The 2021 Castle Peak has many new additions, new course, new start and finish line and many new opportunities for volunteering. Castle Peak 100K will not be possible without your help so please consider donating some of your time on Race Weekend.
If you have questions about any of our volunteer needs, please email our volunteer coordinator Lesley Dellamonica at cpvolunteers@
Looking for some Trail Work opportunities?
Visit the Donner Party Mountain Runners Trail Stewardship page for local trail work days.