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The original was posted on /r/strava by /u/LeftBrainWriteBrain on 2025-09-15 20:21:42+00:00.

I recently ran an 10k WITHIN an 18 mile workout that was 3.5 minutes faster than what Strava currently predicts is my 10k race time….

I swear the predictions have been insanely off since Strava acquired Runna. Maybe the algorithm is different?