Looking on the internet deeply has found these results:

i was running is the most popular phrase on the web.

i had been running 142,800 results on the web	i was running 12,400,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
PAST PERFECT CONTINUOUS. I had been running, we had been running. you had been running, you had been running. he had been running, they had been�... "As soon as he turned round, I realised I had been running after the wrong person."�... ... that I realised I had run the wrong way." Past Perfect Continuous we have been running you have been running they have been running. Past perfect continuous. I had been running you had been running he/she/it had been �... Pluperfect. I had been running you had been running he had been running we had been running you had been running they had been running�...	Apr 13, 2015 ... Know Yourself/I Was Running Through The Six With My Woes 2016 Drake Remix (Rep: 3 Lettaz). Rep3Lettaz. SubscribeSubscribed�... Feb 13, 2015 ... I was running through the 6 with my woes. And you know how that should goes. You know how that should go. You know how that should go VINE. Krome .... I Was Running Through The Six With My Woes Vine Compilation \| Hilarious! \| MUST�... Mar 18, 2015 ... Forest Gump: I Was Running (Drake) Sep 7, 2012 ... Forrest Gump "I Was Running" Clip Tom Hanks ... I Was Running Through The Six With My Woes Vine Compilation \| Hilarious! \| MUST WATCH�...

i had been running

142,800 results on the web

i was running

12,400,000 results on the web

More popular!

PAST PERFECT CONTINUOUS. I had been running, we had been running. you had been running, you had been running. he had been running, they had been�...
"As soon as he turned round, I realised I had been running after the wrong person."�...
... that I realised I had run the wrong way." Past Perfect Continuous
we have been running you have been running they have been running. Past perfect continuous. I had been running you had been running he/she/it had been �...
Pluperfect. I had been running you had been running he had been running we had been running you had been running they had been running�...

Apr 13, 2015 ... Know Yourself/I Was Running Through The Six With My Woes 2016 Drake Remix (Rep: 3 Lettaz). Rep3Lettaz. SubscribeSubscribed�...
Feb 13, 2015 ... I was running through the 6 with my woes. And you know how that should goes. You know how that should go. You know how that should go
VINE. Krome .... I Was Running Through The Six With My Woes Vine Compilation | Hilarious! | MUST�...
Mar 18, 2015 ... Forest Gump: I Was Running (Drake)
Sep 7, 2012 ... Forrest Gump "I Was Running" Clip Tom Hanks ... I Was Running Through The Six With My Woes Vine Compilation | Hilarious! | MUST WATCH�...