| Napa to Bonham (Texas) | 1,491.06 mi (2,399.63 km) |
| Napa to Bonita (California) | 489.09 mi (787.11 km) |
| Napa to Bonita Springs (Florida) | 2,482.42 mi (3,995.07 km) |
| Napa to Bonney Lake (Washington) | 613.69 mi (987.65 km) |
| Napa to Boone (Iowa) | 1,515.61 mi (2,439.14 km) |
| Napa to Boone (North Carolina) | 2,221.34 mi (3,574.91 km) |
| Napa to Borger (Texas) | 1,165.31 mi (1,875.39 km) |
| Napa to Bossier City (Louisiana) | 1,653.88 mi (2,661.66 km) |
| Napa to Boston (Massachusetts) | 2,671.98 mi (4,300.14 km) |
| Napa to Bostonia (California) | 483.35 mi (777.87 km) |
| Napa to Bothell (Washington) | 654.75 mi (1,053.71 km) |
| Napa to Bothell East (Washington) | 657.03 mi (1,057.38 km) |
| Napa to Bothell West (Washington) | 656.95 mi (1,057.26 km) |
| Napa to Boulder (Colorado) | 919.67 mi (1,480.06 km) |
| Napa to Boulder City (Nevada) | 440.44 mi (708.82 km) |
