July 2025

Why are My Garmin and Strava’s Race Predictors so far off? I asked AI.

p50f / July 3, 2025

The Conundrum That Sparked a Deep Dive You lace up, track your training, put in the klicks or miles, and check your devices hoping for some feedback. And then you see it: your Garmin race predictor says you could run a sub-2 hour half marathon, while Strava suggests you’ll be closer to 2:20. So who’s […]

aerobic decoupling, garmin race prediction, garmin vs strava, heart rate training, Plus50Fit predictor, race predictor accuracy, running metrics, strava race prediction, training data analysis, TrainingPeaks data, VO2 max

Why are My Garmin and Strava’s Race Predictors so far off? I asked AI. Read Post »

Running Journey

Thought of the Day – July 2, 2025

p50f / July 2, 2025

Cutback weeks always boost my ego. Finally, a week where the plan feels manageable instead of maniacal. Today’s run calls for 2 × 7 minutes at tempo/threshold pace (low Z4), and honestly, I’m here for it. After last week’s effort with more reps, longer duration, and oppressive heat, this one feels like a confidence booster.

cutback week, running after 50, tempo run, training mindset

Thought of the Day – July 2, 2025 Read Post »

Endurance Running, Fueling & Hydration, Marathon Training, Tempo Runs