This is a time based plan designed for intermediate-advanced runners looking to complete a half marathon. It is a structured plan with built in recovery weeks. It has suggested strength training days and 3 rest days each week. It begins with moderate length runs and progresses to 2 hour runs at maximum. Various runs are included in the plan to help you progress safely and quickly to achieve your goal. It begins with training your VO2 max and progresses to race pace intensity in the second half of the training plan. There are also notes included throughout the week to give you recommendations for practicing fueling and hydrating properly. There is a threshold pace test included at the beginning and halfway through the training plan. Your threshold pace can be updated in training peaks which would change the paces for your training as the workouts are set up based on a percentage of your threshold pace. If you don't want to do the threshold test, I would recommend estimating your threshold pace by estimating what pace you could sustain for a 30-minute solo run at your hardest effort, or what you could do in a 60-minute race. This should be current though. Not what you have done in the past.