I built a free HYROX pace & split calculator with Next.js — splits, roxzone & printable pace cards

guoqiang cheng — Tue, 10 Nov 2026 17:41:36 +0000

For the past few weeks I've been building HYROX Pacer — a free, no-login web app that helps HYROX athletes plan their race: target finish time, 8×1km running splits, 8 station target times, and Roxzone transitions, all in one place.

Why

HYROX is booming, but race planning is scattered across spreadsheets, forum posts and YouTube videos. I wanted one interactive tool where you pick your division (Open / Pro / Doubles), set a target time or pace, and get station-by-station splits you can actually race with.

What it does

Target time & splits — enter a goal finish time or pace and get per-lap and per-station targets
Station calculators — official HYROX weights built in (ski erg, sled push/pull, burpee broad jumps, farmers carry, wall balls and more)
Roxzone planner — see how transition time changes your finish
5K finish-time predictor — turn a recent 5K into a realistic HYROX estimate
Printable pace cards — export wristband-style pace cards for race day
English & Chinese interfaces

Stack

Next.js (App Router) + React 19 + Tailwind CSS 4, deployed on Cloudflare Pages. No accounts and no paywall — everything runs client-side, so it stays fast and free.

Try it

👉 https://hyroxpacer.site

Feedback welcome — especially from HYROX finishers: which splits do you actually want to see on race day?

DEV Community: guoqiang cheng

I built a free HYROX pace & split calculator with Next.js — splits, roxzone & printable pace cards

Why

What it does

Stack

Try it