I used these on a Trek 770. They are a bid fiddly to install (lots of small bits), and are limited to 25mm tires, but do seem to work well. Lots of people around here who ride road bikes during the winter months use SKS Raceblades. Note the 23mm limitation. (Also a feature of the PDW fenders [MENTION=193944]Roger M[/MENTION] outed.) I notice on the REI site that they have a version which is supposed to work with 23-32mm tires:

SKS Race Blade XL Fender - REI.com

REI sells several other fenders for road bikes. You might want to check out their options to see if there's something else which might work.

Finally, I agree with [MENTION=392125]79pmooney[/MENTION] that if you can find something suitable, a full length front fender will be much kinder to your shoes, legs, and (most importantly) drive train. If you ride with a group, I would consider a short rear fender unkind to your riding buddies.