To travel out and back to Eielson, allowing time for wildlife sightings, bathroom breaks, and one or two short hikes, it takes one full day to visit Eielson. It is a 4 to 4.5 hour bus ride, one-way, from the front of the park to Eielson. With one or two hours spent hiking and exploring here, plan on 8 to 10 hours for the trip out to Eielson.