Around 80 cars will be racing around Jersey's lanes over the next two days.
World Rally Championship to club level rally cars will be whizzing around more than 100 miles of road.
The event involves 170 drivers and navigators, plus support crew, 300 marshals, officials and spectators.
The northwestern and eastern parishes are turned into rally stages on Friday and Saturday
Among the field is Jersey-born driver Ed Fossey and Guernsey's Will Rutherford. Around half the participants have come from outside the island.
Rally HQ is the RJAHS in Trinity, where the action is being broadcast on big screens in the main hall.
The racing will mean that numerous roads across Jersey will be closed at certain times for the various stages.
You can see the different rally stages, and what times the roads will be closed below:
St Martin
Roads closed Friday 12pm-5pm.
Grouville
Roads closed Friday 12pm-5pm.
St Clement
Roads closed Friday 6pm-10:30pm.
Archirondel
Roads closed Friday 6pm-10:30pm.
St Ouen
Roads closed Saturday 7:30am-12:45pm.
Grève de Lecq
Roads closed Saturday 7:30am-12:45pm.
Trinity
Roads closed Saturday 12:45pm-5:30pm.
Longueville
Roads closed Saturday 12:45pm-5:30pm.
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