There are a few ways you could keep track of your challenge:
Download an app like Strava to track your swims. You can either link this to a waterproof smartwatch if you have one, or manually add an activity every time you swim. If you use Strava, you can link this directly to your fundraising page, log your swim distance and keep your sponsors up to date with your progress.
If you don’t use Strava you can still log your distance using a manual feature on your fundraising page. As with Strava this helps to track your progress and keep your sponsors up to date with how you’re getting on!
Keep notes with a good old fashioned pen and paper! You can then update your fundraising page with comments letting your sponsors know where you’re at with your challenge.
However you track your swim challenge, make sure to share your progress with your friends and family!