Most Ultraman triathlons completed by a married couple
Who
Katherine Calder-Becker, Kevin Becker
Where
United States (Kailua-Kona)
When

The most Ultraman triathlons completed by a married couple is 5, and was achieved by Katherine Calder-Becker and Kevin Becker (both Canada) as verified on 29 November 2015.

Katherine and Kevin completed the Ultraman Canada in Penticton BC in 2011 and 2012, and the Ultraman World Championship in Kona Hawaii in 2012, 2014, and 2015 to achieve this record title.