Cap's Cycle is actually in New Westminister, very close to the Central Valley Greenway, a bike route where a lot of it runs through park, lanes and abit on quieter roads go west and into downtown Vancouver.
http://www.translink.ca/en/Getting-A...ling-Maps.aspx Go to CVG Map on page. Then from the Central Valley Greenway, we would cross Broadway St. and hook into the Adanac St. bike route which takes one through some quiet older neighbourhoods, some bike mural art, past old historic downtown Chinatown, etc.
CVG has sections which is hard-packed fine gravel and the rest is paved. Large sections of the CVG never gets too busy on weekends. Which is quite doable with road bikes, if tires aren't very thin/no thread. We have done day long 100 km. round trips between Golden Ears Bridge in Langley and downtown Vancouver. We never cycled back home on the Barnett Highway. We used the CVG and east of that that other paths. We headed out on the Barnett Highway early morning on weekends to get out to Golden Ears Bridge, when car traffic was minimal.
My partner is a long time cycling advocate in Vancouver, he knows (and was involved in working the municipalities) on some of these signed/laned bike routes.
I worked on the capital construction project for the Golden Ears Bridge. Here is are my stories:
http://cyclewriteblog.wordpress.com/...-i-never-knew/ http://thirdwavecyclingblog.wordpres...ed-work-areas/
Have a good, safe ride. Just tell yourself, there are beautiful quiet areas maybe less than 2-3 streets parallel to the mass group bike ride route!!
****I just looked at this yrs.' route. It is a lot better ..and more scenic into the downtown Vancouver area. No matter what, there will be huge wave of cyclists from Seattle on part of the popular Seaside bike path (that runs under the Burrard Bridge).