How can I track my distance?

If you're swimming in a pool, this is much easier! A length in your local swimming pool is probably 25 metres (or 50m if you’re lucky and have an Olympic pool near you!). That means you need to do 76 lengths between October - December (around 25 lengths/month). Alternatively, you can either use a waterproof fitness tracker (such as Fitbit or Strava).