Not recommended for racing bikes. At least a cyclocrosser, an MTB even better. Mainly because of the loose gravel stones, where you easily lose grip. Tip: choose the edge with some sand and grass as much as possible, for better grip.
If you want to do this with simple road bike tires, then good luck. The loose gravel is far too difficult for delicate narrow road bike tires. An MTB is more ideal, or a cyclocrosser or gravel bike. You can do the climb from either side.