Annual Dipsea Hike

Registration open for Dipsea Hike 2021

2021 Dipsea Hike

Physical activity is a very important component of overall wellness and studies have shown that it plays a significant role in breast cancer risk reduction, recovery after a breast cancer diagnosis and breast cancer recurrence prevention. 

The 19th Annual Dipsea Hike for Zero Breast Cancer will celebrate our organization's 25th year! An in-person event will be held at Old Mill Park in Mill Valley, CA on September 25, 2021. The virtual event will take place between September 18 and October 9. We hope you will join us. Register and donate here

Sign up for our email list for updates. If you have any questions, please reach out to us at This email address is being protected from spambots. You need JavaScript enabled to view it.

COVID-19 Safety

We are committed to making Dipsea 2021 safe for all of us! It is a fully outdoor event and will have fewer attendees than in previous years. Staff and volunteers will wear masks while helping people register, check-in after the hike, serving food, etc. Before the event, check out the Marin County recommendations for staying safe. We ask that you:

  • Not attend the hike if you are showing any symptoms of COVID-19.
  • Bring your masks! Please wear a face mask while in the park if you are closer than 6 feet to others outside your household.
  • Please use the hand sanitizer we will have available in the park and at the aid station
  • Follow directions for staggered start times.
  • Each team can decide whether to wear masks during the hike. Please wear masks if anyone in your group feels more comfortable wearing one.
  • Allow as much space as possible when passing or being passed on the trail.

Dipsea Hike Sponsorship

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Check out our Dipsea Sponsorship Opportunities!

T-shirt Design Contest

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Submit a design for the 2021 Dipsea Hike for Zero Breast Cancer contest! Download the t-shirt design brief and email This email address is being protected from spambots. You need JavaScript enabled to view it. for more information. 

 

2020 Virtual Event Video

2019 Hike

You can view pictures of the event at zbclink.org/2019dipsea

Dipsea Hike for Zero Breast Cancer - Your Questions Answered! 

Breast Cancer Action encourages people to consider four questions when contemplating participating in or supporting breast cancer walks. Here are our answers for the Dipsea Hike:

Q: How much of the money raised from the walk will go to breast cancer programs?

A: All of it!  Cash and in-kind sponsorship and wonderful volunteers make this a low cost event to produce. All the donations from hikers and all the fundraising efforts by teams support ZBC programs.

Q: What breast cancer programs or research will the walk fund?

A: The cancer programs supported by the fundraising proceeds from the hike are the development and dissemination of ZBC's unique and innovative breast cancer risk reduction health education materials for youth and teens to any one who wants them for FREE!

Q: Do the walk’s sponsors increase women’s risk of breast cancer?

A: ZBC is very selective about who is solicited for support.  Food items must all be minimally processed, plant based and as far as possible organic.  Swag bag items must not include fragrances or ingredients known to be hormone disrupting or carcinogenic. Cash sponsors have been politely turned away if we have reason to believe that their business are not aligned with our health and wellness risk reduction messages.  

Q: Does the walk present a one-sided picture of breast cancer that leaves some women out?  

A: Participants range from 7 years of age to 70 years of age. People from all walks of life participate and volunteer.  Men and women participate.  Breast cancer survivors and their families, neighbors and friends. Every hike begins with a speaker and these have varied over the years to include fitness advocates, screening and breast-self exam advocates and survivor advocates. After every hike feedback is solicited and sometimes that feedback does suggest improvements that can be made.  We take that feedback very seriously indeed.  

But don't just take our word for it.  If you have participated as a runner, hiker, volunteer, donor or sponsor to the Dipsea Hike for Zero Breast cancer anytime in the past 16 years and you want to suggest ways to continue to improve the value of the hike to all concerned please don't hesitate to contact us!

Background and History

Originally founded in 2002 as the Dipsea Hike/Run this event is now known as the Dipsea Hike for Zero Breast Cancer. This family friendly fundraiser supports Zero Breast Cancer's outreach and education efforts aimed at preventing breast cancer in the next generation. This signature event:

  • Provides an opportunity to participate in a fun filled and spirited day – starting and ending in Old Mill Park, Mill Valley.
  • Encourages participants to experience a 6-mile trail loop on Mt. Tamalpais - starting and ending with the famous Dipsea steps
  • Creates sponsorship opportunities for local and national businesses
  • Provides easy to use online team and individual fundraising tools
  • Has many, varied, volunteer opportunities for community members
  • Remembers Andrea Fox, a breast cancer activist and ZBC board member, who lost her life to breast cancer at 35 years of age
  • Remembers Jerry Leith, passionate runner and dedicated supporter of Zero Breast Cancer, who lost his life to cancer in 2011
  • Remembers Marjorie Bonner, mother of Annie Fox, who left a generous bequest to Zero Breast Cancer that we learned about in 2017 and announced at the 2018 Dipsea Hike

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