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Estimate road distance and drive time from air distance
Driving distance is the actual road distance between two locations, typically 20-50% longer than the straight-line (air) distance due to road networks, terrain, and detours.
Enter a distance to see estimates.
| Route | Air | Drive | Time |
|---|---|---|---|
| NYC → Washington DC | 204 mi | 226 mi | 4h 00m |
| LA → San Francisco | 347 mi | 382 mi | 6h 00m |
| London → Edinburgh | 332 mi | 405 mi | 7h 15m |
| Paris → Barcelona | 515 mi | 647 mi | 10h 30m |
| Sydney → Melbourne | 442 mi | 536 mi | 8h 45m |
| NYC → Chicago | 713 mi | 790 mi | 12h 00m |
Formula
Driving Distance = Air Distance × Road Factor; Drive Time = Driving Distance ÷ Average SpeedAir Distance = straight-line distance between two points
Road Factor = multiplier based on road type (1.2 for highways, up to 1.5 for mountain roads)
Average Speed = expected average driving speed including stops
Worked Example
Los Angeles to San Francisco
Did you know? The U.S. Interstate Highway System spans 48,756 miles and carries about 25% of all vehicle traffic in the country despite representing only 1% of total road mileage (source: Federal Highway Administration).
Sources
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