Flint Feather is a harder alternative to the Grouse Grind & BCMC. Situated between the 2 trails it follows a steep ridge with a creek on the right most of the way up. The trail is not high traffic engineered trails like the Grind or much of the BCMC. it is very primitive and a bit hard to follow in a few spots. It is not a race. it is great weekly training for summer activities.