Train Smarter.
Race Better.
Data-driven tools to dial in your nutrition, pacing, and race day strategy.
Even Splits Lab is where endurance training meets real numbers. Our articles break down how to train, fuel, and race smarter, with simple calculators to dial in your pacing, nutrition, sweat rate, and heart rate zones. Built for runners, cyclists, and triathletes who want data they can actually use.
The Lab Tools
Fuel Strategy
Running a half marathon? Most athletes need 60–90g of carbs per hour. Find your exact number in 2 minutes.
Plan Fuel
Sweat Rate
Lose more than 1L of fluid per hour without knowing it? Most athletes do. Find your hourly sweat rate in 2 minutes.
Run Test
Pacing Strategy
Want to run a sub-2:00 half? You need to hold 5:41/km. Enter your goal time and find the pace you actually need to hit.
Find Your Pace
HR Zone Finder
Training in Zone 2 but actually running in Zone 3? It happens more than you’d think. Get your personal zones in 2 minutes.
Find Your ZonesLatest From the Lab
T100 vs 70.3: Which One Is Actually Worth It?
If you’ve done a 70.3 and you’re eyeing a T100 race, you’ve probably noticed the marketing. Pro athletes, big prize money, a course you supposedly get to share with the best in the world. It sounds like the next level up. I went straight to Lucas, a training partner of mine who’s raced two Ironman […]
What Is Kona? The Ironman World Championship, Explained
If you have spent any time around triathlon, you have heard someone say “Kona” in a slightly lowered voice, like they are talking about a place that might not actually exist. It is the race people build a decade of training around. It is also one of the most misunderstood events in the sport, partly […]
How to Keep Your Fitness While Injured
You felt the twinge, ignored it for a week, and now you cannot run without limping. The first thing most of us panic about is not the injury itself. It is the fitness we imagine draining away by the hour. Here is the reassuring part: you lose it slower than you fear, and most of […]