Substack: Top 20 Rules for Faster Triathlon Swimming Top 20 Rules for Faster Triathlon Swimming by Joel FilliolDo the rules still hold up 14 years on?Read on Substack Newer:Substack: Relentlessly Obsessed: What I learned from Simon WhitfieldOlder:Substack: Risk and Reward PostedMarch 5, 2026 AuthorJoel Filliol