Swimmer Completed Historic Catalina Channel Crossing
At age 70, Boston resident Maura Twomey finished the 20-mile swim to support kidney disease awareness.
Updated on Oct. 11, 2026 in Swimming
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On 17 August 2026, 70-year-old Maura Twomey completed the 20-mile Catalina Channel swim in 15 hours, 45 minutes, and 23 seconds. This feat made her the oldest person to finish the crossing and secured her the Triple Crown of Open Water Swimming.
Why it matters
The swim was undertaken to raise funds for the Irish Kidney Association following her brother's kidney transplant in June 2026. Her efforts highlight the endurance required after long-term medical treatments, such as the two and a half years her brother spent on dialysis.
Maura Twomey completed the 20-mile Catalina Channel on 17 August 2026 in 15 hours, 45 minutes, and 23 seconds, becoming the oldest person to do so. This success earned her the Triple Crown of Open Water Swimming, an honor previously supported by her completions of the English Channel in 2015 and the 20 Bridges Swim in 2023.
The players
Maura Twomey
A 70-year-old open-water swimmer from Boston who achieved the Triple Crown of Open Water Swimming.
Martin Twomey
A recipient of a kidney transplant in June 2026 who previously underwent two and a half years of dialysis treatment.
Irish Kidney Association
A non-profit organization providing support and advocacy for individuals living with kidney disease and organ failure.
The details
To navigate the 20-mile Catalina Channel, Twomey utilized a support vessel, the Kamryn Dawson, alongside a dedicated kayak crew. The crossing required managing sustained 12-knot to 20-knot winds and significant swells, which represent complex physical challenges for long-distance endurance swimming. Her training and effort were dedicated to the Irish Kidney Association, directly inspired by her brother Martin's successful kidney transplant at Beaumont Hospital.
Timeline
Maura Twomey swam the English Channel in 2015.
Maura Twomey completed the 20 Bridges Swim in 2023.
Martin Twomey received a kidney transplant in June 2026.
Maura Twomey completed the Catalina Channel swim on 17 August 2026.
The online fundraising campaign closed on 4 September 2026.
Health Landscape
Achieving the Triple Crown of Open Water Swimming requires successfully completing three of the most challenging channels in the world. This milestone demonstrates the evolving capacity for older adults to engage in extreme endurance activities when supported by appropriate medical care and consistent training.
For readers interested in high-intensity athletics later in life, it is essential to consult with a primary care physician about cardiac and musculoskeletal readiness. Monitoring your own physical activity levels while supporting community health initiatives can serve as a powerful motivator for long-term fitness goals.
The takeaway
Maintaining long-term athletic goals can be a meaningful way to advocate for medical causes and personal health milestones. If you are starting a new endurance routine, discuss a baseline cardiovascular evaluation with your doctor to ensure your goals align with your current physical capacity.
Further reading
For more information on the benefits of endurance sports and water-based fitness, visit our section on Swimming.
Source note: This article includes information reported by The Times of India.
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