Rules & Policies

The Basics

Violation of rules 1 and 2 will get you disqualified. If you are observed violating rule 3 (i.e., not having fun) we may withhold your post-race beer.

Pacers are not allowed due to the difficulty of providing adequate aid. C’mon, you can run 50 miles without a pacer!
No trekking poles.


In creating a fair and inclusive event, we believe it is important to provide policies that are clear, accepted, and understood by all who are participating at the event.

Anti-doping Policy

The Lake Sonoma 50 & 26.2 has a zero-tolerance policy regarding the use of performance enhancing drugs (PEDs). Any athlete who has been determined to have violated anti-doping rules or policies, whether enforced by the IAAF, the World Anti-Doping Agency (WADA), U.S. Anti-Doping Agency (USADA), or any other national sports federation is ineligible for entry into the Lake Sonoma 50 or 26.2.

The Lake Sonoma 50 & 26.2 reserves the right to conduct pre- and post-competition testing for any and all performance-enhancing drugs (PEDs) listed on the current WADA Prohibited List. Any athlete who refuses to submit to anti-doping controls, if selected for testing, shall be disqualified and subject to a lifetime ban from the Lake Sonoma 50 & 26.2.

Transgender and Non-binary Entrant Policy

We are utilizing the policy Western States Endurance Run has created, with a few minor edits to fit our event. *Kudos to WSER for taking the helm and bringing awareness and progression.

A male-to-female transgender entrant can register to compete as a female provided the runner has been undergoing continuous, medically supervised hormone treatment for gender transition for at least one year prior to the race. 

A female-to-male transgender entrant can register to compete as a male provided the runner has been undergoing continuous, medically supervised hormone treatment for gender transition for at least one year prior to the race.

For transgender entrants who have not been undergoing continuous, medically supervised hormone treatment for gender transition for at least one year prior to the race, please register with the gender that was provided at birth. (For the sole purpose of awards and results.)

Non-binary and non-conforming entrants are recognized as such, but we ask for them to include their birth gender during registration for the purpose of awards and results.

Results Challenges

Result challenges may only be made if the participant in question has placed in the top five or is an age group winner. Challenges are only to be shared with the race director, who will privately speak to the participant in question and also a medical official if necessary. The race director will keep all information and conversation confidential, and will handle accordingly with the utmost discretion based on the situation or question at hand. *Any hateful or discriminatory behavior will not be tolerated.

Cancellation & Deferral Policies

Cancellations by the Entrant

The entrant must notify the race director of their intent to cancel on or by January 31st, and will be refunded 50% of their entry fee. No refunds will be given for cancellations after January 31st.

Entrants whose entry is based on a deferral from the previous year are not eligible for a refund or any further deferrals.


A one-time deferral is allowed as long as the entrant notifies us of their intent to defer by February 28th. The entrant will be entered into the next year’s race. Should the entrant not participate in the next year’s race, their entry is forfeited.

Pregnancy Deferral

If a woman entrant becomes pregnant after registering for the race, we are happy to allow her to defer her entry to either of the next 2 years of the race. This is the only exception to the above deferral policy.

Race Cancellation

If the race cannot be held on the planned date due to conditions out of the race director’s control, the event will be rescheduled at the race director’s discretion. All race entrants will be deferred to the new race date. There will be no refunds given.

Pandemic Issues

Entrants (and any crew, friends, or family) are expected to follow any and all local guidelines related to the ongoing pandemic while at the event. Any entrant not following those guidelines will be asked to leave the event (the same goes for any crew, friends, or family).

Entrants who are traveling to the event should consider the impacts of the pandemic prior to registration. The policies listed above will not be modified for travel restrictions, or other issues out of our control. Please do not ask for a refund or deferral outside of the timelines above should your ability to travel to the race be impacted. Travel insurance is recommended if you have concerns.