DaveF wrote:
In my mind any man who is not over weight, is 35 years or younger and has no health issues has the potential to run 15 high to 16 low for 5km.....I really do believe that. Now it takes some sound training but it can be done.
I'll give a little background on myself and running just mileage, it might help the OP, everyone else wouldn't really need to follow along
I started running rather late, 22, and grew up playing hockey and did so in University, after that I had no sport to play at a high level and started to jog as part of my workout routine. I soon started enjoying running more then lifting weights and entered a local 5km. I ran 20:30 at 6'1" 195 lb's. I got beat by a ton of girls and was embarrassed but had some fun.
I decided to buy a garmin and started running every day. I lost all of my muscle mass and whatever fatty tissue I had and 5 months later I was running 16:30 for 5km, weighing 145lb's. I did no workouts but just ran volume because I loved it. I was running 85 miles/week consistently with a long run in there.
4 years later running is one of my passions, I'm not a true Elite (I have a full time job that's most important) but I'm decent, sponsored by saucony and running 14's for 5km on the track, 31 flat for 10km on the roads. The plan is to get under 30 for 10km next spring then start improving my strength and moving up to the half and eventually the marathon.
Miles are important but not everything. I run 130/week in my base phase with a tempo run and some long intervals like 2 mile repeats each week, during the racing season I'm much lower but doing 3 sessions a week.
For instance last week I did,
Q1 - 8X400m in 65 seconds off 60 seconds recovery then 8X1minute hills,
Q2 - 2X20 minutes at half Marathon pace (5:12/mile)
Q3 - 5X2km off 400m jog starting at 6:10 and working down to 5:50.
What I'm trying to point out is that if your new, volume alone can get you better, but a faster way to develop is a structured plan of attack with workouts tailored to your goal race.
Don't think you will be stuck at 18:30 forever, I'm sure you can eventually get to running 15-16minutes for 5km.