Glasgow → Edinburgh · 57 miles · Saturday 10 October 2026
Bear on the towpath
An anonymous runner, played here by Ice Bear, two canals and a finish-time model fitted to years of watch data. Press play to watch four pacing strategies race the canal, then fiddle with the plan and see what the model makes of it.
0:0006:00
Finished!Click a bear to follow it; the breakdown below switches to that bear. Every bear is the model, each running a different strategy. Bear finish times are the model's point estimates; the median of thousands of simulated races is about 12 minutes slower, because it allows for a readiness penalty.
What's happening now
Distance0.0 km0.0 miles
SectionStart → CP1next aid station
Vs the plan—at the same point
Running pace—HR cap
Overall pace—including walking
Finish—time of day
runningplanned walkforced walkshuffle-jog
Aid station ETAs
| Aid station | This bear | Time of day | Plan |
|---|
Fiddle with the plan
Running heart rate for the first section
The cap rises in steps; released after Linlithgow
Only the share of walking matters to the model
3–5 is typical; standing still is the cheapest time to save
Shuffle = a 9:45/km jog instead of an 11:00/km walk
The data can't choose, so the default averages them
How many beats above normal the heart rate reads for the same effort today. The default is what the data says for this runner right now.
Purple bear's finish
Median—
80% range—
Under 14 hours—