The Philly Bike Expo is back this year see: 2021 Philly Bike Expo – Nov. 6 & 7
There is a car full of us planning to attend as posted by Jack H on Meetup: Philly Bike Expo | Meetup
Others who want to attend can plan on other car pool options.
I attended several years ago and found the Expo very intesting and made some good purchases of cycling clothing.
In addition to the Expo, seminars are available per: Seminar and Event Schedule – 2021 Philly Bike Expo