Train & Race.
Five Sports.
Your Effort.
An erg-first indoor training and racing platform. Connect compatible rowing, ski, cycling, or running equipment and bring your real effort into immersive 3D worlds. Sport and device support vary.
Make repetitive erg sessions more engaging: explore a route, enter a race, or measure your progress against a personal-best ghost.
Free throughout open beta. No credit card. See what’s included · Privacy
Workouts export to standard FIT files, with per-second activity data.
Browser access remains open beta as before — no invitation needed.
Nordic Skiing
Glide through stunning winter landscapes on your ski erg
Rowing
Race through scenic fjords and regatta courses on your rowing machine
Running
Run through procedural worlds on your treadmill or with a running power sensor
Cycling
Ride open roads and velodrome track events on your smart trainer or power meter
Kayaking
Sprint Olympic distances or paddle a procedural lake with a supported KayakFirst erg — or use a compatible rowing erg as your paddle input
Endurance Gauntlet
Chain multiple sports back-to-back into one continuous race. Ski, row, run, and bike on a single cumulative clock — pick a preset format or build your own leg-by-leg. Race 10 ghost competitors whose standings carry across every leg.
Competition formats are content.
Each format is a reason to come back, a reason to enter, and a reason to broadcast.
Gauntlet
Multi-sportMulti-sport brick — the indoor answer to hybrid racing
Team Sprint
RelayRelay-style lane racing between clubs or teams
Madison
CyclingPoints-race cycling with partner hand-off exchanges
Ghost Racing
Solo / vs PBAgainst your own past effort, or anyone else's PB
Velodrome & Criterium
CyclingBuilt-in procedural circuits — no GPX needed
Skimo
SkiingClimb legs with descent corridors after each summit
Runs on Any Device
Browser-based with Bluetooth connectivity. No downloads, no installs — just open and train.
Works in Chrome, Edge, and other browsers with Web Bluetooth support. For browser Bluetooth on iPhone / iPad, use Bluefy browser to connect your erg. The native iOS app is also working with native Bluetooth — no Bluefy required. Join the public TestFlight beta.
Why Endurance Worlds?
Train in immersive 3D across Nordic skiing, rowing, running, cycling, and kayaking. Built by endurance athletes, for endurance athletes.
5 Sports, 1 Platform
Train across Nordic skiing, rowing, running, cycling, and kayaking from one indoor platform.
Bluetooth Connected
Connect your erg, smart trainer, power meter, or treadmill via Web Bluetooth. Your real effort drives your in-game athlete — power, stroke rate, cadence, pace, all captured live. More devices added over time.
Heart Rate Integration
Pair your Bluetooth HR strap for live heart rate tracking. Every second of HR data is recorded and exported to your FIT files.
Immersive 3D Worlds
Train in procedurally generated environments — draw any custom route at any distance, or import a real-world GPX route.
Race & Compete
Race against AI bots with realistic pacing, compete in multiplayer, or chase your personal best ghost. Team Sprint relay mode included.
FIT File Export & Strava
Every workout exports to standard FIT format with per-second power, HR, and cadence data. Auto-upload to Strava.
More Devices Coming
We currently support PM5 monitors, FTMS smart trainers, cycling power meters, treadmills, running power sensors, and Bluetooth HR straps. Ellipticals that provide power data over FTMS Bluetooth should also work. New connectable training devices and ergs are being added over time — our goal is to support every indoor endurance machine out there.
Have a device you'd like to see supported? Let us know after signing up.
How It Works
Create your account
Sign in, choose a sport, and select a built-in course, draw a route, or import a GPX route. No download is needed to get started.
Connect
Open Endurance Worlds in a supported browser and pair compatible equipment such as your erg, smart trainer, power meter, treadmill, and optional HR strap via Bluetooth — where supported. Equipment support varies by sport and device.
Train & Compete
Your real effort drives the game. Race bots, chase ghosts, export FIT files, and sync to Strava automatically.
Open beta access
Every current feature is free to try.
Train, race, save your progress, and export workouts to FIT. Free throughout open beta; no credit card required.
Will it run on my device?
Endurance Worlds runs in your browser — nothing to install on a computer. Here's the short version of what you need.
Computer / Laptop
- 2017 or newer: Smooth at full detail.
- 2014 – 2016: Playable; lower frame rates and slower course loads.
- Pre-2014: Likely too slow — modern graphics required.
Use Chrome or Edge for full Bluetooth support.
iPad
- iPad Air 3 / Pro 2018 / iPad 7th gen (2019) or newer: Smooth, courses load in a few seconds.
- iPad 2018 / Pro 2017: Works; slower loads.
- iPad Air 2 or older: Too little memory — expect stutters.
For browser Bluetooth, use Bluefy. The native iOS beta uses native Bluetooth and does not require Bluefy.
Phone
- iPhone 11 (2019)+: Runs, but the screen is small for pace / power / HR.
- Android from 2019+ with 4 GB+ RAM: Same — works, but better as a backup.
A tablet or laptop is the recommended primary device.
Rule of thumb: if your device is under about 6 years old and isn't a budget-tier phone, you're good. A 5 Mbps internet connection is plenty.
Join the Community
Connect with other indoor endurance athletes, share routes, get tips, and follow development updates on our Discord server.
Join Discord ServerReady to transform your training?
Create an account, pair compatible equipment, and make indoor training feel like more than another session staring at a screen.
Free throughout open beta. No credit card.