Inside Zone3

Inside Zone3 explores the world around swim, triathlon and open water — from the athletes and environments that inspire us, to the thinking behind the products we create. Considered, practical and shaped by experience, it’s a space for stories that reflect how we approach performance, progression and life in the water.

Beginner Triathlon

August 26, 2026

Beginner Triathlon Kit List: What You Need for Your First Race

Zone3's beginner triathlon kit list covers the swim, bike, run and transition, so you know exactly what to pack and wear for your first race.

a triathlon transition showing all bikes racked on racks and lots of kit each side, all on a red carpet

beginners triathlon

July 27, 2026

How To Manage Triathlon Transitions T1 & T2 For Faster Race Times

What T1 and T2 are, how to set up your triathlon transition area, the kit that makes both faster & the mistakes to avoid. From wetsuit removal to aero race...

a man is swimming in the pool wearing buoyancy shorts the photo is taken from under the water with the person swimming above

beginner triathlon

July 23, 2026

Improve Your Triathlon Swim Technique Using Buoyancy Shorts

Buoyancy shorts lift your hips and legs into a flatter swim position, training your wetsuit feel in the pool. From Zone3, inventors of the category since 2007.

Close-up of a triathlete holding race number 79 against their kit.

Triathlon

June 15, 2026

Half Ironman (70.3) Training Plan: How to prepare for a middle distance triathlon

A middle-distance triathlon, also called a 70.3 or half Ironman, covers a 1.9km swim, a 90km bike and a 21.1km run. It sits between the Olympic distance and the full...

casper stornes sitting on the side of a swimming pool wearing jammers, adjusting swim cap

Athletes Beginners GoingForGold Triathlon

May 19, 2026

Top Triathlon Swim Tips and Drills

Top triathlon swim tips and drills to incorporate into your trainiing Below you will find the part of the swim technique to focus on, why it is important and which...

a man is swimming in a open air pool with hand paddles for training

athletes triathlon

May 19, 2026

Building Endurance for a Triathlon Swim

A strong swim makes you more competitive in the water and saves you energy for your bike and run so building your swim endurance should not be overlooked.

a man is swimming in a zone3 wetsuit, doing front crawl, the photo is taken from beneath the water

Athletes Triathlon

March 23, 2026

The Science of Speed: Hydrodynamics, Energy Efficiency, and Triathlon Wetsuits

Triathlon swimming is often the most technically demanding parts of race day. Open water conditions, race nerves, and the need to conserve energy for the bike and run make the...

a man and a woman are facing the camera, both stood next to the start line the swim start of a triathlon wearing their wetsuits and brigh colpured swim caps

beginners triathlon

August 27, 2025

Strength Training for Triathletes and Swimmers - Build Power and Prevent Injuries

Discover how strength training for triathletes boosts performance, prevents injury and improves swim, bike, and run efficiency with simple, proven exercises.

a group of people are swimming in the open water event, with a buoy in the water to turn around

beginners openwaterswim triathlon

August 8, 2025

How to Train for Triathlon Open Water Swims in UK Lakes and Seas

Triathlon and Open water swimming are having a big moment in UK. With huge events like Ironman Leeds, the London T100, the Great North Swim and Swim Serpentine drawing record...