Are you eating a lot of nuts? Cut it.
Are you eating too many calories? Cut some.
Are you eating too little protein and too much fat, especially: avocado, olive oil, bacon, nuts? Cut those things and up red meat.
I also would suggest doing more than just bike rides. Strength training would help you a long ways.
It is hard to know what is wrong when you didn't give a typical day of food and your stats, but those given above seem to be the main trip ups.
Sent from my iPhone using Tapatalk - now Free