"CAT-5 Ethernet cables are to be used. Contestants may use any cable they wish, as long as it is capable of carrying 100Mb/s prior to competition. During competition, the colors red, blue, and yellow are used for the 7, 15, and 25 foot cables resepectively."
Although I'd have a definite advantage if it was untangling a 500m run of 24-pair multicore running round the battlements of a medieval castle in Romania at 3 in the morning. Done that.