Hi trikin, we have done this loop on our motorbikes a couple of times in the last two years, thats why I would like to try on a Touring bicycle...The road is all paved , with recycled ashalt, it is good but a bit rough...meaning it has not had the big roller packers to smooth it out....On a skinny tire bike with high pressure tires , it may be a bit vibrating, but our touring bikes are 26 inch wheel and have 1.5 inch wide tires on them...so, I think we are going to give it a whirl come better weather....We may cheat and get a shuttle ride to Sooke and then pedal the rest to Renfrew, Cowichan and down to Duncan...we would probably use the TCT off road trail to Duncan from Cowichan,..its good, .. Hopefully we could do on a long weekend...Thanx Bob