How to clean a bike after muddy/sandy cyclocross race (or mountain bike ride) What do I need to be concerned with when cleaning my bike after a typical muddy and sandy cyclocross race? (Probably also applicable to mountain biking.)
Particularly, what can be done (in the field) between races to keep the bike clean and ready to ride again? Also, what am I missing due to the quick cleaning which I should take care of at home later?
I know we are supposed to avoid using a high pressure washer around the hubs / bottom bracket to avoid pushing out the grease.
I'm concerned with

Grit in the chain
Grit in the brake cables / shift cables
Grit in the brakes and on the rims (typically canti-brakes)
Mud caked in and around every part of the drivetrain / hubs / derailleur
Re-lubing the drivetrain (and other parts) for another race
What kind of 'field kit' items I will need for this

Other Related Questions on bike cleaning:

How to wash a bike properly?
How can I clean sand off my bike chain?
What to use to clean your chain (and cogs)?
You should definitely be careful with it, but at many races we employ the use of a pressure washer to do broad stroke cleaning like getting mud, grass, etc off the bike and tires. You need to be careful and use it from a little distance and obviously not get up close on the BB, hubs, etc. but it does a good job of initially cleaning or cleaning between races.

After the race you should do more appropriate maintenance on the bike with degreaser and proper lubes.