Hi cakses, I swim and run too and I've found that they compliment each other but the results from swimming don't necessarily show up right away in running and vice versa. I know when I started running I was surprised at how sore and tired my legs and really, my whole body got, after a pretty short run, though my cardio fitness from swimming meant that I wasn't gasping for breath. I just couldn't make my legs go any further. Took time for my body to adjust to running so that I could take advantage of my swimming fitness.
I can also tell in swimming now how much stronger my legs and lower body are - I get a lot more out of my kick esp. in butterfly and backstroke. I'm even thinking of trying a Masters meet now (still just thinking...we'll see!)
I think if you give it a chance you'll see a breakthrough. I agree with maybe slowing down and seeing if that will extend your distance. That tactic did help me a lot. My running kind of hovered around the same level for a while and then suddenly got better. I think I just had to adjust to the new demands? Keep going, you'll get there!
Race update - I did the women only 5K xcountry this weekend and it was a lot of fun. Beautiful cool day, sunny, the course was quite hilly with a little creek crossing and some steep rocky ground to cover plus a long hill into the finish, why, oh why??? Very fast group of ladies on this event and mostly in their 40's and 50's, it was really great to see. Although the girl who was 3rd over all was 10 years old and ran like the wind. I did 25:18 and was more than thrilled with that, as previous cross country runs have been more like 28 to 30 minutes and I was hoping to get into the 27's. I really think the other women pulled me along.
I really enjoy this format, more challenging than being on the road, but not as dangerous to the near-sighted balance-deprived as a trail run. Looking forward to next summer and finding more of them around here.


