Is running 4 miles/ day 6 days a week enough to run a comfortable Half Marathon ?

You might make it just fine, you might injure yourself, kind of depends on you. I'd recommend skipping this one and at least working on weekly mileage or adding a long run. That's over 3 times your daily distance and IMO it doesn't make sense to risk injury just to see if you can finish the race. You haven't been a runner for very long, your body is still getting used to the concept at all...why the rush?

Try at least to increase mileage to 5 miles/day + 8 miles long run, before thinking of doing a Half.

4 miles/day is really not a lot, and you're opening yourself to injury.

No, since you mentioned the word comfortable.

Do proper endurance training and sign up for a half marathon in 6 month or so.

Starno wrote:

Try at least to increase mileage to 5 miles/day + 8 miles long run, before thinking of doing a Half.

4 miles/day is really not a lot, and you're opening yourself to injury.

+1. I think it would go a lot smoother with at least one longer run a week of 8 miles or so.

Your only goal is to finish running 13 miles, so you would be fine. You’re already smart enough to know you can’t push the pace.

I would think that you could comfortably finish the half marathon at 9:15-9:30 pace. If you rest the week beforehand, you could probably run it at your normal 8:30-8:45 pace, but you definitely wouldn’t be comfortably toward the end.

People are more durable than you think.

Obviously this isn’t a good training plan, but you could certainly finish without trouble.

Best to run ~75% of the target distance to make sure you can sustain something in that ballpark, so if you’ve never done a 9-10 mile run, there’s a good chance you might burn out in a 13 miler.

I would say one long run a week get it up to 10 miles or so.

try running 10 miles the week before the race. If it goes well then join the race.

My wife runs about twice per week at a distance of 4 miles a 9 minute pace. She does two or three 1/2 marathons every year at 9:30 pace and recovers just fine. She does no other races.

Most half marathons offer shorter race options. Sign up for the 5K. 20-25 miles a week is enough for a beginner to have a good experience with a 5K. Trying to run a race that's over half your weekly mileage will probably not be fun.

Jogging a 1/2 marathon is more fun that racing a 5k.

You can easily do it. Just take it slow and you'll be fine. It'll get tough at the end but you'll be okay.

Badder than bad wrote:

My wife runs about twice per week at a distance of 4 miles a 9 minute pace. She does two or three 1/2 marathons every year at 9:30 pace and recovers just fine. She does no other races.

My GF is similar. She has also run marathons at high 10's pace.

It will be for sure an experience. :)

Do not start too fast.

It's really hard to know. A lot of it depends on your body. Because you've never touched anything close to that distance before, you may want to go out extremely conservatively (10:00ish pace perhaps), and start gradually speeding up if you're still feeling good around mile 9 or 10.

Your body might be able to handle the distance just fine, but it can be a really miserable experience if your body doesn't respond well (fatigue, leg cramping, possible injury (strains, stress fractures, tendon overuse issues), GI distress, watching hoards of people pass you, etc.).

Preferably, you'd start with a shorter race distance, like a 5k or 10k, and work your way up to the half.