Colby Dimsdale

Colby Dimsdale, a 21-year-old channel swimmer and pre-med student from Honolulu, Hawaii

Colby Dimsdale swimming with Matthew McGillicuddy across the Molokai Channel in April 2024 on a tandem swim

Colby Dimsdale is a 21-year-old American competitive swimmer and open water swimmer living in Honolulu, Hawaii and originally from Troy, Michigan.

Open Water Swimming Highlights

He won the 39th Possibly Annual Looong Distance Roughwater Swim held across Waikiki Bay on Oahu on 28 October 2023.
He crossed the 45 km Molokai Channel from Molokai Island to Oahu in 13 hours 34 minutes on 13 April 2024.
In 2023, he crossed the 17-mile Kaulakahi Channel from Ni'ihau to Kaua'i in Hawaii together with Matthew McGillicuddy and Joseph Guilfoyle.
He completed the Ironman Des Moines in 2022 in 13 hours 24 minutes 49 seconds.
He competed in the 52nd Annual Waikiki Roughwater Swim on 4 September 2023, finishing in 51:20.
In September 2023, he completed a crossing from Maui to Lanai and a crossing from Molokai to Lanai as part of the Maui Nui Crossings.
In 2023, he swim between the islands of Maui, Molokini, and Maui in Hawaii.