Show HN: I mapped every US golf course – 16k+ courses, free, no signup

A solo golfer just dropped a free, no-signup map of more than 16,000 golf courses across the United States, complete with filters for holes, access, course type, and amenities. In normal internet fashion, the community spent about two seconds saying “cool” before turning the whole thing into a live group chat of feature requests, missing-course panic, and light chaos.

The strongest mood was a mix of admiration and “okay, but what about my edge case?” One commenter immediately flagged a possibly missing New York course, only to admit it may not even still exist after a county purchase. Another wasted no time escalating the dream project with a dead-serious demand: “Now add mini golf courses.” That energy basically set the tone — people loved the map, but they also treated it like the opening move in a much bigger obsession.

Then came the mini-drama. One user clicked a course website and said it led to a weird site called “wopraja,” which is exactly the kind of random internet gremlin that makes a wholesome golf map thread suddenly feel spicy. Others pushed the project in wildly different directions: one wanted a global version, another asked if the data could be used to estimate water usage and environmental impact, and another suggested rebranding it as an “open golf map,” comparing it to ski-tracking sites like OpenSkiMap and OpenSkiStats. In other words: the map is real, but the comments are already trying to turn it into a movement, a climate debate, and a mini-golf empire all at once.