A deadline is not a plan
Picking a race date does not create the weeks needed to build for it. The long run has to climb at a rate your body tolerates, and that rate does not care what is on the calendar.
Free check
Is your goal race realistic?
Most training apps sell you the plan. This one tells you first whether the plan can work — how many weeks a safe build actually needs, what is holding yours back, and the honest alternatives if the answer is no.
Included on this page
Tells you when the answer is no, and why
Names the binding constraint: the calendar, your weekly distance, or your long run
Runs on the same engine that builds Runapt plans
Free · no signup
Is your goal race realistic?
Goal finish time (optional)
Computed by the same engine that builds Runapt plans — so this can never clear a race the plan builder would block.
You have enough time and enough base to build this safely.
Training notes
Make the plan fit the runner.
Sometimes more weeks do not help
If your weekly distance caps your long run below what the race needs, extra months change nothing. The check says so rather than selling you a longer plan.
A no is worth more than a yes
Finding out in week one that a race is out of reach costs you a refund window. Finding out in week fourteen costs you the race, and often an injury with it.
FAQ
Is the race reality check free?
Yes, and it needs no account. Enter your race, your timeline, and your current running, and you get the verdict and the reasoning behind it.
How does it decide whether a race is realistic?
It derives your training profile, then computes the minimum weeks a safe build needs from three terms: the distance floor for that race, the time to raise your weekly volume at a safe growth rate, and the time to progress your long run to race-ready. The largest of the three wins.
Why does it sometimes say more weeks will not help?
Your peak long run is bounded by your weekly volume and by the time you have available for a single run. Neither is a function of the calendar, so when one of those is the binding constraint, extra weeks do not move it. Raising weekly distance does.
Does it predict my finish time?
It projects one when it has independent evidence of your fitness, such as a recent race result. If all it has is the goal time you typed, the projection would just be your own goal handed back to you, so it says that instead of pretending.
Is this the same logic Runapt uses to build plans?
Yes. The check calls the same feasibility computation the plan builder uses, so it can never clear a race that the builder would then block at creation.
What if it says my race is not realistic?
You get options that were each re-checked: moving the race out, keeping the date with an adjusted goal time, or dropping to a shorter distance. Only options that actually clear are shown.
Related guides
Keep building the plan.
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Open guide →Adaptive plan
Want this adjusted to your fitness, recovery, and schedule?
Start your Runapt plan and turn this calculator or sample structure into a race block that adapts when life changes.