Training Programs?

Howdy Folks,

Road runner joining the dark side, bit after a couple weekends ago where I ran a 10k, 12k, and half marathon on singletrack. Those were my first trail races and im hooked.

But I've been browsing both reddit and the internet, seen a lot of different ideas. I'm curious what everyone's training regiment looks like?

I am familiar with methods like the 80/20 which I previously used for road running but if I were to run exclusively trails like I would prefer (I have a lot of trails around) then I would imagine I need a metric besides HR Zone training. Or alternatively do I just need to accept being a snail now and continue using the 80/20? I've just been trying to cruise 12:00 - 14:00 min/mile type paces and my garmin says i'm doing okay. ¯_(ツ)_/¯

Just looking for some ideas, strange new world over here.

Happy Trails!