- Zydeco Marathon & 1/2 is a full and half marathon running event held in Lafayette, Louisiana. Lafayette has is world reknown for our rich heritage, awesome cajun food, and, of course, Zydeco music. Zydeco Marathon combines a fun, safe, and memorable run with our Finish Line Festival, bringing all that Lafayette is know for straight to you after your run. Zydeco Marathon & 1/2 is a USATF sanctioned event on a certified course. We are a Boston Qualifier.