Today the Marines Ironman 70.3 World Championships athletes checked in their bikes at T1 between noon and 6pm and we were there to check out some of the bikes and a few of the athletes.

For a while it looked like a thunder storm might move in, but the angry skies only lingered for a while before moving on. So the bike check-in went without a hitch.

But quite a few folks were surprised when they saw Craig Alexander show up with a Cervelo P4 towards the end of the bike check-in period.

All images © Herbert Krabel / slowtwitch.com

Slowtwitcher Brian Dunn was first to check in his bike.

Matty White's Merida is quite stealthy.

The custom Seven of Hector Picard, and we will soon do a story on this inspirational athlete.

Hector controls both brakes with his thigh.

Annie Gervais is the owner of this Teschner.

Luke Bell was very upbeat when he checked in and told us that his new Argon18 is getting built as we speak.

The QR CD01 of former Credit Agricole Pro Saul Raisin in transition.

Luke McKenzie looks fit and ready.

There are quite a few Aussies at the start here and among them is Chris Legh.

Chris Lieto should really enjoy this bike course here in Las Vegas.

Chris Lieto's Trek Speed Concept is locked and loaded.

Around 4pm the bike check-in started to get really busy.

Karin Thuerig looked very calm and relaxed, and this course should suit her well.

Melissa Rollison is one of the favorites here in Las Vegas.

Nice custom wheel stickers on this age grouper bike.

Michael Weiss is one of 10 SRM sponsored athletes whose power data will be transmitted live during the race.

Weiss has been very busy here and he also should find the bike course to his liking.

Melanie McQuaid seems to really like it on the road.

It was quite a surprise when Craig Alexander rolled in with this Cervelo P4 and not his Orbea Ordu.

With just a few minutes to spare most bikes were parked in transition.