Ok here's the breakdown on both roads. Without boat in tow, from Campbell River the drive to Zeballos is just over 2 hrs while the drive to Tahsis is almost 3 hrs. The 40 km to Zeballos is completely gravel until you hit town, there are 3 or 4 notable hills, the worse being at 29km and it's not really a brake burner just sometimes a bit bumpy due to the nature of the original road base. I drove it last Tuesday and it was in pretty good shape, it is regularly maintained. The 62km road to Tahsis from Gold River is a mix of pavement and gravel-maybe 65% gravel and has a few more steeper hills w one major hill w switchbacks which can be a bit of a brake burner and a few other less notable hills. The road to Tahsis, sees more steady maintenance. Were I to choose, I would probably launch at Gold River and go from there but then I don't like towing my boat on gravel. That said, either road is good enough, Zeballos shorter and a few more bumps, while Tahsis is a bit longer but smoother and one or two significantly steeper hills. Hope that helps.