First and foremost, be sure to have a photo ID for check-in. Minors do not need a photo ID, but must have a parent or guardian present to sign the release of liability.
Wear comfortable, loose workout clothes that you aren't afraid to ruin and wear hiking shoes or cross-trainers suitable for uneven terrain. We recommend you not wear anything of value, like an iPod, jewelry, or a CamelBak, because it may get ruined or eaten by the mud. There will be water stations throughout the course, but keep in mind that you will be outside for most of the day. Keep an eye on the weather as the Tough Mountain Challenge approaches and pack accordingly. Outdoor showers will be available next to the finish if you want to wash the mud off.