Train Smarter.

Race Faster.

Five powerful tools built for runners — calculate pace, predict race times, generate training zones, view per-mile splits, and track every result. No subscription. Just running.

Download on the App Store
See how it works
Stride app on iPhone
⚡ Pace Calculated
9:09 /mi
Half-Marathon · 2:00:00
🎯 Training Zones
Recovery
10:40–11:25
Tempo
8:50–9:15
Rep / Speed
7:55–8:20
🏅 Race Prediction
4:10:11
Marathon · from half result
📋 Mile Splits
Mile 19:09
Mile 218:18
Mile 327:27
Mile 436:36
Features

Everything you need to run smarter

Pace Calculator

Enter any two of distance, time, or pace — Stride solves the third instantly. Supports 5K, 10K, Half-Marathon, Marathon, and any custom distance in miles or kilometers.

Pace Chart

A full reference table across 15-second pace intervals for 5K, 10K, Half, and Full distances. Switch between per-mile and per-km in one tap.

Race Predictor

Enter any recent race result and predict equivalent finish times across all standard distances using the proven Riegel formula used by coaches worldwide.

Training Zones

Set your goal race and target time. Get five calibrated training zones — Recovery through Rep/Speed — tuned specifically to your event distance and goal.

Run History & Splits

Every calculation is saved automatically. Tap any entry to instantly view per-mile or per-km splits for the full distance — great for race-day pacing plans.

Light & Dark Mode

Easy on the eyes at 5am or 10pm. Switch between light and dark themes with a single tap — your preference is saved automatically.

The App

Clean. Fast. Built for runners.

Stride app screens
How it Works

Pick a tool. Enter your numbers. Get your answer.

1

Choose Your Tool

Open the Calculator for a quick pace, switch to the Predictor before a race, or head to Training to dial in your zones — five tools, always one tap away.

2

Enter Your Numbers

Use the smooth scroll pickers to set time, distance, or pace. Select from preset race distances or enter any custom value in miles or kilometers.

3

Get Instant Results

Stride calculates immediately — with full per-mile splits, calibrated training zones, or predicted race times depending on the tool you're using.

4

Review Any Time

Every calculation is saved to your History. Tap any past result to pull up the full splits view — perfect for reviewing your race plan the morning of.

The running toolkit
in your pocket.

Coming soon to the App Store — free, no account required.

Download on the App Store