What is SwimRun? We explain the basics of this endurance event Swim running, or SwimRun, has become an increasingly popular pursuit in recent years. But what is it? Advnture NewsletterAll the latest inspiration, tips and guides to help you plan your next Advnture!Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors MOST READ1I'm an adventure journalist, and these are the running shoes I recommend if you're heading off-road2Details of Garmin's next watch have leaked – and I'm excited3Garmin announces huge update for your watch – including skin temperature tracking4Can you rely on a cheap headlamp for running?5Why is outdoor gear so expensive?