The calendars are updated once per day so you don't have to synchronize the calendars more often than that.

Badges Calender URL - https://garminbadges.com/calendar/badges
Challenges Calender URL - https://garminbadges.com/calendar/challenges
Note: If you browse to the URL an ics file (iCalender file) will be downloaded. Don't use that in your calendar application since it will not be updated.

How to use

1. Copy the URL for the calendar you like to use.
2. Add the calendar URL to your calendar application.
1. For example Google Calendar: https://calendar.google.com/
2. Click the plus sign next to "Other calendars"
3. Select "From URL"
4. Paste the copied URL into the input field
5. Click button Add calendar

Advanced users

• The Calendars support parameters.
• userId - Only show the badges you still have left and challenges you joined and still need to do.
  Note that you must add your data to the site for it to work. Look here for how you do that.
  Select your username in the frontpage and look in the address bar to find your userId.
• maxduration - Only fetch challenges below or equal the max duration in days.
• The calendars are updated on-demand if any of these parameters are used.
• Badge Calendar Example:
• Only fetch badges for user with userId 286: https://garminbadges.com/calendar/badges?userId=286
• Challenge Calendar Examples:
• Only fetch challenges for user with userId 286: https://garminbadges.com/calendar/challenges?userId=286
• Only fetch challenges of max duration 10 days: https://garminbadges.com/calendar/challenges?maxduration=10
• Only fetch challenges for userId 286 and of max duration 5 days: https://garminbadges.com/calendar/challenges?userId=286&maxduration=5