Rally book — one file for the whole rally
Everything the Rally computer needs for one event lives in a single file: the rally book. Load it once and the app is set up — target average speed, course notes, checkpoints, the route on the map, even the event name and logo on the screen you drive with.
A rally book is a plain JSON file, so it travels by AirDrop, e-mail, iCloud Files or a link, and one navigator can prepare it for the whole team.
What a rally book carries
- Identity — event title, subtitle, description, logo, organizer credit, website and a disclaimer. Shown when the book is loaded, on the rally control panel before the start, and in My rallies.
- Session settings — target average speed, off perfect time source, tech and minimum speed, odometer behaviour. See Session options .
- Segments — optional legs with length, average speed and notes.
- Course notes — the road book: mile markers, instructions and remarks, triggered by distance driven.
- Route — the course line, drawn on the rally map and in the map gauge.
Load a rally
Open Rally settings (rally control panel > MENU > Open rally settings, or the settings button in the panel), tap the ⋯ button and open Load rally:
- Rally library (download a rally book) — opens the rally library inside the app. Tap a load link and the book is downloaded, the target average speed you picked is applied, and the app offers to switch to the Rally computer with the book’s units.
- My rallies (saved on this device) — every rally you load or save is kept here, so switching events never loses the previous one. Tap to load, swipe to rename or delete, and use the button above the list to save the current rally under a name.
- Import a rally book from files — pick a
.jsonrally book from Files or iCloud Drive.
You can also simply open a rally book you received: tap it in Files or in the e-mail and choose Speedometer 55.
Share or back up
In the same ⋯ menu, Share or backup offers:
- Rally file (JSON) — the whole rally as one file: identity, segments, course notes, route and settings. Save it to Files, send it to the team, or keep it as a backup you can restore later.
- Road book (PDF) and Road book (HTML) — a printable notebook of the event: title block, summary with the target speed, total distance and ideal time, a map of the route, the segment table and the course notes in road-book columns. Useful for the co-driver’s clipboard and for the drivers' meeting.
Build a rally from what you already have
If the event has no ready-made book, build one from data already in the app. In Rally settings, tap Add waypoints or a track to the rally:
- Waypoint collection → course notes — every waypoint becomes a course note at its distance along the course, with its name as the marker and its note as the instruction, and keeps its position for the map.
- Track → route — a recorded or imported track becomes the rally route. If that track has linked waypoints, the app offers to bring them in as course notes at the same time.
Keep the route with your tracks and on the main map

Once the rally has a route, the Route and notes in the app section closes the circle:
- The route is shown with its length, so you can see at a glance that the book carries the course.
- Save the route as a track puts the course into your own tracks; a track you added to the rally is already linked.
- Show the track on the main map pins it, so the course line stays on the map outside the Rally computer too.
- Save course notes as waypoints turns the located notes into a waypoint collection.
Related:
Rally computer ▪︎ Rally settings ▪︎ Course notes ▪︎ Rally map ▪︎ Session options ▪︎ Rally library