TRAINING LOAD RATIO
Build fitness without breaking down
July 14th 2026・by Andrej Mihelič
GENTLER 101
FITNESS
TRAINING
Every training block sits somewhere on a line between building fitness, maintaining it, and breaking down. Training Load Ratio (TLR) is the number that tells you where on that line you sit.
TLR compares how hard you have trained recently against what your body is currently conditioned to handle. It is not a measure of fitness itself, but of the relationship between your short-term effort and your long-term base. Push above it and you are building on it, but push too far above what you are used to and you risk overtraining and injury. Drop below it and you are easing off, or losing fitness. But it is not just a question of building fitness or losing it. Sit in the middle and you are maintaining your base.
How TLR Is Calculated
TLR compares two numbers. Acute training load is a weighted average of your training over the past 7 days. It reflects what you have been asking of your body right now.
Chronic training load is a weighted average over the past 42 days. It reflects the fitness base you have actually built.
Divide acute by chronic and you get the ratio. A value near 1.0 means recent training matches your established base. Above 1.0, you are pushing beyond it. Below 1.0, you are training under it.ut yourself.
f(x)
This acute-to-chronic approach comes from workload ratio research in sports science, where it is used to flag when an athlete's training load is rising into higher-risk territory. Gentler Streak and The Outsiders calculate it automatically from your training history, so you always know where you stand without working it out yourself.
The Outsiders app shows Training Load Ratio directly, with the numbers and data behind it. Everything you need to find your training sweet spot.
The Healthy Range
A TLR between 0.8 and 1.3 is where sustainable progress happens.
Below 0.8, training is likely too light to drive meaningful adaptation. That's not always a bad thing. It's also the range you want for recovery, letting your body absorb previous training and get ready for the next training cycle or a race. The concern is a low TLR that isn't intentional. Fitness is not a fixed asset, and without enough ongoing stimulus, deconditioning sets in quietly, well before it shows up in a race result.
Above 1.3, acute training load has climbed well above chronic training load, and the risk of overreaching or injury rises, particularly if it holds across several consecutive days. That can be deliberate: a training camp, a build phase, a race-specific block designed to push adaptation. Or it can be a sign that training load has crept up faster than your base can support, without anyone deciding that on purpose.
Neither edge is inherently wrong. What matters is whether you're there on purpose, and for how long. In both directions, TLR turns a vague feeling ("I think I'm overdoing it" or "I think I've gone soft") into a number you can actually track.
In Gentler Streak app, Training Load Ratio is represented through the Activity Path. Follow the path and build a sustainable, healthy lifestyle.
Reading the Trend
TLR is built to be read as a trend, not a single data point, so how long you sit at either edge matters as much as the number itself.
A single day above 1.3 is not a problem, a week spent there without recovery is. The same logic applies at the low end: one easy day is rest, a month of easy days without a plan is drift.
Pair it with your body metrics. TLR shows you the training load side of the equation. Body metrics show you how your body is actually responding to that training load. Together, they tell you whether the balance you're striking is one your body can sustain, or one it's quietly struggling with.
How I Use it
I'm more or less always in one of two modes: building fitness or active recovery. My training cycles usually last three to four weeks. During them, my TLR never drops below the Optimal range, though it can come close to 0.80, especially the day before a harder session. I go above 1.3 about twice a week, but never on two consecutive days.
When I'm in active recovery, I don't pay attention to TLR at all. It falls below 0.80, which is a good thing, since it means I'm getting properly rested for the next training cycle and the harder workouts ahead.
Andrej Mihelič, co-founder at Gentler Stories LLC
Frequently Asked Questions
What is Training Load Ratio?
TLR compares your acute training load, a weighted average of the past 7 days, with your chronic training load, a weighted average of the past 42 days. It shows whether you are building fitness, maintaining it, or breaking down.
How is Training Load Ratio calculated?
TLR is your acute training load divided by your chronic training load. A result near 1.0 means recent training matches your established base, above 1.0 means you are pushing beyond it, and below 1.0 means you are training under it.
What is a good Training Load Ratio?
A TLR between 0.8 and 1.3 is generally considered sustainable, meaning your recent training matches what your body is conditioned to handle.
What does a high Training Load Ratio mean?
A TLR above 1.3 means your acute training load has climbed well above your chronic training load. This can be a deliberate training block or a sign that load has crept up too fast, raising the risk of overreaching or injury, particularly if it holds for several consecutive days.
What does a low Training Load Ratio mean?
A TLR below 0.8 means recent training has been lighter than your fitness base is used to. This is healthy and expected during a recovery week or before a race. It only becomes a concern when it stays low without intention, since that can lead to deconditioning over time.
