RunCalc

Altitude conversions for runners and coaches.

What RunCalc does

• Converts race times across any altitude — sea level to 10,000+ ft
• 190+ NCAA tracks, indoor and outdoor, with verified elevations
• Custom altitudes — enter any elevation in feet or meters
• 16 race distances supported, from 60m through marathon
• Pace splits — 200m, 400m, 1k, or mile intervals
• Equivalent times across distances using the Riegel formula
• Conversion history, track favorites, GPS proximity detection

What RunCalc does NOT do

• Exactly reproduce the NCAA's current internal conversion algorithm (their tables are proprietary)
• Offer training plans or coaching advice

How the conversion works

RunCalc applies a per-race-distance altitude correction above 3000 ft, calibrated against published NCAA championship-meet conversions and snapshots of the TFRRS conversion tool. Sprints (100m–400m) are largely unaffected. Longer races take a larger penalty as VO₂max declines with elevation.

Privacy

RunCalc runs entirely on your device. We do not collect, transmit, or store any personal data on external servers.

• Conversion history & favorites: stored only in iOS UserDefaults on your device.
• Location: used only to detect a nearby track when you allow it. Coordinates never leave the device.
• Altitude: read from the device barometer/GPS when permitted. Never transmitted.
• Ads: certain optional features are unlocked via a rewarded video ad served by Google AdMob. AdMob's data practices are governed by Google's policies; see Google AdMob privacy.

Important notes

• RunCalc is NOT AFFILIATED WITH THE NCAA.
• NCAA conversions can change without notice. Treat this app's output as a high-quality estimate, not an official mark.
• The NCAA has historically not converted altitudes below 3000 ft. RunCalc matches that rule.
• Original altitude algorithm thanks to Tim Rowberry, former UVU assistant track coach.

Support

Questions, bug reports, feature requests: runcalcapps@gmail.com

Best of luck out there.