Triathlon 93 articles
IRONMAN 70.3 Elsinore 2026: Van Riel Six for Six
Marten Van Riel took his sixth 70.3 win of the season with a course record, while Kat Matthews erased a three-minute deficit on the run.
How Much You Actually Sweat: Stop Guessing, Test It
Sweat rate varies several times over between athletes. Measure your own with a scale and one session, then set your bottle plan.
Strength Training for Triathletes: The Real Payoff
Heavy strength work will not bulk triathletes up. Research shows it builds running and cycling economy, with two sessions a week enough to see the effect.
Ronnestad 30/15 Microintervals for More VO2max
Rennestad’s 30/15 microintervals pack more time above 90% VO2max into an hour than classic 4×5-minute reps, with the full protocol laid out step by step.
CORE 2: Turning Body Heat Into a Training Tool
CORE 2 estimates core body temperature from skin heat flow, helping triathletes pace safely in the heat and turn acclimation into structured training.
Carbs Per Hour on the Bike: 90, 120 or More
Most amateurs who fade on the run simply ate too little on the bike. The numbers, the gut science, and how to train your carb tolerance.
The Long Run in IRONMAN Training: Why 3 Hours Is the Limit
The long run is the backbone of IRONMAN marathon prep, but most amateurs get it wrong. How long, how often, and why 3 hours is the ceiling.
Kona 2026: IRONMAN Rebuilds Its Qualification System
IRONMAN rolled back its new Kona qualification system after most performance-pool slots went to men. What changed for age-groupers in 2026.
Suunto Race 2 Gets Auto Transitions, With a Catch
A January software update gives the Suunto Race 2 automatic triathlon transitions, heart rate broadcast and swim drills, but a bug corrupts split data.
IRONMAN Frankfurt 2026: Norway Targets the Euro Crown
Casper Stornes and Gustav Iden take on IRONMAN Frankfurt while Kristian Blummenfelt heads to Roth, with Magnus Ditlev returning from illness.
FLOWBIO: A Sweat Sensor That Measures Sodium Live
A needle-free chest sensor tracks fluid and sodium loss in real time, validated in a peer-reviewed study. What it measures, and what it costs.
Negative Split: Why the Second Half Should Be Faster
Positive splits are how age groupers waste a good bike leg. The physiology behind negative splits, the T2 pacing trap, and three sessions that build the habit.