use the left lane.
5
Take the ramp
0.3 mi·35 sec
Toward I 95 South: Hampton, BostonUse the left lane.
6
Merge onto I 95
8.8 mi·10 min·I 95
Use the straight / slight right lanes.
7
Take the exit
0.6 mi·1 min
Exit 2Toward NH 101: Hampton, ManchesterUse the slight right lane.
8
Keep slight right at fork
0.4 mi·50 sec
Toward 101 West: Manchester, Concord, Exeter
9
Merge onto NH 101
30 mi·35 min·Exeter-Hampton Expressway
10
Take the exit
0.5 mi·38 sec
Toward I 93 North: ConcordUse the straight / slight right lanes.
11
Merge onto I 93
6.4 mi·7 min·I 93
12
Keep slight left at fork onto I 93
7.0 mi·8 min·Everett Turnpike
13
Take the exit
0.5 mi·1 min
Toward I 89 North: Lebanon, White River Junction Vermont
14
Keep slight right at fork
0.2 mi·42 sec
Toward I 89 North: Lebanon, White River Junction VermontUse the slight right lane.
15
Merge onto I 89
35 mi·40 min·I 89
16
Take the exit onto NH 11
0.2 mi·31 sec·NH 11
Exit 12Toward NH 11 West: New London, Sunapee, Newport, Claremont
17
Keep slight left at fork onto NH 11
154 ft·11 sec·NH 11
Exit 12Toward NH 11 West: New London, Sunapee, Newport, Claremont
18
Continue on NH 11
5.2 mi·9 min·NH 11
19
Arrive at destination
NH 11
Trip Plan
For this 2-hour drive, leaving in the morning is recommended to maximize your time in Sunapee. Since it's a relatively short trip, you won't need to plan for extensive stops, but keep an eye on your fuel. The estimated fuel cost is around $16, so ensure your tank is adequately filled before departing Portsmouth. Pay attention to signage as you approach your destination, as the transition from highway to local roads can sometimes be quick.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 48.3 miles from Portsmouth, NH, or about 59m into the drive.
The longest continuous stretch on this route runs about 34.7 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 21 miles or 28m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 48.3 miles or 59m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 36m
Traffic, exits, and arrival timing usually matter more near Sunapee, NH than in the middle of the route.
Before You Leave
+
Open the route before leaving Portsmouth, NH so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Portsmouth, NH
This is one driving day of about 96.5 miles and 2h.
Your first comfortable stop window is around 21 miles from Portsmouth, NH.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on I 89 for about 34.7 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 16
5 decision points cluster between mile 0.3 and 91.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
0.3 mi into trip|~0m in|Market Street
At end of road, turn left onto Market Street
Lane positioning matters here
Use the left lane.
7
1.3 mi into trip|~3m in
Take the ramp toward I 95 South: Hampton, Boston
Lane positioning matters here. Multiple destination signs - pick the right one
Use the left lane.
Toward I 95 South: Hampton, Boston
8
10.4 mi into trip|~15m in
Take the exit toward NH 101: Hampton, Manchester
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 2
Toward NH 101: Hampton, Manchester
8
56.1 mi into trip|~1h 9m in
Keep slight right at fork toward I 89 North: Lebanon, White River Junction Vermont
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward I 89 North: Lebanon, White River Junctio...
8
91.3 mi into trip|~1h 51m in|NH 11
Keep slight left at fork onto NH 11 toward NH 11 West: New London, Sunapee, Newport, Claremont
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Exit 12
Toward NH 11 West: New London, Sunapee, Newport...
Fuel & Cost
Regular Gas
$16.69 one way
$33.37 round trip
$4.39/gal25.4 MPG avg34 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.90
$18.61
$37.22
premium
$5.27
$20.03
$40.05
diesel
$6.28
$23.84
$47.69
Estimated Tolls: $0.49
Everett Turnpike
(7 mi)$0.49
Toll estimates based on average 2024-2025 rates. EZ-Pass/SunPass discounts may lower the actual cost.
Estimated Trip Cost (one way, 1 person)
Fuel
$17
Tolls
$0
Meals
$25–$50
Total
$42–$67
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 33.8 kg one way.
Prices: EIA weekly data, 2026-10-19.
Driving Electric?
About $10 in charging
· 0 stops
· 68% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
29
0
$10.13
$4.63
Efficient EV
24.1
0
$8.44
$3.86
EV Truck/SUV
38.6
0
$13.51
$6.18
Gas CO2
34 kg
EV CO2
11 kg (68% 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.
Forecast as of Oct 23, 2026
Origin
Portsmouth, NH
Evening
in Portsmouth on Saturday
Local time
8:52 PM
EDT
Current temp
34°F
Mostly Clear
N 5 to 10 mph0% chanceLive forecast
Destination
Sunapee, NH
Evening
in Sunapee on Saturday
Local time
8:52 PM
EDT
Current temp
33°F
Mostly Clear
N 5 mph0% chanceLive forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
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
1 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
2h on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Saint-Gaudens National Historical Park
National Historical Park
Your National Park for the Arts preserves the home and studio of sculptor Augustus Saint-Gaudens (1848-1907). Here stories flow through a landscape of inspiration. Discover the history behind the capt...
16 mi from route
~40 min detour
$10
near mile 93.2
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is almost entirely on highways, with 96% of the 96.5 miles on them. You'll experience a long stretch of 34.7 miles on I-89, offering a good period of consistent cruising. The transition from highway to surface roads will likely occur near your destination in Sunapee. Expect a high volume of exits and potential for merging traffic as you navigate the Interstate system.
96% highway — fuel and pacing are the main things to plan.
19 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 34.7 mi on I 89.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on I 89 and Exeter-Hampton Expressway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.3 miles in near Market Street.
Driving Effort10/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 16 significant decision points across 96.5 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 0.3 miles (Market Street): Lane positioning matters here; at 1.3 miles: Lane positioning matters here. Multiple destination signs - pick the right one; at 10.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Elevation Profile
Gently rolling terrain
1,174 ft30 ft
Total Climb
1,373 ft
Total Descent
387 ft
Highest Point
1,174 ft
~89.6 mi in
Elevation Range
1,144 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Portsmouth, NH and Sunapee, NH, road signs point toward Manchester, 101 West: Manchester, Concord, Exeter, White River Junction Vermont and Newport - among others.
Doable as a same-day drive at 2h. Total distance: 96.5 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
2h drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (96%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 34.7 miles on I 89. The full list of main roads is in the Roads section above.
Expect about $0.49 in tolls one way, starting with Everett Turnpike. Most Northeast and Midwest toll agencies accept E-ZPass; in the West and Texas, transponders like TxTag or FasTrak apply. If you do not have a transponder, cashless tolling plates will mail a bill to the vehicle's registered address — usually with a surcharge, so a rental-car toll pass is often cheaper than paying by mail.
Yes — we found about 8 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Sunapee, NH before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. There are 8 rest areas along the route for bathroom stops.
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 0.3 miles (Market Street): Lane positioning matters here; at 1.3 miles: Lane positioning matters here. Multiple destination signs - pick the right one; at 10.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Saint-Gaudens National Historical Park. See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at Sunapee, NH before heading back.
