Training & Nutrition - Long Rides or Short Rides ???

This may be the most stupid question ever but I have found myself in a situation that I don't have time to do 30 mile rides 3 times per week. So I ride 15 miles every day.. My question is: Will I be able to burn as much fat with the short ride or the long ride?? How con I use the short rides to my advantage when it comes to being a better Cyclist???? This schedule will only last for 2 to 3 weeks!!!
Spanky

Do you commute to work? That will give you a chance to put on more miles.

Fat burning pretty much correlates to weekly mileage.

I am in a similar situation, with a more-than-fulltime office job and 2 toddlers. So, I commute to work everyday so I know that, no matter what, I'm going to get 40 miles a week. If I manage to sneak out of the house before everyone else gets up or maybe take a slight detour on the way home, I'm up to 75 or 80 miles. Then throw in a weekend ride, and I'm over a hundred. The point is that every mile counts and I try to look for every opportunity to grab another one.

Now, because I'm rarely able to put together a multi-hour ride, I ride most of my miles hard. I'll turn a simple commute into a time trial.

It's helped a bunch. My miles are down this year, but my fitness is only slightly down.

This may be the most stupid question ever but I have found myself in a situation that I don't have time to do 30 mile rides 3 times per week. So I ride 15 miles every day.. My question is: Will I be able to burn as much fat with the short ride or the long ride?? How con I use the short rides to my advantage when it comes to being a better Cyclist???? This schedule will only last for 2 to 3 weeks!!!
SpankyThere seems to be evidence that states a person will burn more calories exercising for 2 hours 3 times per week than they will exercising at the same intensity for 1 hour 6 days per week.

If you have time restrictions, ride when you can.