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
Most athletes under-fuel without knowing it. Find out exactly what your body needs per hour.
Plan FuelSweat Rate
Calculate your hourly fluid target so you replace what you lose, before cramps tell you that you didn’t.
Run TestPacing Strategy
Your finish time is just math. Enter a target time to find your required pace, or enter your pace to see your projected finish.
Find Your PaceHR Zone Finder
Your zones are unique to you. Stop using generic charts and get numbers that actually match your fitness.
Find Your ZonesLatest From the Lab
Zone 2 vs Zone 3 Training: Which One Actually Builds Fitness?
Most recreational athletes train too hard. Not race-hard : just hard enough that their easy days aren’t really easy, and their hard days aren’t hard enough to matter. The result is a lot of middle-ground effort that doesn’t produce much of anything. Zone 2 and Zone 3 sit right at the centre of this problem. […]
The Best Budget Running Watches in 2026 (Tested and Ranked)
A good running watch doesn’t have to cost $600. The gap between budget and premium has closed a lot in the last few years. GPS accuracy, heart rate monitoring, structured workouts. You can get all of it without the price tag that makes you wince. If you’re trying to figure out which running watches on […]
Brick Workouts Explained: Why They Matter and How to Start
If you’ve registered for your first triathlon, you’ve probably heard someone mention brick workouts. Maybe at a club run, maybe in a Facebook group, maybe in a race forum where everyone seems to already know what everyone else is talking about. A brick workout is simply two disciplines done back to back in a single […]