It's very large
There are 2 open air malls, Kings and Queens, they both have bike and scooter rentals. Scooters are very popular. The bike shop at Queens has a Tuesday morning resort ride. Rentals are not cheap, but you can rent high end bikes, these are not beach cruisers. You will see a lot of hard core bikers on the highway to Kona too, it's the ironman training area.
There is a free shuttle that runs every 30 min from Kingsland to Queens Marketplace (stops at all areas), you can ride the shuttle and its a 15 min stroll to the A-Bay beach behind Queens.
My wife and I are walkers in the early am and we have walked the beach route to Queens then cut through the back way to KL, it was about 4-5 miles. We take the shuttle or rental car to haul beach stuff.
When you enter WKL the first right is a short cut to KL through the golf course, straight on passes the shops then all the resorts, KL is the very last one.