Mail while on course - Mail will be delivered during a re-supply or at the end of course. Any undelivered mail received after the course will be forwarded to your home address. To ensure a timely delivery, please make sure letters and mail have arrived at least 3 days prior to the course end date. Packages and letters may take up to a week to be delivered to our base camp so plan accordingly. Packages are subject to opening prior to delivery to the student. 

65‐Day Semesters: 8 resupplies, roughly one every 7‐10 days.
30‐Day Semesters: 3 resupplies, roughly one every 7‐10 days.
22‐Day Courses: 2 resupplies, roughly 1 every week
14‐Day Courses: 1 resupply, roughly half way through course.
10‐Day Courses: Up to 1 resupply possible, depending on course type.
<10 Day Courses: No resupply scheduled. Mail will be delivered after course.

For the Yosemite Backpacking to San Francisco Urban Service courses, use this address only to send mail:

Student Name & Course Number 
c/o Outward Bound California
1539 Pershing Drive
San Francisco, CA 94129

For Courses in the High Sierra (including Yosemite), use these addresses to send mail: