The cable included is 6' long. The USB specifications say the maximum cable length should not exceeded 16'.

If you need a longer distance you could use one of the following products:

Belkin USB Active Extension Cable $24.00
With these cables a USB device can go beyond the 16' cable limitation. With the Belkin USB Active Extension Cable, you can connect up to four of these cables in a series along with a device cable for a total operating distance of up to 80 feet.

USB Cat 5 Line Extender $89.00
Extend your USB peripherals up to 150 foot using regular CAT5/5e/6 RJ45 cable. This repeater cable has built-in buffer & actively regenerates the signals to preserve data integrity.

Digi AnywhereUSB $240
allows USB devices to communicate as an Ethernet device