# Runner's Tools

> Plan and analyze your runs

Canonical page: [https://chrome-stats.com/d/id1491073558](https://chrome-stats.com/d/id1491073558)

## Overview

- **ID:** `id1491073558`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Frederic Bacro
- **Category:** Health & Fitness
- **Rating:** 5.00 / 5 (3 ratings)
- **Version:** 2.0
- **Last updated:** 2026-03-17
- **First published:** 2019-12-18
- **Size:** 1.76 MB
- **Data as of:** 2026-09-25
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/runners-tools/id1491073558)
- **Website:** [https://runnerstools.vermilion-apps.com](https://runnerstools.vermilion-apps.com/)
- **Privacy policy:** [https://runnerstools.vermilion-apps.com/privacy-policy/](https://runnerstools.vermilion-apps.com/privacy-policy/)

## Description

In what time would I run a marathon based on my last 5K? How fast should I do my tempo runs?
How much did hills, temp and humidity affect my race?
Now you can find out!

Features:

- Race Predictor: Will predict your potential on the most common race distances based on a given one. The automatic calculation uses a dynamic scale but we also made it possible to use your own (single Riegel factor) value. The default gives a realistic prediction, not assuming everyone is a trained high mileage athlete! 

- Training paces: Based on a (planned or recent) race performance, will calculate both the appropriate splits and paces for interval and tempo training

- Track splits: Using GPS for track training is not great. This tool will convert a given pace to the target split of a full lap for each lane of a standard (IAAF) 400m track

- Race Splits: Plan any race by breaking the distance and target race time down by kilometer or mile markers

- Evaluate or plan a race by factoring in elevation, elevation gain/loss, temperature and humidity (dew point)

- Convert any pace from minutes per mile to minutes per km and vice versa

- Calculate the right speeds to set treadmills to, based on pace

- Calculate age graded performance

Works in both metric and imperial system.

## Rankings

- #570,264 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1491073558)