The "Biggest Climb" statistic on your profile page is calculated from the segment you've completed with the most elevation difference between the start and end. This biggest climb does not reflect the largest total elevation gain you've achieved on a ride. In order to qualify to be your Biggest Climb, that segment must be a Strava categorized climb and be matched to your ride. For more information about categorized climbs, see here.
If your biggest climb is incorrect, contact us directly with a link to the activity for a recalculation.