Semillero Sólidos is a skating session open to all skill levels focused on improving skating technique and physical conditioning, including cardio and strength exercises. Sessions take place every Tuesday at Plazoleta del Concejo de Bogotá in two groups from 6:00 to 7:30 pm and 7:45 to 9:30 pm, with voluntary contributions and free entry. A special edition includes a photo session led by a roller photographer at the same location.