Methodology in practice
Polarized 80/20
3 CoachUpFit athletes whose outcome validates the Polarized 80/20 principle. Each links to the full case study and to the underlying research on /methodology.
Read the methodology →ATH-R17
Runner · Half Marathon
Threshold pace: +9%
Race simulation improved by 11:24 and athlete completed race at 1:39:12.
Duration: 8 weeks
Read the case →
ATH-R31
Runner · Marathon
Marathon: 3:27:14 (sub-3:30)
Completed race at 3:27:14. First sub-3:30 in four marathon attempts. No mid-race pace collapse in the final 8km.
Duration: 14 weeks
Read the case →
ATH-G42
Gravel cyclist · Endurance build
200km gravel: 9h22 (no walking)
Finished in 9h22 with negative split (faster second half by 8 minutes). No bonk, no GI issues. HR drift on the final climb stayed under 5% — the metric that flagged the previous attempt's collapse.
Duration: 14 weeks
Read the case →