Каламунда в Мундаринг Вейр и обратно

15 km each direction out and back (30-31km total) from the Kalamunda Learning Centre carpark to Mundaring Weir running mostly on the Bibbulmun trail with a mix of fire paths and single track. Unsure if this is walkable as an out and back in a single day, make sure you take enough water etc.