Health No Link Found: Marathons, Ultramarathons Unrelated to Colon Cancer in 2026 Data by Health Editor — Dr. Nadia Rowe May 21, 2026 by Health Editor — Dr. Nadia Rowe May 21, 2026 No current evidence links marathons or ultramarathons to colon cancer, according to 2026 cancer statistics and advocacy reports. The … 0 FacebookTwitterPinterestEmail