Jarrett Tishmack is an American open water swimmer who completed the first crossing of the 15 km Statia Channel from St. Kitts to St. Eustatius in 4 hours 40 minutes on 1 November 2012. Statia Channel is located between Sint Eustatius, known as Statia and formerly as the Golden Rock, and St. Kitts in the Windward Islands of the north eastern Dutch Caribbean. He also completed the first crossing of the 15km Vieques Channel from Culebra to Vieques, Puerto Rico in 4 hours 33 minutes on 15 October 2013. Vieques Channel is located between Vieques and Culebra, sometimes referred to as the Spanish Virgin Islands, east of the main island of Puerto Rico.
Jarrett Tishmack is also a rock and ice climber. As a member of the American Alpine Club, he has traveled on numerous occasions abroad to complete technical ascents of remote mountains.
Tishmack works as an environmental compliance technician in the aerospace industry in Boulder, Colorado. As a graduate of Colorado State University Forestry program, he has continually complemented his devotion to the outdoors with his attention to environmental conservation. He has worked seasonally as a firefighter and field technician for the U.S. Forest service including authoring a research note on mountain pine beetle emergence patterns. Jarrett has continued his pursuits in the field by starting a sawmill for recycling otherwise unwanted urban trees.