One way to check that easy is easy is to try and have a proper conversation with a running partner or call up a mate/wife/gf on the phone. There shouldn't be any labored breathing or forced skipped words etc. At the start easy may very will be somewhere between a fast walk and a slow jog, and this can feel quite awkward. Even when you get faster easy can actually feel quite awkward because it feels natural to run at a faster pace, the problem is that only ever increases your injury risk.
For reference, I do most of my running at 8:20 to 8:40 min/mile pace. I did a 10K in 37 minutes, about 5:56 pace, a very hilly half marathon in 1H:22M so 6:15 pace etc. On recovery days or the start of long run I might actually be at 9 minute pace.
There is a misconception that runnign faster will make you race faster, but the opposite tends to be more true. Running faster increases impact on joints and so increases injury risk. It also requires longer to recover that can reduce the amount of training in a week. Running faster will also reduce the amount of time you can run for, again reducing the training quality. Running faster can also put you into a a state that is neither beneficial for endurance or for peak aerobic fitness (VO2Max). There is a no-mans land between what is actually easy, and what is hard. Very easy to fall in to the trap of running in this dead zone (Zone 3 of heart rate). Runs either need to be at a genuinely easy pace, or you need to work really hard at soemthign like intervals in zone 5 , or potentially a lactate threshold run in Zone 4.5 etc. Furthermore, the benefits of the real hard runnign are much less than you would expect, important for absolute best performance but ultimately your easy running is what will dictate your performance in a race. Consistent high volume of easy running that lets you properly recover and train without injury is the key to seeing high returns on training. And with your easy runs being actually easy, you will find you can perform better in the hard workouts. For example I could run at maybe 7:30 pace without feeling that it i s hard at all, but it causes much more wear and tear on my body and means I get much more tried or can't achieve the same volume. Worse still is if I try and do soemthign like 10x800meter repeats on a track my legs are already toast before I've stared. Running at 8:30 pace means I can nail that hard workout.
Several people in my runnign group have never done intervals sessions, tempo runs, anaerobic threshold run etc. Everything is easy, real slow, they get passed by everyone on the street. Come race day they are picking up the gold medals, runnign 3 minutes a mile faster in a marathon than there Long run pace etc. Even in a 1mile to 5K race they are on the podium