How far is Portsmouth, NH from Milton, NH?
The driving distance from Portsmouth, NH to Milton, NH is about 30.8 miles (49.6 km), with a travel time of about 00h 44m by car.
- The straight-line flight distance is about 25.8 miles (41.5 km).
- For a round trip, plan for roughly 01h 28m 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 44m.
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 Portsmouth and Milton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Portsmouth and Milton.
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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
-
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
26.2 mi · 34 min · Spaulding Turnpike
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9
Take the exit slight right toward NH 75, To NH 125: Milton, Farmington
1010 ft · 28 sec
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10
Keep slight right to continue on NH 75, To NH 125: Milton
546 ft · 15 sec
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11
Turn straight onto Farmington Road
1.2 km · 2 min · Farmington Road
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12
At the end of the road, turn left onto White Mountain Highway
1.5 km · 2 min · White Mountain Highway
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13
Turn left onto Mill Street
51 m · 9 sec · Mill Street
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14
Turn right onto Dawson Street
147 m · 20 sec · Dawson Street
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15
Arrive at your destination
0 m · 1 sec · Dawson Street
Car Route Details
A richer read on the saved driving route between Portsmouth and Milton.
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
26.2 mi · 00h 34m
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.
Mostly Sunny leaving Portsmouth and Sunny near Milton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Portsmouth to Milton?
The road trip is about 30.8 miles (49.6 km) and usually takes 00h 44m 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 15.4 miles from Portsmouth and 15.4 miles from Milton.
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 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 $4.68 one way or $9.36 round trip. Estimated CO2 is about 9.7 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Portsmouth and Sunny near Milton.
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 Portsmouth and Milton. Straight-line distance: 25.76 mi (41.45 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 Milton
Town in Strafford County, New Hampshire, United States of America
| Population | 4,614 |
| Coordinates | 43.4098000, -70.9884000 |
| Altitude | 137 |
| Country | United States |
End: Milton (-70.9884, 43.4098)
Estimated Travel Time
Distance: 50 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 01m |
| 40 mph (64.37 km/h) | 00h 46m |
| 50 mph (80.47 km/h) | 00h 36m |
| 60 mph (96.56 km/h) | 00h 30m |
| 70 mph (112.65 km/h) | 00h 26m |
| 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 | $4.68 | $9.36 |
| Mid-grade | $4.88 | $5.32 | $10.65 |
| Premium | $5.34 | $5.82 | $11.63 |
| Diesel | $6.35 | $6.92 | $13.85 |
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