There's one important difference, and that is that you can say e.g. no pares de correr but you cannot say *no te pares de correr. So there's a construction [parar de + infinitive] but no equivalent construction using the pronominal pararse.
There's one important difference, and that is that you can say e.g. no pares de correr but you cannot say *no te pares de correr. So there's a construction [parar de + infinitive] but no equivalent construction using the pronominal pararse.