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Negative Split

A faster 5 km comes from what you do on the other six days. This is the app for those days.

  • Your splits, every week. See the kilometre where you actually lose the time.
  • A session for today. Not a 16-week PDF — one thing, today.
  • Your numbers only. No leaderboards, no ranking you against strangers.

What's your 5 km right now?

Your most recent time — not your best ever. Every pace in the app is calculated from this.

Format mm:ss

What are you chasing?

A target time and a date to aim at.

How many days a week can you run?

Be honest — a plan you actually do beats a better plan you skip.

Before you start

This app is independent. It is not endorsed by, affiliated with, or supported by parkrun Global Limited or any of its subsidiaries, or by any other event organiser. You enter your own event time yourself; the app does not connect to any event's results system.

It is not medical advice. Training, sleep and recovery guidance here is general information based on published sports-science research. It is not a substitute for a doctor, physiotherapist or coach. If something hurts, see a professional.

It won't promise you seconds. No app can honestly tell you how much faster you'll get. This one shows you what you actually did and prescribes what to run next.

Today

0day streak

Chasing

—

Best so far

—

Today's session

—

✓ Logged today

Last night's sleep

Rest of the week

Timed 5 km

Log the result and see where the time went

Kilometre splits — from your watch, or leave blank

Pacing

—

—consistency
—fastest km
—slowest km

History

Progress

Your own numbers over time

5 km time

Pacing consistency

Higher is more evenly paced. Even pacing is the cheapest time you'll ever find — it costs no extra fitness.

Sleep — last 14 days

This week

0sessions done
0current streak
0best streak

Plan

Threshold-focused, built around your event day

Your week

Your training paces

Calculated from your most recent 5 km time by arithmetic — no guessing, no AI. Re-run a timed 5 km and these move with you.

Settings

Saved ✓

The evidence behind this

Everything is stored on this device only. Nothing is uploaded anywhere.