Hi @andrew6 
Here is a similar example which displays Stores with a 50 mile radius of a dynamic address:
If you’d like to set this up with Users, you would change the repeating group to Do a Search For Users within X miles of an Address value. For example, the screenshot below would find all of the Users that are within 50 miles of the Current User’s location. Note: 50 miles is just for this example – you can replace 50 with a dynamic value from an input of type: number, or use a slider element’s value – either way works!
