Tour Packing Checklist - Page 1
Toiletries (Target and Walmart stock travel sizes)
Toothbrush
Toothpaste
Floss
Mouthwash
Antiperspirant
Shampoo
Suntan Lotion
SPF Lip Balm
Hand Lotion / Chamois Cream
Cotton Swabs
Cortaid Ointment
Ear Plugs
Bug Spray
Bandages
Razor and Shaving Cream
Makeup
Feminine Hygiene
Tissues (emergency toilet paper)
Laundry detergent
Drugs and pills
Advil/Aspirin/NSAID
Benadryl
Pepto-Bismol
Caffeine
Vitamins
Wallet
Driver's License
Insurance Card
Emergency Telephone Numbers
Credit Card (or 2)
Cash
  
Cycling Clothing (wearing at the start)
Jersey
Cycling Shorts
Socks
Shoes
Helmet
Sunglasses
Gloves, short fingered
Headsweat or Headband
Cycling Weather Gear
Arm Warmers
Leg Warmers or Tights
Underlayer (sleeveless and/or long sleeves)
Rain Jacket
Glove Liners
Long Fingered Gloves
Toe Covers and/or Shoe Covers
Helmet Cover
Balaclava
Rain Pants
Extra Pair of Shorts and/or Jersey
Street Clothes
Shorts
Underwear - 2 Pair quick dry
Short Sleeve Shirt
Long Sleeve Shirt
Sleeping Shirt
Pants (convertible)
Socks
Walking Shoes or Sandals

Tour Packing Checklist - Page 2
Accessories
Waterbottles
Cell Phone
Cell Phone Charger
Headlight & Taillight with Batteries and/or Charger
Cue Sheets
Maps
Compass
Cell Phone Numbers (for all in group)
Emergency Contact Numbers (for all in group)
Hotel Addresses, Telephone and Confirmation Numbers
Pepper Spray
Lock
Camera
Pen and Paper
Clothespins (2)
Flashlight (or use Bike Light)
Travel Alarm or Watch
Paperback Book
Contacts (If you wear them)
Contacts (wearing)
Contacts (spares)
Glasses, in case
Contact case
Multipurpose solution
Eyedrops
  
Tools
Patch Kit (check glue)
2 Spare Tubes
Spare Tire
Spare Spokes With Nipples (2 of each length)
Cassette Tool or Hypercracker
Bike Specific Multi-Tool (with Chain Tool)
Tire Levers
Spoke Wrench (be sure it works on both wheels)
Pump
CO2 Inflator and Cartridges
Spare Cleats
Cable Ties
Duct Tape
Rubber Bands
Heavy Paper Towels or Shop Rags
Chain Lube
Spare Chain Link
Spare Derailleur Cable
Extra-Small Philips and Straight Screwdrivers
Emergency Cash
Specialty Tool (unique tool for your bike)

Tour Packing Checklist - Page 3 - Notes
Obviously you can't take all of these, simplify and double up to minimize weight and bulk.
Pack all clothing in waterproof bags, even if the trunk bag or pannier manufacturer claims they're waterproof.
Compress clothing inside bags before sealing to reduce bulk (sit on them :o).
A waterproof lightweight wallet is handy.
Discover Card is not accepted some places.
Lightweight nylon clothing packs smaller and lighter, and dries faster.
An extra pair of socks is always nice, especially if it rains.
Wool works well for touring.
A couple of extra plastic bags can come in handy.
Check tires for wear, cuts and sidewall bubbles.
Strong true wheels are important (especially if you're heavy)
A 25mm+ tire on the rear is more reliable, and a smoother ride (again, especially if you're heavy)
Don't wait to work on your bike the night before!