im doing cda but was hoping on sneaking in a early half … how many weeks would i need to have between the two races …obviously my ironman is my focus so i want to be sure that im recovered and ready for it!
Three worked for me in early season, and I had a great IM
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I would say 3-4 is probably as close as you would want to go and only if you are treating the race as a solid training day. However, Devashish Paul is testing a new tapering theory with a fast, hard 1/2 in Peterborough last Sunday in nasty heat just 2 weeks before IMLP so we can check out his results to see how this works 
You see this debated a lot…and I am still not sure what the answer is…
I was thinking of a half about 8 weeks out - but thats about when you should be hitting your biggest volume and to rest for a few days then recover would take at least a week total - more like 9-10 days.
Now I am wondering if 4 weeks out is best - rest for a few days prior - race hard. Then take most of the next week off/easy - then you do your 3 week taper…what do you all think?
Dave