MaryAnn wrote: I think I have plantar fasciitis. I wake up every morning with a sore heel. This has been happening for awhile after every run, but it had been clearing up quickly. This time, it's been sore since the DIY half marathon, over a week now

does anyone else suffer from this? Any advice?
FWIW, here's a consolidation of information from three different recent running books and one trigger point therapy book:
SYMPTOMS:
Pain in the bottom of the foot especially at the start of a run.
Pain immediately after getting out of bed in the morning.
"Like a sharp rock in your shoe."
CAUSES:
Heel landing: "...nearly all PF sufferers are heel strikers."
Wearing high heels (shortens both the calf and Achilles).
Running down hill.
Running in sand.
Too long a stride.
Weak/tight calf muscles.
RECOVERY:
Ice it.
While sitting, several times a day roll a tennis ball back and forth under your bare foot to stretch the fascia.
"Walk barefoot on a coarse gravel surface for at least 10 minutes a day. It hurts [intensely] but gets rid of PF faster than anything else."
"Get a foot massage, the deeper the better."
Night splints (which prevent pointing your toes down towards the foot of the bed while sleeping.)
"The best way to stretch this area is to put your toes and the ball of your foot against the top of the vertical edge of a step with your heel on the floor and slowly lean forward, keeping your leg straight, until you feel the stretch at the top of your calf. Repeat this stretch with your knee bent, feeling the stretch farther down the leg near the Achilles tendon. Hold each stretch for 15-20 seconds and repeat several times in each position. Ideally you'll do this daily, before and after exercise."
Massage muscle trigger points. These are exquisitely tender places (you'll know you found it because they hurt when pressed with a thumb or knuckle, for example) - in the center calf muscle just above the top of the Achilles where it meets the calf muscles. Massage firmly (with the knee of your opposite leg is one method, or rolled with a rolling pin, or pressing against a hard ball) several times a day until they release (stop hurting).
Over the counter hard arch supports, sometimes orthotics.
PREVENTION:
Strengthen calves.
Shorten stride.
Don't heel land. Land mid-foot or forefoot instead, ensuring that your heel at least momentarily “kisses the ground” to relieve the strain on calf muscles and Achilles.
Lose weight.
Wear flats.
HTH