Keep forgetting to eat on long bike rides

have a schedule.  I would ingest something every 10 minutes while IM training.  On short rides, that might just be nuun or sports drink, but on long rides I would alternate between drink at 10, 30 and 50 and gu chomps at 20, 40, and 60.  I know some people who set up alarms on their garmins for eating, but I never found that necessary.

I think you really have to be disciplined.  if this is happening now, it will happen on race day and your day could be ruined.

I use a cheap Timex watch to beep on certain intervals either every 15 or 20 minutes. I have it attached to my aerobars or basebar and leave it there.

One tip I learned is if you miss an interval like riding down long hill or climbing take in your calories then reset the timer so you don't eat to much together.

910 has a nutrition timer on both bike and run settings (each independent timers). 

My longest ride has been 4 hours.. But my nutrition needs always vary. I bring some along, sometimes I need all of it, sometimes none. 

I think overall one has to tune into their body. Were I going to use an alarm it wouldn't be to automatically eat something, but check myself to see how I feel. If I'm hungry I eat. If not.. I don't. 

This.

Agreed.  I never feel "hungry" on the bike, eating when hungry would be disasterous in an IM.  Might work in a shorter race, but not when you are going for 8+ hours. 

Exactly. I make a 3 hr bottle which means that I put 6 scoops of Infinit in the bottle, then fill with water. This bottle should be treated as nutrition only (meaning you get hydration another way). I have the bottle marked, with permanent marker, in 3 equal portions. The goal then is to finish each portion every hour. I then set my Garmin to alarm every 20 min and then drink ~1/3 of each section at a time. Chase with water. Super simple and easy to keep track of.

You can make your own for about 5% of the cost of Infinit using bulk maltodextrin, salt tabs, and flavoring if you want.