The first 12 miles were flat along the shore of the river. I felt really comfortable averaging about 22 mph. There were few athletes on the bike course at this point, so no worries about drafting or congestion. I immediately started my hydration and nutrition plan. Each hour I needed to drink at least 50 ounces of sport drink or water (i.e., 2 bottles), and at least 50 but no more than 80 grams of carbohydrate. Too few carbs = low blood sugar. Too many carbs = high blood sugar. I took a bottle of water and/or Gatorade Endurance (approx. 40 grams carbs) from each aid station every 10 miles. The first 3 hours of the bike before the Special Needs bags at mile 68, I planned to eat 2
Clif Bars (each 240 calories, 42 grams carbs) and 2 sport gels (each 100 calories, approximately 20 grams carb). With the calories and carbs from the sport drink, that would give me about 900 calories and 250 grams
of carbohydrate in the first 3 hours.
The hills started around mile 12 and I still felt good, but did not have the fire power in my legs I usually do. Because cycling is my strength, I usually pass many athletes (the faster swimmers) in the first 20 – 30 miles of bike, but today the road was very open because many speedy swimmers started after me in the time trial swim start. A few athletes passed me early in the bike, but I know from experience that many (most)
triathletes go way too hard in the first 50 miles of the Ironman and pay for it later. I was patient and would not let these guys tempt me, so I let them go. It’s a long race.
I have had trouble with really high blood sugar (250+ mg/dl, normal/ideal is 100) in the first half of the bike, and have worked really hard with my insulin and nutrition strategy to prevent that. But some of that is caused by adrenaline ending the swim and transitioning to the bike. Adrenaline causes a blood sugar spike (the body’s natural “fight or flight” reaction), but it’s too risky to bolus (inject) insulin anticipating it. If I’m wrong and don’t get the adrenaline spike, the insulin will cause my blood sugar to crash (hypoglycemia). In previous Ironmans I have not been able to detect the high blood sugar until I check my blood sugar at the 56 mile midpoint about 2.5 hours into the bike. By that point it is too late because my kidneys have been flushing my system of vital hydration attempting to flush the glucose out of my blood for the last 2 hours. But at Louisville I was happy to catch it going up early, 45 minutes into the bike my BG hit 200. I figured it was still rising so while riding I immediately gave myself a quick small bolus of insulin (2 units) from my Omnipod insulin pump, and kept motoring. But I still needed to eat a Clif Bar (still have to fuel the body to race) and could not afford to dump those carbs on top of a 200+ rising blood sugar, so I gave myself a little more insulin (3 units, only about 3/4 what I normally would for a Clif Bar when not racing). But 45 minutes later (about 30 miles and 1½ hours into the bike) my BG had still skyrocketed to 340!! 3½ times what is normal!
Yikes! “Patience!” I told myself. I knew I had bolused insulin 45 minutes ago and it would soon be coming down. Chasing high and low blood sugar is a dangerous and difficult experiment. You must be patient and give the insulin, or carbs, time to be absorbed and work. Overreact/overcompensate and you’re doomed. You can’t get the insulin or carbs out of your body once they’re in. Doing this chemistry calculation while cycling 112 miles at 21-22 mph in the Ironman triathlon is, uh . . . challenging.
The bike course was a mix of rolling Kentucky hills, a bit hillier than I had expected, but similar to the roads I train on in the foothills of South Carolina and North Carolina. The short little hills did make it difficult to settle into a rhythm, constantly shifting gears. At mile 38 we rolled through the little town of LaGrange, Ky and thousands of people lined the course screaming wildly as we raced by. Cheering crowds are always nice when the rest of the 112 miles is just you, your bike and talking to yourself . . .“this kind of hurts. . . should I drink now?. . . I hope I don’t get a flat . . . wonder if can I catch that guy?”
By the Special Needs bags at mile 66, about 3½ hours into the ride, my blood sugar was a perfect 125. That’s a good number, but in 2 hours it had dropped from 340 to 125, even though I’d consumed about 100 grams of carbohydrate in that time. I could only hope it would not keep dropping, so I immediately stuffed a Clif Bar and about 40 grams of carbohydrate sport drink in my mouth to stop the slide. I also felt like I was properly hydrated, having drank consistently (and stopped twice to urinate) in the first 70 miles. I was in the top 10% of the field and felt pretty good about my position.
But around mile 80, I began to notice a loss in my power and speed. My legs did not have the same zip and I was struggling a bit more on the rolling hills. It’s normal to feel a bit tired after 80 miles, but when I began to get passed by a few athletes, I knew that something was going wrong. Around mile 85, approximately 4 hours and 30 minutes into the bike, nausea began to creep in. I checked my blood sugar and . . . 65 mg/dl. OH NO! I tried to stuff more carbs into my mouth, but my queasy stomach could not take much more sweet Gatorade, sport gel or another Clif Bar. I tried to drink several swallows of Gatorade while riding, only to choke and vomit it right back up, all while pedaling at 21 mph.
At this point, I stopped again and suspended all delivery of insulin (i.e., stopped the constant “basal” flow of insulin) from my pump. I could not tolerate more insulin going into my body when I could not eat to correct the already low blood sugar. (In fact, the rest of the race I never turned the pump back on and got no more insulin after this point.)
Miles 85 to 112 became a 1½ hour death roll, my blood sugar never getting above 65, out of breath, no strength, and nauseous. My average speed for those 27 miles dropped to 19.3 mph, at least 2 -3 mph below the average for the first 85 miles, and I was passed by what felt like 100 athletes. I stopped one more time (my 5th time!) to check blood sugar, feeling like I was going to vomit. It took me about 1 hour 30 minutes to cover those mostly descending and flat 27 miles. My nausea was so intense I wondered if I would even be able to start, much less finish, the marathon. I coasted into transition with a bike time of just over 5 hour 58 minutes, well beyond my target of 5:15. (Stopping 5 times also did not help.)
TRANSITION 2As always, there are thousands of people cheering at us as the athletes enter the bike to run transition, but I could not run. I slowly walked into transition, grabbed my transition bag and sat (collapsed) in a chair in the change tent. It must have been 115 degrees in there, sweaty athletes rushing in from the bike and out for the run. Normally that is a frenetic 2 minute drill for me to check my blood sugar, throw on my running shoes and head out for the marathon. But not today. My One Touch Ultra Mini meter told me my blood sugar was 62 mg/dl. I was weak, hypoglycemic for the last 1½ hours, dehydrated and felt like I could throw up at any moment. I set a new record for slow transitions, sitting in that tent for 25 minutes, sipping my carbohydrate drink, trying to keep it down, trying to get my blood sugar up. No way would I be able to raise it after starting the marathon. 100 athletes must have entered and started the marathon while I could do nothing but watch them come and go.
I remember seeing the cool comfort of the medical tent outside through the opening, with several athletes being attended to, their race over. I did not want to stop.
After 25 agonizing minutes, my blood sugar had risen to about 120, and I began to feel slightly better. I was a bit surprised, but figured I would see how far I could run. You never know what happens. I started the marathon.
MARATHONThe run course was hot. HOT! 95 degrees and steaming humid at 2:30 pm. My first mile was a slow trot at about an 8 minute pace. For about 5 miles I kept dumping cups of ice under my hat, and cold wet sponges on my shoulders. But my strength and blood sugar kept dropping, until I slowed to a walk. I walked from about 3 miles, nauseous, dehydrated and somewhat delirious. Finally at mile 8 at the furthest point out on the 2 loop run course, I asked the medics for a blood sugar meter. My blood sugar was 70. I was sick and could not run. They recommended that I not continue. I wanted to try, but I could barely walk and definitely could not run. At about 4:30 pm, 8½ hours into the race, I had to withdraw. I climbed aboard the ambulance for the ride back to medical tent at the finish area, receiving 1 IV bag of fluid, until I was strong enough to stand.
POST RACE