You don’t have to plan from scratch. These rides pass close to Lazo, mapped and written up by route publishers around BC. The full maps and turn-by-turns live on their sites.
Comox Valley Circle— Let's Go Biking · 65 km ride, passing within a kilometre
Getting there with a bike: province-wide buses, ferries, and shuttles are listed under Transport (some serving Lazo may be listed there rather than here).