Traverse City-based Endurance Evolution is merging with events and timing services group Race Day Events of Fitchburg, Wisconsin.

Race Day Events will take over management and production of Endurance Evolution races and operations with guidance from Endurance Evolution owner Joel Gaff Jr. and his Traverse City team. “The team in Traverse City will continue leading the local operations, with the added support of the rest of the Race Day Events team,” said Race Day Events President Ryan Griessmeyer.

Gaff said he's “more confident than ever in the long-term success that these events will have, as well as being able to continue to provide first-class timing services to our clients in northwest lower Michigan and beyond.” Events include the Sleeping Bear Marathon, Half Marathon, & 5K; Traverse City Triathlon; Traverse City Trail Running Festival; Glen Arbor Solstice Half Marathon & 5K; a handful of virtual events; andd timing services operations for a slate of races around northwest lower Michigan.