Ultra training, today

The most unpredictable format in running.

And no tool understands it.

Laps instead of miles, a fixed hourly clock instead of free pacing, rest as part of the strategy — your running app only knows one distance goal.

Backyard isn't a race against the clock.
It's a race WITH the clock.

How your loop simulation builds itself

Preset. Pace.
Rest window.

Watch a preset turn into a full lap plan — real numbers, not placeholder data.

Backyard standard · 6.706 km / 60-min clock
Target pace
6:25/km
Lap time
43:02
Rest window
16:58
Laps stack up
0 laps × 6.706 km
Lap after lap

No finish line at mile 26.
A finish line every lap.

A Backyard race type built around a lap target instead of a goal time, time-based planning for long runs, curated templates — and an honest stance: zero invented ultra predictions.

3curated templates: Backyard sim, time long run, back-to-back60minute clock — matching the real format0invented predictions — honest instead of guessing
No subscription needed · Core features free, always

Also in the box:

Planned-vs-actual profiles

See what's coming before your session — and afterward, as an overlay, exactly how closely you hit the plan.

intervals.icu sync

Plans to your device, workouts back — automatic, both directions, including your zones.

Sleep & check-in

Your morning logged in 10 seconds — feeds straight into your readiness score and traffic light.

Ready to plan your first real loop simulation?

Sign up free

Frequently asked questions

Can I actually simulate a Backyard Ultra, not just plan a long run?

Yes — the loop simulation mirrors the format exactly: fixed lap distance, a fixed clock (say, 60 minutes), and your target pace automatically determines how much rest you get each lap.

Does Hyspo predict how many laps I'll survive?

No, deliberately not. In a Backyard Ultra, fitness alone doesn't decide — nutrition, sleep strategy, and mental game usually matter more. A made-up number would just mislead you, so we don't offer one.

Can I plan a long run by time instead of distance?

Yes, as its own template — three hours by duration instead of a kilometer target, including the note that walk breaks at this length are normal practice, not weakness.

How fast can I get a ready-made session without configuring everything myself?

One click, from the template gallery: Backyard simulation, a time-based long run, or a back-to-back block for two consecutive days — all pre-filled with sensible defaults you can still adjust afterward.

What happens to my lap count after the race?

You log the laps you completed as your result — Hyspo shows it on the detail page, independent of any goal time, because in a Backyard Ultra the lap count itself is the result, not a finish clock.