Your race. Your pace. Executed.
Km-by-km race execution plans built on Riegel, McMillan and VO₂ Max science. Runs on Apple Watch.
Run Wollongong
Half Marathon · 21.1 km
Finish time prediction
Tough
1:53:40
Likely
1:49:15
Good
1:46:30
Wristband splits
Apple Watch ready0–5
5:10
5–10
5:06
10–15
5:02
15–21
4:58
Used by runners at
The signature
21 kilometres. One plan.
Every bar is a kilometre. Every colour is an effort zone. Your plan isn't a flat pace — it's a strategy that builds, holds, and finishes strong.
Easy
Km 1–5 · settle in, stay controlled
Build
Km 6–10 · find your race rhythm
Target
Km 11–15 · hold race pace
Hold
Km 16–21 · race to the line
Built on science
Not a pace calculator. A race execution engine.
Riegel · McMillan · VO₂ consensus
Three independent predictive models are run on your inputs. The consensus result is more accurate than any single formula alone.
Km-by-km execution
Each kilometre has a target pace, heart-rate zone, and effort label. No ambiguity at any point in the race.
Pre-set fueling timeline
Gel timing, electrolyte windows, and caffeine strategy are baked into your plan. You just follow the alerts.
How it works
From zero to race plan in under two minutes.
Tell us about your race and training
Race date, distance, goal time, weekly mileage, a few key details. No account required.
The AI builds your personalised plan
Riegel and McMillan models run your inputs. The AI synthesises the result into a detailed execution guide.
Execute with confidence
Follow your pacing bands, fueling schedule, and decision points. Everything is already decided.
Apple Watch app
Your race plan.
On your wrist.
Load your plan to Apple Watch before race day. Live pace, fueling alerts, and decision points — without touching your phone.
- ⚡
Fuel alerts
Timed gel and electrolyte reminders exactly when you need them.
- 📍
KM-by-KM pace
Target pace for every kilometre, right on your wrist.
- 🧠
Decision points
Pre-set check-ins that tell you what to do in the moment.
Download on the
App Store
Sample plan
This is what you get.
A real plan generated for a runner targeting the Run Wollongong Half Marathon. Sub-1:50 goal.
Finish time prediction
Tough day
1:53:40
Most likely
1:49:15
Good day
1:46:30
Distance
21.1 km
Conditions
18°C / 72%
Avg pace
5:12/km
Pacing bands
0–5 km
5:10/km
Easy
5–10 km
5:06/km
Build
10–15 km
5:02/km
Target
15–21 km
4:58/km
Hold
Fueling timeline
Stop guessing.
Start executing.
Your km-by-km race execution plan, built in the app in under two minutes.