How big are the rainbow trout?
A. The average rainbow in local lakes is 8-14 inches (20-30 cm). A great trout would be anything over 16″ (40cm) . An exceptional trout is anything that breaks 20″ (50cm). Destination fly-in lakes and rivers, the average trout is 14″ (35cm) and many reach 16-18″, however, there are many, many, many fish.