Current fitness estimate
A marathon equivalent based on your recent marathon or half marathon, so the goal has a real starting point.
Marathon goal check
For runners checking the target before the hard weeks decide for them
Is your marathon goal realistic, or are you about to force the pace?
Use this when you are not sure whether the target fits. Enter the training you actually have and get the quick read before you change the plan. If you want the whole block managed week to week, apply for coaching after you see the result.
Recent race result to estimate current fitness
Mileage, frequency, and long-run support
Goal-pace feel and late-run fade risk
What it checks
The questions runners keep asking.
The same patterns show up again and again: a target picked from a calculator, marathon-pace workouts that feel like racing, a long run that turns ugly late, and no clear answer on whether the fix is more miles, slower easy days, better fueling, or a different goal.
If you found me from a reply about goal pace, easy days, or marathon realism, this is the free first step. It checks the target against the training you actually have.
01
Is this goal actually realistic?
Recent race results set the first estimate. The check starts with current fitness, not the time you want to run.
02
Why am I fading or bonking late?
Mileage, long-run support, and fueling practice show whether the back half of the race has enough preparation behind it.
03
Should marathon pace feel this hard?
Goal-pace feel, easy pace, and recovery point to whether the pace is too hot or the week is carrying too much fatigue.
04
What should I change first?
The output points to the first constraint instead of handing you another generic plan.
Output
A first read you can act on.
Not a race predictor dressed up as coaching. The check looks for the mismatch that matters most right now.
Goal gap
The difference between current fitness and goal pace, with context for whether that gap is reasonable.
Late-race risk
A read on whether fading, bonking, or workouts that feel like racing are pointing at the same problem.
First change
The most obvious constraint to address first: mileage, frequency, easy pace, long-run support, fueling, timeline, or base.
Example
A quick read, not a verdict.
The calculator cannot see the whole athlete. It can still catch the obvious mismatch before a plan turns into too much pace, not enough base, and a tired long run every weekend.
Use the calculator
Goal check
3:00 marathon
Stretch, low margin
16 weeks
Limiter: Current mileage is not yet big enough for the target pace.
First change: Build the base before adding more marathon-pace work.
Risk: If goal pace already feels like racing, the block needs more support before more proof.
Calculator
Run the goal check.
Enter the basics. You will see the quick read on the page before you decide whether to send anything.
Your quick read
Sent.
The detailed notes are below. I will read through the same result and reply if coaching looks like a fit.
Before the block
Use the calculator
Run the check before you change the plan.
If the goal fits, keep building. If it does not, adjust the block before the workouts start making the decision for you.