How can I get on the inside against taller opponents

[cosmic]

I was sparring an adult at the gym, probably 1.5 x my weight and whenever I try to get inside, It comes with punishment to me, for example, I look to jab to the body and then go to the head quick but I keep getting nailed when I come in, so frustrating, taller opponents are the problem for me

[Alx.]

use head movement and the jab to maneuver your way inside

speed is the key to this if you want demonstrations check frazier vs ali or mostly any tyson fight

[DIB42]

Watch Frazier and Tyson, but like them you also have to be able to offer up something once you get in range.... Also watch Frazier vs Foreman to see what happens when that approach goes horribly wrong.

[Telboy1990]

try a right hand to the body left hand over the top and it has to be done quickly

[Mohammedini]

Many people believe that stalking is the only way to get inside which is false...
Whats almost always much more effective is to make the taller guy chase you instead of you chasing him.
Using lateral movement etc and than dart in and out and continue to move away from your opponent.
When the taller person is walking forward he has a hard time maneuvering away from your attack.

Make him chase you instead of the other way around.
Kind of like Pacman vs Margarito.

[GhostFighter]

To get inside, dont go inside first!
Take step back and let him jab and come to you first. Simultaneously counter by stepping in slipping and unleash a fury short fast combo and get out again and repeat the process!
Its very tiring but the only effective way against taller ones.

[Sam Sexton]

What level was the guy at you were sparring with? Something to keep in mind is not only he has a longer reach but he may just be a better boxer then you at the moment.

I've been boxing about 6 year now and I'll spar with people who have been sparring a few month just going light with them, they get frustrated with my reach and say they find it hard sparring with me because I'm taller... nothing to do with the fact I've got about 5 years experience on top of them. It's the equivalent of sparring with Mike Tyson and saying you don't know how to fight a shorter guy.

Obviously there is ways to get fight against a guy with reach but you might not be doing as bad as you think.