I'm in the process of publishing a book for 50+ year old runners with Human Kinetics Publishers. I want to share part of my acknowledgements because they include Marc, and many here may never pick up this book: 

"Finally, I want to thank, and remember, my dear friend and

chiropractor—and the person who was always there when I needed

to be fixed—over the past 17 years, Marc Cahn. Marc died in a tragic

accident in Hawaii in March 2024. He was a serious cyclist and

Deadhead, but he is also the only reason that I am still running today

after being told in 2008 that my running days were over. We all need

a team behind us—whether you are an elite runner or you are the last

runner crossing the finish or you just want to enjoy your constitutional

trot each day, you need others to guide and help you. Marc was my

go-to when any little body issue showed up. I miss him immensely

every day. And I was blessed to have found him when I did. Thank

you, Marc."

I first met Marc in the early-md 90s as a chiropractic peer. He had a good reputation in Boulder and I was fairly new out of school.  I was intimidated and quite around him. 

Then I saw him at a show at Red Rocks. Don’t remember the year or who we were there to see but as music will do realized we were kindred spirits. 

As our friendship matured we talked more about music and who we were seeing than about chiropractic. 

Marc, your smile and kind soul will be missed. 

Condolences to your wife and children. ❤️