The Myra Station side of the canyon provides spectacular views and many trestles in the first few kilometers. If you are looking to cross Trestles and walk through Tunnels and don't have a whole lot of time, then this is the side of the canyon that you will want to visit.
Take the Myra Forest Service Road (well maintained) access, from the paved McCulloch road in East Kelowna (view map). The walk is very easy and is suitable for all ages.