How far is Portsmouth, VA from Manassas, VA?
The driving distance from Portsmouth, VA to Manassas, VA is about 186.2 miles (299.6 km), with a travel time of about 02h 58m by car.
- The straight-line flight distance is about 147.1 miles (236.8 km).
- For a round trip, plan for roughly 05h 56m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 02h 58m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 Frederick County, Maryland, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
The map below follows the saved road route between Portsmouth and Manassas.
Turn-by-Turn Driving Directions
Step-by-step road directions between Portsmouth and Manassas.
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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
11.3 mi · 14 min · Hampton Roads Beltway
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12
Keep slight left to continue on I 64 West: Williamsburg, Richmond
1.1 km · 54 sec
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13
Merge slight left
1.4 mi · 2 min
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14
Keep slight left
61.1 mi · 1 hr 8 min
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15
Take the exit slight right toward I 295, US 60: Washington, Rocky Mount NC
2434 ft · 32 sec
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16
Keep slight right to continue on I 295 North: Washington
1.3 mi · 3 min
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17
Merge slight left onto Korean War Veterans Memorial Highway
11.9 mi · 13 min · Korean War Veterans Memorial Highway
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18
Take the exit slight left toward I 95 North: Washington
2.4 mi · 3 min
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19
Merge slight right
45.7 mi · 50 min
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20
Keep slight right
1.6 mi · 2 min
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21
Keep slight left
1 mi · 1 min
-
22
Merge slight left
18.6 mi · 21 min
-
23
Take the exit slight right toward VA 234 North: Manassas
1717 ft · 42 sec
-
24
Continue on Dumfries Road
14 mi · 21 min · Dumfries Road
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25
Take the exit slight right
1511 ft · 43 sec
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26
Turn left onto Dumfries Road
1.7 mi · 3 min · Dumfries Road
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27
Continue on Grant Avenue
1641 ft · 41 sec · Grant Avenue
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28
Enter the roundabout and take exit 2 toward Grant Avenue
20 m · 1 sec · Grant Avenue
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29
Exit the roundabout onto Grant Avenue
2230 ft · 54 sec · Grant Avenue
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30
Arrive at your destination
0 m · 1 sec · Grant Avenue
Car Route Details
A richer read on the saved driving route between Portsmouth and Manassas.
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 comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Portsmouth and Sunny near Manassas.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Portsmouth to Manassas?
The road trip is about 186.2 miles (299.6 km) and usually takes 02h 58m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Mechanicsville is a useful midpoint, sitting about 92.4 miles from Portsmouth and 93.7 miles from Manassas.
How much longer is the road route than the straight-line distance?
The direct path is about 147.1 miles (236.8 km), while the road route adds roughly 39.1 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 12:34 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $26.02 one way or $52.05 round trip. Estimated CO2 is about 58.4 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Portsmouth and Sunny near Manassas.
Stop Ideas Near Mechanicsville
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 Mechanicsville.
Richmond Main Street Station
Richmond Staples Mill Road station
Ashland
Petersburg station
Flight Path Map
This map shows the direct air route between Portsmouth and Manassas. Straight-line distance: 147.12 mi (236.77 km).
#1 Portsmouth
The most populous city in Portsmouth, Virginia.
| Population | 95,094 |
| Coordinates | 36.8354300, -76.2982700 |
| Altitude | 3 |
| Country | United States |
#2 Manassas
The county seat of Prince William County, Virginia.
| Population | 40,869 |
| Coordinates | 38.7509500, -77.4752700 |
| Altitude | 93 |
| Country | United States |
End: Grant Avenue (-77.475156, 38.750964)
Estimated Travel Time
Distance: 300 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 12m |
| 40 mph (64.37 km/h) | 04h 39m |
| 50 mph (80.47 km/h) | 03h 43m |
| 60 mph (96.56 km/h) | 03h 06m |
| 70 mph (112.65 km/h) | 02h 39m |
| 80 mph (129 km/h) | 02h 19m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $26.02 | $52.05 |
| Mid-grade | $4.43 | $29.10 | $58.20 |
| Premium | $4.78 | $31.39 | $62.78 |
| Diesel | $5.62 | $36.95 | $73.90 |
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.