https://sparkapi.com/Reso/OData/Property?$filter=geo.distance(Location, geography'POINT(-111.700401 33.215137)') le 10&$top=10
A geographic search from a point in the Data System. Note that the structure of a geospatial search can vary per MLS.Search. Pay attention to MLS Service metadata name for Type=”Edm.GeographyPoint”.