To run or not to run Nike+ Human Race on 24rth October?

The Nike 10K Human race is not an ideal one for long distance runners training for the Bangalore ultra on November 15th. Plus the race is on a Saturday afternoon and at Clark’s Exotica located quite far from the city. Therefore, it is not surprising that many RFL runners have decided to give it a miss. Nevertheless I decided to go ahead and register for it mainly because the NGO partner for the race is Dream A Dream and also a few others from my apartment community were interested in participating. The thinking was if I did a 10K in around 48 minutes , the same time as I took in Sunfeast 10K 2009, then it could serve as a good tempo run. Also I had planned my long runs in such a way that I could take it easy the weekend of 24th/25th October . The intent was to do a 4 hour/35K+ run on October 18th with a bunch of BHUKMP runners after gorging on Diwali sweets and savories on 17th. And follow this up with a 30K run on 31st October. Unfortunately, due to a massive stomach upset I could neither hog nor do my long run this weekend. For the 2nd time in less than 8 weeks I fell sick(does exercise increase or decrease immunity – a topic that needs to be researched further!). Due to this I am now in two minds about participating in this race. I am thinking maybe I will skip the 10K race and get in the 4hour/35K+ run instead. Will need to decide latest by Thursday. The irony is that I felt well enough by Sunday night to do a solo 21K/2:01 run this morning!.