Mountain Quest is an endurance mountain biking event based in Amarante, Portugal, established in 2011. Built around the spirit of adventure and self-reliance, it challenges riders with demanding routes through mountainous terrain. The featured edition is scheduled for June 2027, with a course of approximately 208 kilometres and 6,879 metres of elevation gain, alongside a 19-hour time limit. The event emphasizes preparation, mutual support, environmental responsibility and finishing safely.

Mountain Quest provides a broad set of resources for participants, including course tracks and elevation profiles, sector-specific weather forecasts, race logistics, event schedules, regulations and detailed pre-race briefings. Its app offers agenda information, tracking, routes and offline access. Riders can follow the race through live GPS tracking and revisit event coverage through replay and media features. The wider Mountain Quest platform also includes performance tools such as the MQ BIOS simulator, cycling games, podcasts, literary content and a hall of fame.