Amid a snowy winter, outdoor enthusiasts are utilizing tools like Strava, OpenSkiMap, and Traveler Today, which rely on trail data from OpenStreetMap (OSM), a free, community-built map integrated into various mapping platforms including Mapbox. The text explains how developers can create custom ski trail maps using OpenStreetMap data extracts with tools like Overpass Turbo and Mapbox Tiling Service (MTS). It highlights projects such as OpenSkiMap.org and Snow Social, which use OSM data to provide interactive mapping solutions for skiers. The process involves querying OSM data for ski trails, exporting it as GeoJSON, and transforming it into tilesets using MTS, which offers efficient data preprocessing and customization options such as setting zoom extents and filtering attributes. By using a recipe file, developers can optimize large-scale data, ensuring maps are both detailed and efficient. Once transformed, the tileset can be published and integrated into mapping applications, allowing for the creation of customized, interactive maps for various outdoor activities.