Cool thread.

For me, I think its Canberra to Sydney to pick up a reco M21 so 280 ks.

But the most trying one (if this counts) was about 80ks (from 80ks north of Seymour on the Hume back to Seymor) for a radiator when I was a young tacker after the Tory boiled on a hot afternoon and pretty much all the water evaporated! (I'd only had it three weeks at that stage). Must have looked the part, the steam was blowing out the driver side of the bonnet in a long trail, temp guage at max. I put it on 110 and kept my fingers crossed! Got into seymour at 5:15 pm, found the radiator people just closing, the owner operator of the place just grinned. But, they were great of course. I was back on the highway by about 6:30 (with $120 less in me pocket for fuel and dinner!).