The unlocking of routes in Zwift is based on a systematic approach that evaluates your progress and accomplishments. Zwift doesn't disclose specifics, but it's widely understood that the process involves several factors, including total number of miles ridden, structured workouts completed, and badges earned.
It's essential to understand that reaching certain levels or milestones won't automatically unlock specific routes, as Zwift follows a more intricate methodology. Attaining higher levels and badges will, however, increase your chances of unlocking new routes, as they demonstrate your overall cycling skills and dedication.
While you can't explicitly control the number or order of routes unlocked, you can strategically approach your training to maximize your likelihood of progressing through Zwift's route selection. Focus on increasing your power output and endurance in the 1-3-minute range, as this will directly support your racing goals while simultaneously working towards unlocking new routes.
Remember, the Zwift system is designed to encourage consistent engagement and performance improvement. By focusing on the key factors that Zwift uses to unlock routes, you will not only progress in the virtual world but simultaneously improve as a cyclist in the real world.