Ultrarunner Karl Meltzer discusses how he broke the Appalachian Trail thru-hike record, something he’s been chasing for nearly a decade. (1:56)Learn how to run better off-road with pro tips from an experienced—and really fast—trail runner. (28:35)In the Kick, a community rallies around a young runner with autism, “Elvis Presley” wins a marathon in Las Vegas, and how to stay motivated during the upcoming holidays. (36:58)This week's episode is brought to you by Jabra. Listeners can go to jabra.com/runnersworld to sign up for exlusive discounts and special offers on Jabra products like the Jabra Elite Sport wireless earbuds.  Check out our show page here. Follow us on Twitter (@rwaudio) and Facebook (Runner's World Audio).