I'm not a qualified coach but you could easily train to get more endurance though. i'm a skinny racing snake that can't sprint but can ride at a decent pace for an hour or 2 but find long distances a problem as i find it hard to eat while riding and will bonk after a while. if i actually bothered to do longer rides and more intervals/short efforts i would improve these areas. still wouldn't be a sprinter or 100miles a day rider but specific training would see an improvement.
I'm not a qualified coach but you could easily train to get more endurance though. i'm a skinny racing snake that can't sprint but can ride at a decent pace for an hour or 2 but find long distances a problem as i find it hard to eat while riding and will bonk after a while. if i actually bothered to do longer rides and more intervals/short efforts i would improve these areas. still wouldn't be a sprinter or 100miles a day rider but specific training would see an improvement.