Don't be wishy-washy.
Set a goal, make plans like it (15:50) is a certainty.
Find the time and find the money to make 2009 a reality.
You are smarter and stronger than you were when you ran in college or did your 15:50, three plus years ago.
Contact the Race Directors and tell them you expect to be in 15:45-16:00 5km shape next Spring and can they make room for you in their race?
Carlsbad 5km April 5th 2009
Mt. SAC April 17th 2009
Payton Jordan Cardinal Invitational May 3rd 2009
Adidas Track Classic from Carson, CA May 17th 2009
National Championships, Eugene, CA June 27th 2009
Try 3 X 1 mile once this month at a 6:00 minute pace.
Begin with rest interval of 2:00 minutes. If that seems too comfortable you can tighten it up and only rest 90 seconds.
Do it again in September.
Come October, try 3 X 1 mile at 5:45 minutes per mile pace.
If 90 seconds seems like plenty of recovery, be ready to run again in 60 seconds.
Repeat the 3 X 1 in 5:45 in November. Only do this track workout once a month.
December 3 X 1 mile at 5:30 minute pace with two minute rest interval.
January 2009 3 X 1 mile at 5:30 minute pace with 90 second rest interval.
February 3 X 1 mile at 5:20 minute pace with two minute rest interval.
March 3 X 1 mile at 5:20 minute pace. 90 seconds rest.
April road race or track race.
May 3 X 1 mile at 5:10 minute pace. 90 seconds rest.
A 15:45 to 15:50 5km will require a 5:04-5:05 per mile pace, 76 seconds per quarter.
The track workouts above are suggested to get you turning those legs over fast again, give you the confidence that you are strong enough and capable of maintaining pace in a 5km race.
Others will tell you to go out and hammer on the track like 10 X 400m in 60 seconds as often as possible. Not necessary and such a workout may be detrimental to your staying sane and keeping your body healthy.