It is held each year on Friday, Saturday and Sunday, the second weekend in June.
Saint Francis Tulsa Tough attracts professional and amateur racers from across the country racing criterium style races on three different venues in the streets of Downtown Tulsa and along the Arkansas River.
All routes feature aid stations and rolling support for riders of all sizes and abilities.
Guidance for the event comes from an executive committee made up of several Tulsa-area cyclists and business people.
There, Tulsans line the hill to cheer them on, chug beers and parade around in costumes.