Welcome to Houston/Kingwood. I live in Kingwood and ride from there normally. For now I am off the bike recovering from melanoma surgery. The Bike Barn group is active. Their Saturday ride usually goes east over Lake Houston south to Crosby to Summerwood and back to the store. Sometimes they reverse that. You can check my Strava rides for routes that I take to the north of Kingwood as well as to the south and east. https://www.strava.com/athletes/201200
If you want a different ride the Spring Creek Greenway starts at the San Jacinto River at US59 and goes to the west about 18 miles and 18 miles back.
Other cyclists ride from Kingwood and you can find them on Strava too.