Unofficial Trail Authority · 17-C · Revised 7 November 2026 · https://trailauthority.org/forms/17-c/ · Uncontrolled copy when printed. The Unofficial Trail Authority is an independent fictional organization. It is not a government agency or land-management authority.
17-C · Open
Request for Provisional Participant Number
A provisional participant number lets a day's papers tell two riders apart. It is not a license and not a permit to be on a trail. This page does not issue the number. It prepares a request you can print and bring to a Custodian, if an assessment is actually held.
The current large operation is Trans San Marcos, a trail speed assessment. A number for that day, once a day exists, means the interval can be filed under a mark instead of a guess. It does not reserve a place.
Do not enter a government identification number, a full date of birth, or a home address. A given name or a nickname is enough, and may be left off. Nothing on this page is transmitted.
Numbers already used in sample findings, including P-014, P-022, and P-031, are closed illustrations. They are not available for reuse. See the Custodian.