Dierdre Wolownick is a mother and an author who proves that age is just a number.

Maybe you’ve seen her in the Oscar-winning documentary “Free Solo,” about her son, record-setting climber Alex Honnold.

Two years ago, Dierdre Wolownick became the oldest woman to summit Yosemite’s El Capitan at age 66. Beth Ruyak speaks with her about her new memoir “The Sharp End of Life: A Mother’s Story.”

You can hear Dierdre Wolownick at her upcoming events:

• May 2 at REI in Sacramento

• May 7 at Eskaton Munroe Lodge in Sacramento

• May 9 at Books Inc. in Berkeley

• May 16 at Face in a Book in El Dorado Hills

• May 17 at Avid Reader in Davis

• May 18 at Alpenglow Sports in Tahoe City