The constables, nicknamed the Seaside Five, dared each other to see how far they could get away from their police base in Gwent, South Wales without being caught.
They then took photos of each other at various seaside locations and on fairground rides.
Their fun eventually came to an end when their car broke down on the way to seaside town Weston-Super-Mare and their bosses asked why they were out of the catchment area.
Each of the officers has a separate hearing this week, and could be fired from the force if found guilty.
A spokesman for the Independent Police Complaints Commission said: "It's an internal disciplinary hearing and we will make a statement in due course when the hearings are concluded and we have an outcome."
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