The start and finish are located on Trobika Street, directly in front of Mungia Town Hall. San Antontxuko Herri Krosa is a local running event held in January under the San Antontxu name, featuring both a 5K and a 10K race. The 5K is a single-lap course, offering a brief, quick option rather than an extended test of endurance.
Recent 5K fields have expanded from under 200 finishers to almost 300, with the most recent result showing 294 runners: 163 women and 131 men. Patrik Saitua won the 5K in 16:42, matching the finish time of the 10K winner, Julen Azpiazu. Local middle-distance runner Uxue Mardaras placed second overall and first among women in 17:00, followed by Jon Goiriena in 17:03 and veteran Imanol Egia in fourth at 17:16. Maitane Jaio was the second woman finisher in 19:46.