Translations:Master Guide/Prerequisites/6/en
From Pathfinder Wiki
3. Be at least 16 years of age to start the Master Guide Leadership course and at least 18 years of age at completion.
This requirement means that an individual must be at least 16 years old to begin working on the Master Guide requirements, and cannot be invested as a Master Guide until age 18. In order to get the most benefit from the program, it is recommended that the candidate spend at least a year (and two years is even better) working towards the goal of becoming a Master Guide.