<p>Mary Shertenlieb wanted to toe the line at the Boston Marathon in 2025, but her body was not on board; she was in the middle of treatment for her fourth cancer diagnosis. This year, however, she ran, completing her fifth Boston and her sixth marathon overall.  “I feel so lucky that I get to do this,” says Shertenlieb, age 50, who has raised $156,000 to date for Dana-Farber Cancer Institute. “I feel this tremendous gratitude at the start line for the generosity and understanding ... <a class="read-more" href="https://blog.dana-farber.org/insight/2026/04/four-time-cancer-survivor-boston-marathon-runner/" title="Four-Time…
Four-Time Cancer Survivor is Five-Time Boston Marathon Runner
Dana-Farber Cancer Institute | | Beth Dougherty
Topics: blood-cancer