Here’s a scenario I see all the time. A runner picks a race, picks a goal time, and heads to a pace calculator. The calculator says: 8:00 per mile. So they start training at 8:00 per mile.
Nobody asked the more important question:
Can your body actually get there by race day?
That question is where injuries live. Most running injuries aren’t bad luck—they’re training errors, and the most common one is doing too much, too soon. A goal that outruns your timeline forces exactly that error. You build mileage faster than tissue adapts. You force workout paces your current fitness can’t support. And somewhere around week six, your calf or your shin sends the bill.
The pace calculator mentions none of this. So I built one that does.
What it does
The first part works like the calculators you know. Pick a distance, enter a goal time, and you’ll get your race pace, predicted times at every distance from the 400m to the marathon, and training pace ranges for your easy runs, tempo work, and intervals.
The second part is the one I care about. It’s called the Reality Check, and it asks for two more numbers: your current weekly mileage and how many weeks until race day. Add a recent race or hard effort and it gets even sharper.
Then it tells you the truth.
If your timeline supports your goal, you’ll get a week-by-week volume plan—built at a safe progression, with step-back weeks where adaptation actually happens and a proper taper at the end. If your fitness already predicts your goal time, it’ll tell you to train well and race with confidence.
And if the goal outruns the timeline? It says so. Plainly. It’ll show you what a realistic target looks like this cycle, and it’ll tell you what I’d tell any athlete: run a great race at the number your body is ready for, then build toward the big goal next cycle. A goal delayed by one season beats a season lost to injury every time.
Why I made it free
Because this is the conversation I wish every runner had before their training block starts, not after something hurts. No email required, no catch. Use it, share it with your training partners, and check back each time you pick a new race.
And if the Reality Check surprised you—if you learned your plan was more aggressive than you thought—that’s worth paying attention to. It’s usually the first sign that your training could use a more deliberate approach to staying healthy. That’s exactly what I do.
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