ElasticSearchGeolocation. In this .Net Core 2.2 Console Application, we created a new ElastichSearch Index, for finding in 250 km distance Customers locations to our location with using ElasticSearch. And later we bulk inserted all document to ElastichSearch from Sql. And also the result didn't return to real distance. For this we used Haversine Formule. And finally we printed all filtered documents on to the screen.