How far is Milton, NH from Portsmouth, NH?
The driving distance from Milton, NH to Portsmouth, NH is about 31.6 miles (50.9 km), with a travel time of about 00h 42m by car.
- The straight-line flight distance is about 25.8 miles (41.5 km).
- For a round trip, plan for roughly 01h 25m 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 42m.
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.
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 Milton and Portsmouth.
Turn-by-Turn Driving Directions
Step-by-step road directions between Milton and Portsmouth.
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1
Start on Dawson Street
147 m · 26 sec · Dawson Street
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2
Turn left onto Mill Street
51 m · 11 sec · Mill Street
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3
Turn right onto White Mountain Highway
1.5 km · 2 min · White Mountain Highway
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4
Turn right onto Farmington Road
1 mi · 2 min · Farmington Road
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5
Turn left onto NH 16, Spaulding Turnpike: Portsmouth, Rochester
1472 ft · 41 sec
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6
Merge slight left onto Spaulding Turnpike
26.3 mi · 35 min · Spaulding Turnpike
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7
Take the exit slight left toward I 95 North
1.5 km · 2 min
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8
Enter the roundabout and take exit 3 toward Portsmouth Traffic Circle
692 ft · 20 sec
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9
Exit the rotary onto US 1 Bypass North: Portsmouth, Woodbury Avenue
1.6 km · 2 min
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10
Turn left onto Submarine Way
566 ft · 18 sec · Submarine Way
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11
Turn right onto Market Street
1 km · 2 min · Market Street
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12
At the end of the road, turn right onto Congress Street
16 m · 1 sec · Congress Street
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13
Arrive at your destination
0 m · 1 sec · Congress Street
Car Route Details
A richer read on the saved driving route between Milton 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
26.3 mi · 00h 35m
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 Milton 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 Milton to Portsmouth?
The road trip is about 31.6 miles (50.9 km) and usually takes 00h 42m 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?
Somersworth is a useful midpoint, sitting about 15.7 miles from Milton and 16 miles from Portsmouth.
How much longer is the road route than the straight-line distance?
The direct path is about 25.8 miles (41.5 km), while the road route adds roughly 5.8 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 7:04 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.81 one way or $9.62 round trip. Estimated CO2 is about 10 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Milton and Mostly Sunny near Portsmouth.
Stop Ideas Near Somersworth
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 Somersworth.
Dover Transportation Center
Durham–UNH station
Wells Regional Transportation Center
Portsmouth, New Hampshire
Flight Path Map
This map shows the direct air route between Milton and Portsmouth. Straight-line distance: 25.76 mi (41.45 km).
#1 Milton
Town in Strafford County, New Hampshire, United States of America
| Population | 4,614 |
| Coordinates | 43.4098000, -70.9884000 |
| Altitude | 137 |
| 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: 51 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 03m |
| 40 mph (64.37 km/h) | 00h 47m |
| 50 mph (80.47 km/h) | 00h 37m |
| 60 mph (96.56 km/h) | 00h 31m |
| 70 mph (112.65 km/h) | 00h 27m |
| 80 mph (129 km/h) | 00h 23m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.29 | $4.81 | $9.62 |
| Mid-grade | $4.88 | $5.47 | $10.94 |
| Premium | $5.34 | $5.98 | $11.95 |
| Diesel | $6.35 | $7.11 | $14.23 |
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