Running

4 clues
Flowing
Sprinting
In succession
Participating in a sprint
Similar answers:
Abandoning
Abaserunner
Abclistening
Abcrunch
Abcrunches
Aborning
Abstaining
Adjoining
Adorning
Adrywhiteseasoning
Advanceplanning
Advancewarning
Affairwarning
Afoolsgerund
Airconditioning
Alewarning
Alightningbug
Aligning
Alining
Alittlelearning