have to run along
(one) has to run along
One has to leave at once or in haste. We have to run along shortly, so no need to set a place for us for dinner.
See also: run
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
(I) have to run along.
an expression announcing the need to leave. Jane: It's late. I have to run along. Tom: Okay, Jane. Bye. Take care. John: Leaving so soon? Sally: Yes, I have to run along.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.