If you're looking for a one day get away with your family or friends. There are a good number a short trails in Georgia that offer good technical riding opportunities.
Livesy Trail in Decatur is located around the lake. The trail itself is only 3 miles long and loops around. This trail is fantastic for beginners because there are no challenges over obstacles.
The Mansell Trails in Alpharetta are just over 6 miles of one-way networked trails. There are a lot of steep down hills and some good climbing that experienced riders will enjoy. These trails get a lot of traffic and are very worn down and eroded so traction may be an issue in various places. Don't ride these areas if there has been a lot of rain, your chances of getting stuck in the mud due to no traction is quite high.
If you're riding in an area that gets a lot of traffic try to follow the standards put forth by the organization Treadlightly. Try to leave every trail better than when you found it. If you see trash on a trail stop and pick it up. By doing your part to keep the trails maintained, you will not only make the trails even better for the next rider, but you set a good example of what a responsible rider should be.
Additionally, even though these are very short rides, always wear your helmet, goggles and gloves at the very least. For gravel and densely forested trails, long pants and long sleeves will save your arms and legs from scratching branches and the sting of gravel getting kicked up by another rider's tires. A full line of safety gear that will protect you from head to toe when you ride is available at Raceway and shipping is always free!