For running · Trail · Road
Every mile, watched.
Live GPS tracking for trail ultras, fell races, and road races — from the phone already in your vest. Share one link and your people follow the whole race live in any browser: the dead-of-night sections, the aid-station stops, the finish. Free for runners, forever.
Wave starts
Your race starts when your wave does.
Big fields go off in timed waves — and every runner's clock starts at their wave's release, not the first gun. Times, gaps, and leaderboard positions are honest across the whole field.
Someone in wave C running the same time as someone in wave A sits level on the leaderboard — no mental arithmetic for the people watching, no asterisks in the results.
Run your race on AsterEach wave's release is its own gun — every runner's time and leaderboard position anchors to their wave, not the first one.
In the race
Built for the way running races.
Trail & ultra safety
Help knows where you are.
On a remote ridge line, SOS sends your live position to your people. Race ops see every runner on one map — no £30-a-head tracker rental, no hardware to hand back at the finish.
Checkpoint splits
Aid station to aid station, live.
Splits at every checkpoint, the gap right now, and who's moving through the night. Following an ultra finally means watching it happen, not refreshing a results page.
For the ones waiting
More than the finish chute.
Your family follows the whole race live, not four hours of waiting at a barrier. One link, no app, no account — they open it and you're there.
For the watchers
Mile 70, 3 a.m. Still moving. Still okay.
Somewhere on a dark hillside they're still moving across the map — and everyone at home knows they're okay. The live map, the leaderboard, the splits: open the link and watch the whole field move. No app to install, no account to make, no per-watcher fees. Ever.
Watch a live race — no signup
Toeing the line?
Free for runners forever, from training days to her first 50-miler — no tracker hire, no card, all-day tracking from one charge. Organisers — let's put your race on the map.