Congratulations on getting ready for the 15K and good luck at the race! It's a somewhat unusual race distance, but it's a good challenge if you've been doing 5K's and 10K's. I do mostly 5/10K's but have done three 15K's for that reason. I'm a little slower than you (1:23 for the 15K). Exactly how much water you need will depend on the race conditions (temperature etc.) and how well hydrated you are before the race. I did three water stops on each of the 15K's, typically around miles 4, 6 and 8. This was in cool, moderately humid race temperatures (Coronado, CA, on the coast) and a flat course. To calibrate, I normally don't stop for water on a 10K unless it's unusually hot.

Because the 15K is not a common race distance, you may find that the overall field is somewhat faster than your typical, say, 10K.

---

"...I've learned that you shouldn't compare yourself to the best others can do, but to the best you can do....I've learned that you can keep going long after you think you can't..."  --- author unknown

Blog: http://community.active.com/blogs/crl8686

Congratulations on a strong race and a good finish!

You can also look at it this way...a half marathon is only 3.8 more miles than a 15K...you're already within striking distance!

---

"...I've learned that you shouldn't compare yourself to the best others can do, but to the best you can do....I've learned that you can keep going long after you think you can't..."  --- author unknown

Blog: http://community.active.com/blogs/crl8686