As of now I've decided to wear the Yaktrax for the race, but still undecided about the tights as the forecast for tomorrow morning keeps changing -- earlier it was 22 degrees, now it's 27. After trying out the Yaktrax today, it seems the added 3 oz is not that noticeable, especially when compared to a wet sock & shoe. With the slushy snow today, there seemed to be just a little less slippage with each step. What it will be like tomorrow is unknown – the snow will freeze hard at 22 degrees, but if it just reaches 27 at 7 in the morning, it seems unlikely the slushy snow will freeze at all. Looking forward to the race regardless.