A single person traveling alone for the entire length of a journey
More than one person during any part of a journey
The Soloists Code of Integrity
Solo means being alone for the full length of the journey.
A soloist may not tack onto another team or soloist and still claim to be solo, they should be breaking trail for the majority of the route.
Soloists should only engage in transitory encounters with other teams or soloists.
If a soloist is forced to camp next to another team due to a confined campsite (narrow valley or crevassed area etc) this should be no longer than one night unless forced to remain due to uncontrollable circumstances.