![Rj45 for spi connection](https://kumkoniak.com/33.jpg)
![rj45 for spi connection rj45 for spi connection](http://ww1.prweb.com/prfiles/2013/01/23/10355610/tsp8048c5s.jpg)
I suggest you buy a cable that is about twice your distance and test the SPI for reliablity with that. If you want to run at Mhz, you may have trouble.
![rj45 for spi connection rj45 for spi connection](https://ae01.alicdn.com/kf/HTB1M5nKgeySBuNjy1zdq6xPxFXaF/Wall-Plate-4-Ports-Network-Ethernet-LAN-CAT5-5e-RJ45-Socket-Panel-Faceplate-Home-Plug-Adapter.jpg)
SPI running at 100kHz or 400kHz maximum speed, it.It still is a somewhat of a hack approach as you cannot really take advantage of the twisted pairs with SPI to reduce noise.The parts are everywhere and cable is often shielded.Having said that, the easiest system to impliment is 8 wire internet cable and connectors RJ-45]. Speed is a consideration with any distance as transmission line losses and reflection of signals will come involved.SPI is intended for short distances like inside the same chassis if not actually on the same board].
![Rj45 for spi connection](https://kumkoniak.com/33.jpg)