By 
As a long-distance cyclist, I know I can ride a 150-mile ride and listen to 13 or 14 hours of lectures, which is about the space my iPod takes up. In fact, I have to listen to conferences that don’t have video because that eats up the amount of playback time the device can sustain. Remember that I need more than 13 full hours to finish my trip. Yeah, I have a little backup iPod but it only has music, which is good for finishing in the last 50 miles anyway, but that time you’re kind of crazy, especially if there’s a lot of hills to ride.
Running a 50K (31 mile) workout, conferences will have you clicking for hours without feeling all the pain, and that’s a good thing. Well, truth be told, it’s not all good. Let me explain some of the drawbacks of listening to lectures while doing endurance training or racing, I have three main complaints:
1. Introduction
2. Monotonous
3. Pay attention
4. No visual aids to look at
First the introduction this is where they introduce the guest speaker a lot of traveling lecture series and really those are often the best spend the first 5-10 minutes introducing the academic institution then the provost then the speaker and their or his long resume. Come on, just give me the information and an abbreviated biography of the speaker, that shouldn’t take more than a minute or more.
Second some speakers have strong accents and while you’re running it makes it hard to follow them, there’s nothing wrong with foreigners having the knowledge base, it’s just hard to understand them and you don’t know until you start. If he can’t hear, he has to stop and skip to another lesson, which breaks his rhythm.
Thirdly, sometimes the topics, for example, quantum physics is difficult to follow and pay attention to, remember that when you run on trails you have to be aware of the rocks in your path, the cadence and pay attention to the trail so that you don’t hit you, oh
Lastly, when you listen to lectures on a non-video iPod, often the speakers refer to power points, short videos and images, images that you can’t see and obviously can’t look at while biking at 22-25 mph, and certainly can’t look at anything. but the trail in a trail race – head to head!
It’s best to try to find speakers who speak in pictures and use few visual questions. Ted talks are good for this, as are authors giving speeches or book review talks. Please consider all this and think about it.