# Laktic Pace Calculator — Heat-adjusted threshold paces

> Heat-adjusted running pace calculator for training and racing. (iPhone/iPad app by Travis Mahoney.)

- Source: https://appshunter.io/ios/app/laktic-pace-calculator/id6808660864 (this page in markdown: same URL + `.md`)
- Developer: [Travis Mahoney](https://appshunter.io/developer/1896344290)
- Category: Health & Fitness, Sports
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 15.1 · 28 MB
- Languages: American English
- Released: 2026-09-14
- Data updated: 2026-10-11
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/laktic-pace-calculator/id6808660864/reviews.md

## What is Laktic Pace Calculator?

Today's threshold paces, adjusted for the heat. Enter a race PR, track or road, and get LT1, Sub-T and LT2 ranges slowed for the temperature and dew point at your track, now or at practice time. Coaches: add your roster, write a note, and share the board as a card.

Enter a 5000m, 3200m, 3000m, 1600m, mile or 1500m PR, or a 5 mile, 10K, half marathon or marathon PR, and the app computes the Track and Road Performance training zones: Easy, Long Run, Steady, and the three threshold zones LT1, Sub-T and LT2, with race-pace rows for road distances. Miles or kilometres, your choice. Get today's temperature and dew point for your location, pick a practice time for that hour's forecast, search a city or ZIP, or type the numbers yourself, and every pace is slowed by the heat penalty.

The adjustment is scaled by rep length. Short threshold reps with recovery build less heat load than continuous running, so 1–3 minute reps take half the penalty, 4–6 minute reps three-quarters, and 7–10 minute reps and continuous runs the full amount. Within each threshold zone, short reps sit at the fast end of the range, medium reps in the middle, and long reps at the slow end.

Every pace shows the per-mile range and the seconds-per-400 m split, so it goes straight to the track.

For coaches: keep a roster of athletes on your phone and build a workout board for today's conditions. Pick a zone and rep length and see every athlete's heat-adjusted range, fastest first, filtered by group. Write a note on the board and share it as a card, along with today's paces, the heat, a new PR or a finished session. Log a session: type your reps and see hit, hot or cold against today's band. Export the roster as a file, import one from an assistant coach, or copy a share link that opens the same roster in the web version.

How the heat model works: heat score = temperature °F + dew point °F. At 100 or below there is no adjustment. The penalty rises to 10% at 180. Above 180 the app tells you running is not recommended and shows paces at the cap for reference only.

Privacy: your location is used only to fetch the weather and the town name. Athlete names and PRs stay on your device unless you export or share them; share cards are drawn by our server from the numbers on screen and are not stored. Sign-in is optional. No tracking, no ads.

Training guidance, not medical advice. Use judgment in extreme conditions.

Pace engine: Track and Road Performance. Weather data by Open-Meteo.

## Key features

- Heat-adjusted threshold paces
- Race PR and track/road pace calculation
- Temperature and dew point adjustment
- Rep length scaling for heat penalty
- Athlete roster management for coaches
- Workout board sharing
- Session logging and performance comparison


## Frequently asked questions about Laktic Pace Calculator

### What is Laktic Pace Calculator?

Laktic Pace Calculator is a free app that helps runners and coaches adjust training and race paces based on current temperature and dew point. It calculates threshold zones and per-mile ranges, factoring in the heat penalty for different rep lengths.

### How does Laktic Pace Calculator adjust paces for heat?

The app uses a heat score derived from temperature and dew point. The adjustment penalty increases as the heat score rises, with a 10% penalty at a score of 180. For rep lengths, shorter reps take a smaller penalty than longer, continuous runs.

### Can coaches use Laktic Pace Calculator for their athletes?

Yes, coaches can manage athlete rosters, create workout boards with heat-adjusted paces, and share them as cards. They can also log sessions and compare athlete performance against target bands.

### What distances can I input for PRs in Laktic Pace Calculator?

You can input PRs for 5000m, 3200m, 3000m, 1600m, mile, 1500m, 5 mile, 10K, half marathon, and marathon.

### Does Laktic Pace Calculator have ads?

No, Laktic Pace Calculator is ad-free. The privacy policy states there are no ads and no tracking.

### What devices does Laktic Pace Calculator support?

Laktic Pace Calculator is available for iPhone and iPod devices.

### How often is Laktic Pace Calculator updated?

The app was last updated on October 3, 2026, with version 1.1.1. This indicates a relatively recent update.

### Is Laktic Pace Calculator suitable for all ages?

Laktic Pace Calculator has an age rating of 4+, making it suitable for a wide range of users. However, it provides training guidance and advises users to use judgment in extreme conditions.

## Version history (last 3 releases)

### 1.1.1 — 2026-10-03

Road distances: enter a 5 mile, 10K, half marathon or marathon PR and get race-pace rows next to your training zones. Miles or kilometres, your choice.
Forecast paces: pick the practice time and every pace is set for that hour's heat, so a 10 am board is right at 3 pm.
Coach notes on the workout board, and share cards for the board, today's paces, the heat, a new PR and a finished session.
Log a session: type your reps and see hit, hot or cold against today's band.
A default athlete that loads on launch, "View paces" on every roster row, and a profile screen for signed-in coaches.
Resources: how it works in the coach's own words, Laktic Pro preview, upcoming courses and plans.
Smoother motion, clearer colours, larger touch targets, and a long list of small fixes.

### 1.1.0 — 2026-09-15

Optional accounts: sign in with Google, Apple or email to keep your roster on every device.
Light and dark themes, a heat-score ring, and rep-length paces for every threshold zone.
Roster template: download the spreadsheet, fill it in, and import your whole team from a CSV.
Workout board filters in one row. Celsius option. Resources tab with a preview of Laktic Pro.
New Laktic launch screen. Now at lakticrunning.com.

### 1.0 — 2026-09-15

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-11.*