Start on a basic treadmill, earn points, move to quicker machines, and race against elite runners to win coins. Rewards unlock shoes, skins, and stat boosts that make each sprint feel snappier—all in the browser. Run drills to build speed, then enter races. Sessions loop between training on machines and head-to-head sprints where clean starts and lane choices matter. Coins from wins feed upgrades, so your next heat begins stronger than the last. New modes include a take on red light/green light and a fast tag variant that shake up the rhythm. Built for short bursts that stack into longer climbs through the leagues: a few minutes of drills, a race or two, a couple of upgrades, repeat. It runs in the browser on phone, tablet, and computer, so picking up where you left off is quick.