I'm a runner and a running coach but I also like cycling as a great cross training option. I often ride with an action cam attached to my helmet just in case I come across something worth sharing.
It's very dangerous once I bat with friend that I will run on 20km for 2 min though I won the bat but once I was out of treadmill I had a severe chest pain when I visited doctor he examined and told me that I had mild heart attach and I survived it.
Highly dangerous once I had bet with my friend and ran in 20kmp for 4min as I got down of treadmill I had a severe pain in my chest when I visited doctor he made few test and told me that I had a mild heart attack.
25 km an hour converts to about 418m in 60 sec. for comparison the 400m world record is 43 sec. also as an average high school 400m runner, I run a 52 sec 400 on average. So this is really not that impressive. But however the challenge does seem fun.