RunCalc: Altitude & Pace

iOS Universel / Sports

Convert race times across any altitude — instantly.

Pick your start and finish track from 190+ NCAA venues, or enter any custom elevation. RunCalc applies a per-distance altitude correction and shows your equivalent time, broken-down splits, and Riegel projections in one tap.

Built for distance and middle-distance runners, track and cross country coaches, and college recruiters comparing PRs across venues.

WHY RUNCALC
The NCAA normalizes race times so collegiate athletes can be compared across venues at different altitudes. Most runners only see those numbers at formal meets. RunCalc puts the math in your pocket — useful for training, recruiting, and pacing on race day.

FEATURES
• Altitude time conversion — sea level to Albuquerque, Boston to Boulder, anywhere to anywhere
• 190+ NCAA tracks, indoor and outdoor, with verified elevations
• Custom altitudes — enter any elevation in feet or meters
• Pace splits — 200m, 400m, 1k, or mile intervals for any race distance
• Equivalent times — Riegel projections from 100m through marathon
• Conversion history — save, revisit, and share past calculations
• GPS proximity — RunCalc detects nearby tracks and offers to use them
• Favorite tracks — star the venues you use most so they pin to the top
• Imperial or metric

HOW IT WORKS
RunCalc applies a per-distance altitude correction above 2000 feet, aligned with the Daniels Oxygen Power tables — the same family the NCAA used historically. Sprints (100–400m) are largely unaffected. Longer races take a larger penalty as VO2max declines with elevation. We are not affiliated with the NCAA.

PRIVACY
No accounts. No analytics. No advertising. No tracking. Location is used only on-device to detect nearby tracks — it is never transmitted.

Made by a runner, for runners.

Got a feature request or bug? Email runcalcapps@gmail.com

Quoi de neuf dans la dernière version ?

v1.2 — full redesign and an upgraded conversion model.

WHAT'S NEW
• Brand-new visual design with a focused single-screen layout
• Animated launch screen
• Horizontal race-distance picker — 16 distances from 60m through marathon
• Elevation curve graph between your two altitudes
• Multi-favorite tracks — star the venues you use most
• Share button to send a conversion summary
• Settings sheet with units toggle (feet or meters)
• "Use current GPS altitude" option in custom altitude entry
• iPad support

UNDER THE HOOD
• Replaced the altitude conversion model with per-distance corrections aligned with the Daniels Oxygen Power tables
• Time penalty now grows with race distance and only kicks in above 2000 ft
• Round-trip conversions are lossless
• GPS altitude readings are validated before use

FROM YOUR FEEDBACK
• Whole track rows are tappable in the picker
• Dark "Pick destination" CTA when no destination is selected
• Cleaned-up navigation titles across all sheets

Keep the bugs and feature requests coming — runcalcapps@gmail.com