Green Border Gravel is a self-supported 300 km gravel adventure through the remote southern borderlands of Slovenia, following the natural flow of forests, ridgelines, and quiet border roads along the Slovenian-Croatian frontier. With 7,000 metres of elevation gain and 70% unpaved terrain, it is a true wilderness challenge for experienced gravel riders. Limited to just 150 riders, the event offers a personal and intimate experience with GPX tracking, a rider pack, and a warm meal at the finish. No outside assistance allowed — just you, your bike, and your decisions.