The third Sustainable Regency Festival was held in Sintang Regency, West Kalimantan, on November 2–4, 2020, with the theme “Open Your Hearts to a Sustainable Economy.” The festival took a hybrid format, an innovation during the COVID-19 pandemic. Pre-festival programs were developed, including inviting culinary partners to explore local cuisine in Sintang through a Sustainable Culinary Journey. During the festival, a Sintang jurisdiction profile was launched, summarizing Sintang’s progress toward collaborative sustainable development. The festival featured a series of webinars and an interactive virtual tour. Singer Andien Aisyah enlivened the festival by singing her songs while dressed in Sintang woven cloth using natural dyes.