Portage Creek is the easiest float near Anchorage, a 1-2 hour float down flat water with the option of take outs at mile 4.5 or 6.5. With kids, however, you’ll want to turn it into a half-day adventure, stopping on gravel bars to play and explore. You’re never far from Portage Valley Road, which can provide a sense of comfort. Even though the road does not have a deep wilderness feel, you are surrounded by several-thousand foot mountains which rise less than a mile from the river. You’ll float past four named glaciers if you go all the way to Turnagain Arm.