estaban corriendo
Imperfect progressive ellos/ellas/ustedes conjugation of correr.

correr

Las cosas se estaban corriendo lejos de.
The things you were running away from.
Rápidamente y en pocos años ya se estaban corriendo multitudinarias regatas y creando asociaciones por todo el mundo.
In few years multitudinous regattas were moving and creating associations for all-around world.
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sleepyhead