First you need to be concerned if you are running anything other than 1080i or 720p. Second, we've heard of many counterfeit HDMI cables on eBay that are labeled as High Speed and aren't or just don't work at all. Buyer beware and make sure you are getting what you think you are.
High Speed passive HDMI cables max out at barely over 25 feet. If you need to go greater than 25 feet and you want a High Speed cable then your choices are Redmere (I think that maxes out at 65' right now) or convert to cat 6 for the long run.
If you want to try a Standard Speed cable, then you should get the thickest guage cable you can find for 100 feet. Even then I doubt you'll be able to get 1080p/60 to run that far but maybe depending on the cable quality. However, to increase your chances make sure Deep Color is disabled on all your devices (it provides no picture improvement anyway). Also make sure your thick cable is not bent. But, just remember there is no guarantee that a standard speed cable will work but it may.
Other than fiber optic, those really are your choices. Unless you convert to Cat 6 (HDBaseT is a possibility) you are outside of the HDMI specification at 100 feet with 1080p/60.