fit but not running well

my concept2 rowing times have improved but my running hasn't. my 2000 meter time is now down to 6:52.6. there's a bit of competition going on with another guy from the gym who does similar times over 2000. he's done 6:54 but i reckon i will go much quicker given time and training. my mind though is still in a bit of a quandry about which direction to go in. doing both sure is hard work though as it means i'm doing 4 hard sessions a week plus a long run of about 13 miles on a saturday evening, meaning that i am consuming a lot of food and don't have a lot of energy for much else at the minute. i will be doing my first race on sunday when i enter the portishead 10k (or 5k)multi terrain run on sunday morning. knowing the course as well as i do there's no chance of any pbs as the terrain is just too hilly, so it will be all about position. obviously i will keep you all informed on here as to how i get on. watch this space...