This is the longest race in the series at 9.3 miles (15k). If you haven't done this race in a few years, you'll notice it starts near the parking area - you no longer have to walk a mile to the starting line!
The course provides great views of the Little Blackfoot River with a net uphill on the way to scenic Blackfoot Meadow (4.6 mi). Take in the view before turning around and heading back downhill. Watch for toe-snagging roots as well as runners coming toward you. You will cross the river twice, once with an opportunity to get your feet wet. If you're lucky you'll see a moose in the distance.