Hey Shawn, There are a good number of places to swim depending on what you are looking for.
Sounds like you want a pool versus the ocean (can't imagine you'll have any problems finding the ocean...). If you want a coached masters workout the University of Hawaii Masters program is probably your best bet and only a few miles from Waikiki. We are ususally in a 50m pool but sometimes get kicked into the diving well if the water polo team is practicing. Think it'll be long course when you're here. Workouts are at 5:30am, 6:00pm, and 7:15pm M-TH, 5:30am & 6:00pm on Fri. Usually around 4,000 yd wokouts. The 6:00pm is pretty crowded butr that's my favorite tiem to go.
You can also check out the Palolo Pool which is a nice 50m public pool about 2 miles farther than UH. IT's usually rec swim and they don't have lane lines or a heater. Yes it's Hawaii but sometimes it can be damn cold. A local tri-coach, Raul Boca (
www.bocahawaii.com) puts on a free masters swim (25m) on M & W 6:45pm. Shorter workouts rarely over 2500 but he's a great guy and it's fun. If not the pool is open most nights, if you want to check out the swim times PM me and I'll get you a phone #.
For the ocean, Ala Moana beach has a great 2,000m protected course but the water quality isn't that great. Nice though, no waves and it's parralles to shore along the beach. 1,000 down, 2,000 down and back.
Kaimana or San Succi beach as it's often called is down at Kapiolani Park on the Diamond Head end of Waikiki. Head along the road closest to the ocean towards Diamond Head. The Park will be on your left, beach on your right. You'll see an aquarium on your right about a quarter mile into the park, right after the Aquarium is a small beach where they start the Honolulu Rough Water 2.4mile (original Ironman) swim and where the Honolulu Tri was last year. Great swimming although most of us just swim a couple of hundred yards out in the channel to a windsock that serves as a channel marker. Out and back 3 or 4 times is a great workout and you'll find lots of swimmers and tri-guys out there. Right before the Aquarium is Queen's beach where this year's Honolulu Tri will be. I'd rather swim at Kaimana but Queens is very protected and about 400m long.
Just did the Lavaman in Kona and got to race against the Canadian natl team and a bunch of other pros. Damn those guys can run! I got a couple of them but I need to work on my run big time. It was a great tune up for Honolulu though. I sure hope they don't allow wetsuits this year at Honolu, it's Hawaii for gods sake.