The Katy Trail 

Start: Clifton, MO
Finish: Machens, MO
GPX:  https://www.strava.com/routes/2875758149915644132
Distance: 237 miles
Climb: 1630 ft

FKT: 

Men: Benji Bockting 13H 10M 34Sec https://www.strava.com/activities/6035725606
Women: Kendall Park 18H 16M 12Sec https://www.strava.com/activities/6154522288
Unsupported: Roger Orth 14H 55M 01Sec https://www.strava.com/activities/7105706933

Team: Brad Flachsbart, Tom Keller, Aaron Fader, and Greg Springborn 12H 17M 26Sec https://www.strava.com/activities/4079989148


There is also an elite club for sub 24hrs 
https://bikekatytrail.com/one-day.aspx​