This year's St. Louis Hot Rod Hundred is scheduled for 10 October 2020. In consideration of ongoing COVID, the Light for the Lost will not be serving lunch; instead participants are to bring their own lunch etc. The start and end points are supposed to be the same as last year (Francis Howell High School and Washington City Park, respectively), but the route has yet to be determined.
Here's a link to the online registration form:2020 St. Louis Hot Rod Hundred online registration
Here's a link to the Hot Rod Hundred homepage:Hot Rod Hundred
Their slogan is, "Go a hundred, or go home!" It ends up being a 300-mile day for me!