After finishing Ocarina of Time I focused on getting all exits from Super Mario World, so I turned on my SNES to start the challenge, after trying hard to reach all of them I finally made it!
When I defeated Bowser I had 93 so I went back to the first world to discover which ones I had missed. After finishing all stages over again I discovered I had overlooked one Secret Exit on Donut Secret 1 and two regular exits on Star World 3 and 4.
Next I'll try to beat Super Mario Bros 2 for the first time.