How far is Portsmouth, VA from Herndon, VA?
The driving distance from Portsmouth, VA to Herndon, VA is about 201.6 miles (324.5 km), with a travel time of about 04h 06m by car.
- The straight-line flight distance is about 158.9 miles (255.8 km).
- For a round trip, plan for roughly 08h 12m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM EDT.
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 04h 06m.
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.
Town in Alabama, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Portsmouth and Herndon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Portsmouth and Herndon.
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1
Start on High Street
2505 ft · 56 sec · High Street
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2
Turn right onto Effingham Street
552 ft · 11 sec · Effingham Street
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3
Turn left onto London Boulevard
1.1 mi · 2 min · London Boulevard
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4
Take the ramp slight right toward US 58, VA 164: Western Freeway, Midtown Tunnel
996 ft · 19 sec
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5
Merge slight left onto Martin Luther King Freeway
1826 ft · 35 sec · Martin Luther King Freeway
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6
Continue on Western Freeway
6 mi · 8 min · Western Freeway
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7
Take the exit slight right toward VA 135: College Drive
1030 ft · 15 sec
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8
Keep slight right to continue on VA 135 North: College Drive
738 ft · 10 sec
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9
Turn straight onto College Drive
1.1 mi · 2 min · College Drive
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10
Take the ramp slight right toward I 664 North: Newport News, Hampton
2371 ft · 58 sec
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11
Merge slight left onto Hampton Roads Beltway
1.3 km · 1 min · Hampton Roads Beltway
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12
Continue on Monitor-Merrimac Memorial Bridge-Tunnel
4.3 mi · 5 min · Monitor-Merrimac Memorial Bridge-Tunnel
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13
Continue on Hampton Roads Beltway
6.2 mi · 8 min · Hampton Roads Beltway
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14
Keep slight left to continue on I 64 West: Williamsburg, Richmond
1.1 km · 54 sec
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15
Merge slight left
1.4 mi · 2 min
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16
Keep slight left
61.1 mi · 1 hr 8 min
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17
Take the exit slight right toward I 295, US 60: Washington, Rocky Mount NC
2434 ft · 32 sec
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18
Keep slight right to continue on I 295 North: Washington
1.3 mi · 3 min
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19
Merge slight left onto Korean War Veterans Memorial Highway
11.9 mi · 13 min · Korean War Veterans Memorial Highway
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20
Take the exit slight left toward I 95 North: Washington
2.4 mi · 3 min
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21
Merge slight right
45.7 mi · 50 min
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22
Keep slight right
1.6 mi · 2 min
-
23
Keep slight left
1 mi · 1 min
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24
Merge slight left
26.4 mi · 31 min
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25
Take the exit slight right toward VA 123 North: Occoquan, Lake Ridge
1400 ft · 34 sec
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26
Keep slight left to continue on VA 123 North: Occoquan, Lake Ridge
709 ft · 17 sec
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27
Continue on Gordon Boulevard
1 mi · 2 min · Gordon Boulevard
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28
Continue on Ox Road
8.9 mi · 13 min · Ox Road
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29
Take the exit straight toward VA 286 North: Fairfax County Parkway
2049 ft · 1 min
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30
Merge slight left onto Fairfax County Parkway
13 mi · 20 min · Fairfax County Parkway
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31
Turn left onto Fox Mill Road
3278 ft · 2 min · Fox Mill Road
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32
Turn right onto Monroe Street
1.2 km · 2 min · Monroe Street
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33
Continue on Van Buren Street
1.1 km · 2 min · Van Buren Street
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34
Turn left onto Spring Street
2204 ft · 1 min · Spring Street
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35
Arrive at your destination
0 m · 1 sec · Spring Street
Car Route Details
A richer read on the saved driving route between Portsmouth and Herndon.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 64 West
Keep slight left
61.1 mi · 01h 08m
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.
Mostly Sunny leaving Portsmouth and Showers And Thunderstorms near Herndon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Portsmouth to Herndon?
The road trip is about 201.6 miles (324.5 km) and usually takes 04h 06m 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?
Glen Allen is a useful midpoint, sitting about 100.8 miles from Portsmouth and 100.8 miles from Herndon.
How much longer is the road route than the straight-line distance?
The direct path is about 158.9 miles (255.8 km), while the road route adds roughly 42.7 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 6:00 AM to 8:00 AM EDT. If you want a more comfortable same-day return, try to leave by 8:48 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $28.16 one way or $56.33 round trip. Estimated CO2 is about 63.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Portsmouth and Showers And Thunderstorms near Herndon.
Stop Ideas Near Glen Allen
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Town Hall
Old City Hall
City of Richmond Virginia (City Hall)
City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Glen Allen.
Richmond Staples Mill Road station
Ashland
Richmond Main Street Station
Petersburg station
Flight Path Map
This map shows the direct air route between Portsmouth and Herndon. Straight-line distance: 158.93 mi (255.77 km).
#1 Portsmouth
The most populous city in Portsmouth, Virginia.
| Population | 95,094 |
| Coordinates | 36.8354300, -76.2982700 |
| Altitude | 3 |
| Country | United States |
#2 Herndon
Town in Virginia, United States
| Population | 24,573 |
| Coordinates | 38.9695500, -77.3861000 |
| Altitude | 110 |
| Country | United States |
End: Herndon (-77.3861, 38.96955)
Estimated Travel Time
Distance: 324 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 43m |
| 40 mph (64.37 km/h) | 05h 02m |
| 50 mph (80.47 km/h) | 04h 01m |
| 60 mph (96.56 km/h) | 03h 21m |
| 70 mph (112.65 km/h) | 02h 52m |
| 80 mph (129 km/h) | 02h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $28.16 | $56.33 |
| Mid-grade | $4.43 | $31.49 | $62.98 |
| Premium | $4.78 | $33.97 | $67.94 |
| Diesel | $5.62 | $39.99 | $79.97 |
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 Virginia · May 13, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.