Zwift run training plan integration to run outdoor

I am currently training on zwift for the run portion of my 70.3IM using a 13.1M training plan that I find fantastic. Using Stryd as a footpod to measure speed distance and cadence.

However, I would sometimes like to train outside and therefore carry this zwift plan along with target speeds on either my garmin watch or my iphone, and not be stuck to always train on my treadmill.

Running outside with the zwift app open on my cell is a bit anoying…would prefer to open a less CPU intensive app (maybe integrate this in Zwift companion)  that just tells you when speed changes are attained and such. Moreover, it would update zwift automatically, would earn stard and show the training as completed once over, which would be fantastic.