fastpacking noun2 •Running while carrying a backpack.The bad news: fastpacking. The good news: cougars view swiftly fleeing humans as food. But seriously, fastpacking is the backcountry equivalent of a 9-day, 18-nation tour of Europe. — 1997 •Backpacking with the goal of maximising the distance covered each day.The opposite of slackpacking is fastpacking, or powerhiking, which maximizes daily mileage by walking for long hours with only a few short stops. — 2011
