The Drop Glasgow begins with runners surrendering phones, watches, and maps before being blindfolded and boarded onto a bus. They are then transported to an undisclosed location outside Glasgow and must navigate back to Ocho at Speir's Wharf on foot, with choices of 6, 10, or 15 miles. These distances are measured as the crow flies, meaning the actual mileage depends on each runner's route selection and ability to read the terrain.
No course markers, maps, or pre-set routes are provided. This event combines trail running with urban navigation across the West of Scotland surrounding Glasgow, with each participant devising their own unique path. Some runners might opt for roads, paths, or prominent landmarks, while others might navigate towards higher ground. Wrong turns can add significant mileage. While past results are recorded, the event's nature emphasizes decision-making under pressure over adherence to a predetermined course.