The plan for the bike category

Though this is a “Bike” category, it would include an important trekking part.
The plan for the bike category is like this:
You start with a bike, cycle to a CP (control point) with special tasks, leave the bikes there, continue to a smaller trekking circle.
Then again on bikes, you go to the next CP with special tasks, and leave again the bikes there and start the larger trekking circle. And after return, continue on bikes. There might be other task along the biking and the trekking parts.