Hikers should arrive early to check-in, sign the Sierra Club's release of liability, put on numbered bibs, and receive last-minute instructions from hike personnel. Upon checkin, you’ll receive your bib number (when you sign in, it will be next to your name). You will also need to turn in or fill out a medical form if you did not turn yours in prior to the hike. Both the liability information sheet and medical form will be emailed to you prior to the hike.

Names on the roster will be listed alphabetically and the bib numbers will also have already been assigned alphabetically. Your bib must be pinned on your front, preferably the chest area, and be visible at all times. Bibs are critical in allowing volunteers to identify you. White bibs indicate 100K hikers, while orange ones indicate 50K hikers. If you switched hikes after the registration deadline, you will retain the bib and number assigned to you for your original registration.

Volunteers will be wearing ODH T-shirts. Let them know of any questions or concerns and please follow their instructions. Be prepared for a crowd and waiting. It is almost always chilly and it may be raining, so dress accordingly. Do not jump the start and be courteous to your fellow hikers. Drinking water will be available for you to fill a bottle. An area will be set aside for you to place a bag for transport to the end point.

For the 100K
Hikers should arrive by 2:15 AM (see Getting to the 100K Start). There are no convenient bathrooms near the start. The first bathrooms on the trail are near Fletchers Boat House about 3 miles or 45 minutes into the hike. Plan accordingly.

For the 50K
Hikers not on the ODH shuttle should arrive by 9 AM (see Getting to the 50K Start). Portable toilets will be available, but lines may be long. Be patient.