How far is Alexandria, VA from Herndon, VA?
The driving distance from Alexandria, VA to Herndon, VA is about 30.6 miles (49.3 km), with a travel time of about 00h 44m by car.
- The straight-line flight distance is about 21.5 miles (34.6 km).
- For a round trip, plan for roughly 01h 29m 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.
Census designated place
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms Likely
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Alexandria and Herndon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Alexandria and Herndon.
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1
Start on South Washington Street
23 m · 7 sec · South Washington Street
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2
Turn right onto King Street
96 m · 15 sec · King Street
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3
Turn right onto South Saint Asaph Street
842 ft · 41 sec · South Saint Asaph Street
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4
Turn right onto Duke Street
102 m · 19 sec · Duke Street
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5
Turn left onto South Washington Street
1260 ft · 51 sec · South Washington Street
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6
Turn right onto Gibbon Street
923 ft · 38 sec · Gibbon Street
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7
Turn left onto South Patrick Street
1157 ft · 34 sec · South Patrick Street
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8
Take the exit slight right toward I 95 South, I 495 West, I 95 North, I 495 East: Richmond, Baltimore
133 m · 11 sec
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9
Keep slight right to continue on I 95 South, I 495 West
3238 ft · 1 min
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10
Merge slight left onto Capital Beltway (Local)
5 mi · 6 min · Capital Beltway (Local)
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11
Keep slight right to continue on Capital Beltway
1.1 km · 48 sec · Capital Beltway
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12
Continue on Capital Beltway
2.4 mi · 3 min · Capital Beltway
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13
Keep slight right to continue on Capital Beltway
9.5 mi · 12 min · Capital Beltway
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14
Take the exit slight left toward VA 267 Toll West: Reston, Herndon, Dulles Airport
1614 ft · 39 sec
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15
Merge slight right onto Dulles Toll Road
1.1 mi · 1 min · Dulles Toll Road
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16
Keep slight left
1869 ft · 23 sec
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17
Merge slight right onto Dulles Toll Road
7.3 mi · 10 min · Dulles Toll Road
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18
Take the exit slight right toward VA 286: Fairfax County Parkway
1772 ft · 1 min
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19
Turn right onto Fairfax County Parkway
1.1 km · 1 min · Fairfax County Parkway
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20
Take the exit slight right
1384 ft · 38 sec
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21
Keep slight left to continue on SR 606 West: Elden Street
107 m · 12 sec
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22
Turn straight onto Elden Street
1.1 mi · 3 min · Elden Street
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23
Turn left onto Spring Street
13 m · 1 sec · Spring Street
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24
Arrive at your destination
0 m · 1 sec · Spring Street
Car Route Details
A richer read on the saved driving route between Alexandria and Herndon.
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.
Capital Beltway
Keep slight right to continue on Capital Beltway
9.49 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.
Showers And Thunderstorms Likely leaving Alexandria 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 Alexandria to Herndon?
The road trip is about 30.6 miles (49.3 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?
Merrifield is a useful midpoint, sitting about 15.3 miles from Alexandria and 15.3 miles from Herndon.
How much longer is the road route than the straight-line distance?
The direct path is about 21.5 miles (34.6 km), while the road route adds roughly 9.1 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 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:00 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.28 one way or $8.56 round trip. Estimated CO2 is about 9.6 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms Likely around Alexandria and Showers And Thunderstorms near Herndon.
Stop Ideas Near Merrifield
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
United States Capitol
D C Government
THEARC: Town Hall Education Arts Recreation Campus
District of Columbia Court
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Merrifield.
Burke Centre
Union Station
Lorton station
Washington Union Station
Flight Path Map
This map shows the direct air route between Alexandria and Herndon. Straight-line distance: 21.5 mi (34.6 km).
#1 Alexandria
A city in Virginia.
| Population | 158,726 |
| Coordinates | 38.8048400, -77.0469200 |
| Altitude | 12 |
| 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: 49 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 01m |
| 40 mph (64.37 km/h) | 00h 45m |
| 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 22m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $4.28 | $8.56 |
| Mid-grade | $4.43 | $4.78 | $9.57 |
| Premium | $4.78 | $5.16 | $10.32 |
| Diesel | $5.62 | $6.07 | $12.15 |
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.