Judy -- I'm not sure if this is what you are looking for, and it may be TMI, but let me know and I can always delete it!

Our philosophy, as may be apparent from the list, is that anything vital went in carry-ons (all running gear, etc.). Everything else was in checked luggage. It gaves us peace of mind to know we couldn't lose the running gear we'd trained in.
WDW HALF MARATHON WEEKEND PACKING LIST
Howard carry-on
Howards sunglasses case
Howards Running Gear:
Garmin & charger
adidas black/green shirt
adidas black/green tights
WISH shirt
socks
running shoes
ipod shuffle & headphones
headband
waistpack & new water bottle
hand towel
Cams Running Gear:
Garmin
bike shorts
WISH shirt (x2 cotton & dri-fit)
green stripe pants
black leggings
oversized black tee shirt
2 pairs socks
white sport bra
black sport bra
black ponytail holder
running sneakers
fanny pack w/water bottle
powerbars (2); honey packs (8)
kleenex
ipod shuffle & headphones
lip balm
ipod shuffle charger
powerade (1 bottle)
Cam carry-on
Documents:
PHL to MCO boarding passes
MCO to PHL confirmation
BCV Confirmation
Annual Passes (x2)
DVC membership card
Disney Rewards Card
Disney Dining Experience Card
2 Marathon Packets (with waivers)
dining reservation confirmation numbers
camera & battery charger
cell phone & cell phone charger
ipod & ipod speakers
sunglasses & extra sunglasses
Cams jewelry
books
Regular suitcase
Howard:
2 shorts
4 tee shirts
jeans
4 socks
sneakers to walk around parks
club outfit & dancing shoes
4 sets underwear
bathing suit & tee shirt & sandals
sweatshirt
throwaway warm clothes for 1/2"
Cam:
2 shorts
4 tee shirts & 2 long sleeve tops
jeans
4 socks
sneakers to walk around parks
club outfit & sandals
bathing suit & coverup & sandals
4 sets underwear
sweatshirt
throwaway warm clothes for ½"
sweatpants
sweatshirt
gloves, hat, scarf
Other:
toothbrushes, toothpaste, dental floss
shampoo, conditioner
razors, shave gel
shower gel
powder, perfume, cologne
makeup bag
hair gel
brush
deodorant
q-tips
coffee, filters, sweet n low
almonds
fruit & nut bars
granola bars
ponchos (x2)
sunscreen (x2)
crystal light packets
2 empty water bottles
Howards swim goggles
ziplock bag for camera
baseball caps
old blanket for before the ½
plastic trash bag for before the ½
Reminder list for Friday night:
put chip on sneaker
charge camera battery
charge Garmin
charge cell phone
charge shuffle
mix ½ powerade ½ water & refrigerate
pin race number to race shirt
Reminder list for race morning:
Shower, deodorant, make-up
Change to small earrings
Hair in ponytail holder
running undergarments
green stripe pants
WISH dri-fit shirt
Garmin on left wrist
bottle of ½ water, ½ orange powerade
add layers of clothes sweatpants, sweatshirt, gloves
put good sunglasses up on head
take 2 aleve
Fanny pack checklist:
8 honey packets
3 power bars
camera
cellphone
shuffle & headphones
lip balm
powerade/water bottle
KTTW card
kleenex
Take to bus
fanny pack
blanket
check-in bag
breakfast
small sunscreen
plastic garbage bag
hat, gloves, scarf