Whether it's elevation gain, temperature, humidity, or altitude, race day conditions can be unique, challenging, and variable. Unlike other race calculators, Stryd's Race Calculator considers external conditions to provide the most accurate race predictions.

For the Stryd Event Planner to be accurate, the Stryd system needs 30-90 days' worth of Stryd data and an accurate Critical Power. Both of these parameters can be easily achieved by adding a Stryd Training Plan to your Stryd Calendar. The Marathon, Half Marathon, 10k, and 5k Stryd Training Plans will give you both 30-90 days' worth of data and an accurate Critical Power. If you use the Stryd Adaptive Training plan for 30-90 days, you will get an accurate Critical Power and Event Planner.

Stryd's Event Planner is intended to help you set an achievable target power or target time and to see what the possible outcome might be as your race day approaches. Many factors affect this calculation, and certain criteria must be met to have an accurate estimate.

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The Event Planner feature can be very helpful if you have any upcoming races or race-effort workouts.

The Stryd team has 12 popular verified race courses for a quick add. Or you can add a custom race distance.

The Event Priority will help you prioritize multiple races.

Other customizations, such as surface, Average Elevation, Temperature, and Humidity, will help the Stryd system further customize your race plan.

If you have a very specific finishing time or race power, you can Edit the Target, or you can use the recommended race power.

Stryd’s ‘Race Calculator’ uses your previous 90 days of running activity to recommend a ‘Target Power’ or ‘Target Time’ for both generic flat courses and real courses. Many factors go into Stryd’s calculation.

When creating a new event via Stryd's mobile app, you must assign a 'Priority' to the event: A, B, or C. This is a feature that is tied to Adaptive Training Plans and will help determine how an event is associated with an Adaptive Training plan.

Event 'A' is your primary event. This is the event you associate with a training cycle and usually comes at the end, after a good taper period to achieve your best results.

Event 'B' is a secondary events that help to gauge the effects of your training and your race readiness as your Event 'A' approaches.

Event 'C' is a fun run or rust buster. These events take less priority and are typically not done at maximum effort, and might be thrown in throughout your training cycle in place of a workout.

To properly train for your ‘Event A’, you will need 13-16 weeks of specific training. Any Stryd Training Plan that is 13-16 weeks long will be sufficient in preparing you for your ‘Event A’. Adaptive Training that is 13-16 weeks out from your ‘Event A’ will also be sufficient.

You can not have two ‘Event A’ races in close succession. If you have a series of races you are preparing for, you will need to determine which race is the ‘Event A’ race, and then the other races can be ‘Event B’ and ‘Event C’ races. ‘Event A’ races will need to be at least 13-16 weeks apart for the best results.

Adaptive Training for an ‘Event A’ race can support race-specific training up to 24 weeks out from your race! If you want to train farther than 24 weeks out, you still can, but the training will not be race-specific; it will be classified as a fitness and maintenance cycle. Once you are 24 weeks out from your race, the Adaptive Training system will automatically switch to race-specific training.

Adaptive Training will let you train for as little as 4 weeks before your race. It is not recommended that you only give yourself 4 weeks to prepare for a race like the Marathon, but you should be able to make these calls depending on your situation.

Adaptive Training will build a training plan around your Event A race. There can only be one Event A race associated with your Adaptive Training plan at one time.

The Adaptive Training Plan will use a scaled-up or scaled-down version of a build and taper. Longer plans will have testing weeks and recovery weeks, but more condensed plans will be very simple: build and taper.

Between every phase, you have the opportunity to adjust your weekly structure depending on your training needs.

‘Event B’ races will not be treated the same as Event A races by the Adaptive Training plan.

There will be no direct build or taper phase for Event B races. Leading up to an Event B race, the Adaptive Training Plan will schedule only easy running 2 days out from the race. After Event B, you will get one additional easy day before the Adaptive Training picks up right where you left off in your Event A training cycle.

If you have a non-running day that falls on one of these easy days, nothing will change, and you will keep the rest day. But any other run type will be changed to an easy run.

Events/races can only be deleted in the Stryd app on either iOS or Android with the following instructions.

Deleting an Event on iOS:

OR

Deleting an Event on Android: