Data transmission over up to 100 ft
It's mostly down to the cable - I've had cat7 cables running 600 Mbps over 35 metres down one pair with power down another pair. I've had 100 Mbps running 500 metres over a single (but very decent) coax. This was a single ended driver and cable-compensating receiver chip.

Choose your cable wisely and you can easily get the distance you want especially if you use a differential driver and receiver.