Quote Originally Posted by Geonz
That works for 4 degrees (F) and 8 miles, and I haven't had to do more than that.
Kudos. I have roughly the same distance to go but usually give up at about 12-14 F. I find it gets really hard keeping my hands warm but still limber about then.

But otherwise I prefer temps between 18 and 25 F when things are dry (gee, I sure hope I got that conversion thing right so this makes sense) to temps around 32. I just *hate* wet feet, dark roads, slush all over the place, freezing on the cassette, packing in the brakes... yucko