How far is Herndon, VA from Manassas, VA?
The driving distance from Herndon, VA to Manassas, VA is about 20 miles (32.2 km), with a travel time of about 00h 32m by car.
- The straight-line flight distance is about 15.8 miles (25.5 km).
- For a round trip, plan for roughly 01h 04m 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 32m.
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.
Unincorporated community located in Northern Virginia
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain Showers
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Herndon and Manassas.
Turn-by-Turn Driving Directions
Step-by-step road directions between Herndon and Manassas.
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1
Start on Spring Street
79 m · 11 sec · Spring Street
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2
Turn right onto Locust Street
2568 ft · 1 min · Locust Street
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3
Turn left onto Elden Street
1.2 km · 2 min · Elden Street
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4
Continue on Centreville Road
1 mi · 2 min · Centreville Road
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5
Turn right onto Coppermine Road
987 ft · 33 sec · Coppermine Road
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6
Turn left onto River Birch Road
3130 ft · 2 min · River Birch Road
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7
Turn straight onto Frying Pan Road
139 m · 9 sec · Frying Pan Road
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8
Keep slight left to continue on VA 28 South: Centreville
2292 ft · 49 sec
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9
Merge slight left onto Sully Road
8.2 mi · 12 min · Sully Road
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10
Continue on Centreville Road
6.3 mi · 13 min · Centreville Road
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11
Continue on Church Street
1680 ft · 1 min · Church Street
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12
Turn left onto Grant Avenue
47 m · 3 sec · Grant Avenue
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13
Arrive at your destination
0 m · 1 sec · Grant Avenue
Car Route Details
A richer read on the saved driving route between Herndon and Manassas.
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.
Sully Road
Merge slight left onto Sully Road
8.24 mi · 00h 12m
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.
Chance Rain Showers leaving Herndon and Rain Showers Likely near Manassas.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Herndon to Manassas?
The road trip is about 20 miles (32.2 km) and usually takes 00h 32m 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?
Chantilly is a useful midpoint, sitting about 9.3 miles from Herndon and 10.7 miles from Manassas.
How much longer is the road route than the straight-line distance?
The direct path is about 15.8 miles (25.5 km), while the road route adds roughly 4.2 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 7:26 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.94 one way or $5.88 round trip. Estimated CO2 is about 6.3 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers around Herndon and Rain Showers Likely near Manassas.
Stop Ideas Near Chantilly
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Herndon Old Town Hall
Manassas Park City Hall
Town Hall Pool
Old Town Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Chantilly.
Manassas station
Burke Centre
Lorton station
Woodbridge station
Flight Path Map
This map shows the direct air route between Herndon and Manassas. Straight-line distance: 15.84 mi (25.5 km).
#1 Herndon
Town in Virginia, United States
| Population | 24,573 |
| Coordinates | 38.9695500, -77.3861000 |
| Altitude | 110 |
| 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: 32 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 39m |
| 40 mph (64.37 km/h) | 00h 30m |
| 50 mph (80.47 km/h) | 00h 24m |
| 60 mph (96.56 km/h) | 00h 20m |
| 70 mph (112.65 km/h) | 00h 17m |
| 80 mph (129 km/h) | 00h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.14 | $2.94 | $5.88 |
| Mid-grade | $4.63 | $3.29 | $6.58 |
| Premium | $5.01 | $3.56 | $7.12 |
| Diesel | $6.21 | $4.41 | $8.82 |
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 · Oct 15, 2026