How far is Farmington, NH from Portsmouth, NH?
The driving distance from Farmington, NH to Portsmouth, NH is about 30.3 miles (48.8 km), with a travel time of about 00h 43m by car.
- The straight-line flight distance is about 26.6 miles (42.8 km).
- For a round trip, plan for roughly 01h 27m 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 43m.
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.
County seat city in Strafford County, New Hampshire, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Farmington and Portsmouth.
Turn-by-Turn Driving Directions
Step-by-step road directions between Farmington and Portsmouth.
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1
Start on Main Street
1.5 mi · 3 min · Main Street
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2
Continue on State Route 153
2010 ft · 43 sec · State Route 153
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3
Turn left onto NH Route 11
2.2 mi · 4 min · NH Route 11
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4
Continue on Farmington Road
2.2 mi · 4 min · Farmington Road
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5
Take the exit slight right
552 ft · 16 sec
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6
Continue on NH 16 On-Ramp South
1625 ft · 25 sec · NH 16 On-Ramp South
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7
Merge slight left onto Spaulding Turnpike
20 mi · 26 min · Spaulding Turnpike
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8
Take the exit slight left toward I 95 North
1.5 km · 2 min
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9
Enter the roundabout and take exit 3 toward Portsmouth Traffic Circle
692 ft · 20 sec
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10
Exit the rotary onto US 1 Bypass North: Portsmouth, Woodbury Avenue
1.6 km · 2 min
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11
Turn left onto Submarine Way
566 ft · 18 sec · Submarine Way
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12
Turn right onto Market Street
1 km · 2 min · Market Street
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13
At the end of the road, turn right onto Congress Street
16 m · 1 sec · Congress Street
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14
Arrive at your destination
0 m · 1 sec · Congress Street
Car Route Details
A richer read on the saved driving route between Farmington and Portsmouth.
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.
Spaulding Turnpike
Merge slight left onto Spaulding Turnpike
20 mi · 00h 26m
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.
Sunny leaving Farmington and Mostly Sunny near Portsmouth.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Farmington to Portsmouth?
The road trip is about 30.3 miles (48.8 km) and usually takes 00h 43m 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?
Dover is a useful midpoint, sitting about 14.7 miles from Farmington and 15.6 miles from Portsmouth.
How much longer is the road route than the straight-line distance?
The direct path is about 26.6 miles (42.8 km), while the road route adds roughly 3.7 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 7:02 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.59 one way or $9.19 round trip. Estimated CO2 is about 9.5 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Farmington and Mostly Sunny near Portsmouth.
Stop Ideas Near Dover
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Old City Hall
Dover City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Dover.
Dover Transportation Center
Durham–UNH station
Portsmouth, New Hampshire
Exeter station
Flight Path Map
This map shows the direct air route between Farmington and Portsmouth. Straight-line distance: 26.58 mi (42.77 km).
#1 Farmington
Town in Strafford County, New Hampshire, United States
| Population | 6,951 |
| Coordinates | 43.3898000, -71.0650600 |
| Altitude | 87 |
| Country | United States |
#2 Portsmouth
City in Rockingham County, New Hampshire, United States
| Population | 21,557 |
| Coordinates | 43.0770400, -70.7576600 |
| Altitude | 6 |
| Country | United States |
End: Congress Street (-70.757617, 43.077054)
Estimated Travel Time
Distance: 49 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 00m |
| 40 mph (64.37 km/h) | 00h 45m |
| 50 mph (80.47 km/h) | 00h 36m |
| 60 mph (96.56 km/h) | 00h 30m |
| 70 mph (112.65 km/h) | 00h 25m |
| 80 mph (129 km/h) | 00h 22m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.29 | $4.59 | $9.19 |
| Mid-grade | $4.88 | $5.23 | $10.45 |
| Premium | $5.34 | $5.71 | $11.42 |
| Diesel | $6.35 | $6.80 | $13.59 |
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 15, 2026