Head to gorgeous Queens Bay on Flathead Lake in mid-August for the Lake Monsters' open water swimming event, where you can choose from 1 mile, 5K, or 10K distances while supporting local youth swimming. August is prime time to experience Flathead Lake's pristine waters in one of Montana's most picturesque locations. Volunteers are needed to support kayak and SUP paddlers, so consider lending a hand at this fun community event!