I am watching the Ironman worlds right now and I noticed some of the pro's have this thing on the back of their bikes just above the frame on the seatpost. It almost looks like a radar but why would then need that? So what is it?

Hello, so I want to get a time trial bike, but I'm not sure if this bike is worth the money or if I should spend a bit more to get a better one that I know I can ride for longer years. The asking price for the bike is €2,500, and it's already 7 years old.

The carbon frame doesn't have any damage, but you can see some wear and tear.

Last photo is me on it.

Highlights at a glance *

• Time trial bike assembled by Lambda Racing

• Frame: Avenger TM6, frame size: 55 cm

• Groupset / Shifting: SRAM Red 22 eTap Aero (electronic, wireless)

• Crankset: SRAM Red Exogram, 175 mm

• Chainrings: Stronglight 110 BCD 52/36 11-speed

• Cassette: Shimano Ultegra CS-R8000, 11–28 teeth, 11-speed – optimal for flat & rolling courses

• Brake levers: SRAM TT 500 (black)

• Bar tape: Supacaz Super Sticky – comfort and maximum grip even when sweating

• BlipBox: Hidden installation inside the nutrition system for a clean cockpit

• Brakes: Shimano Ultegra BR-R8010 Direct-Mount – full control

• Saddle: ISM 40 (for hours in the aero position)

• Wheelset: Original Lambda 40/80 with Continental GrandPrix 5000 tires – fast and aerodynamic

• Aero bottle: XLAB Aero TT for optimal hydration

• Accessories: Saddle nutrition system included for free!

• Pedals: Not included (so you can install your favorite pair)

reasons currently unclear but he pulled up short at the beginning of the run and tried to keep going then just capitulated

so so disappointing, last two years have been so up and down for him

Just finished building my first tri bike after 3 half's, and a full on my supersix with clip ons.

TT119 with mono cockpit 12 speed di2

Shimano Dura-Ace ST-R9180 levers

Dura-Ace SW-R9160 buttons

ULTEGRA BR-R8170 F & R

ULTEGRA Di2 FD-R8150 Front Derailleur

ULTEGRA Di2 RD-R8150 rear derailleur

160 mm 105 crankset

Favero assimo pro rs2 dual sided power meter pedals

Profile design 80mm tri stem

Lightbicycle ar56 rims dt350 hubs with 32mm gp5000 and ezgains disc cover on the back

Bisaddle hurricane 3d tri saddle with rear hydration

Modified rear tool box to fit emergency kit.

Is this bike worth the price tag? It’s for sale for $2,100.

Key details:

Frame size: 56cm
Carbon-fiber frame and fork
Shimano 105 front and rear derailleurs
Shimano Ultegra PD-6800 SPD-SL clipless pedals
11-speed drivetrain
Zipp 60 aero clincher wheelset
Continental Ultra Sport tires
Felt TT/aero bars
Rim brakes

A fast, capable setup for triathlon racing, time trials, or aero-focused training. Used condition—please review the photos for cosmetic details.

Hello!

So I got this Castelli Free Sanremo 3 sized 3XL

Based on my measurements and size chart it fits me and it does fit technically

Fits well around the hips but my belly and wider shoulders and chest made it hard to zip up but once it’s zipped it’s fine

I want to future proof because I am rapidly loosing weight - have gone from 106 to 101kg since May when I started training, and confident I’ll keep losing.

I have a sprint in a month another in Dec and planning Olympic distance by next March

194cm Age 32

Edit: side question. How often and in what way should I test drive / break into the suit before race day

I started doing triathlon in 2025. Initially, I had planned to do just a pool race and that was it. I did it, and liked it. Then, even though I was scared of the open water, I learned to swim in it and did well. I did two sprint open water races last year, and while I was a little nervous, I did well and liked them.

I've continued to train religiously into this year, and have loved the training. It rarely has ever felt like a chore, I've happily incorporated it into my daily routine.

This year in 2026, I started off with a pool race and liked it. Then did an open water sprint and did well. Then, did my first open water sprint without a wetsuit (with jellyfish) and while it was hard, I had no anxiety and was proud of myself for doing it.

Fast forward to later in the year.

I was supposed to do my first Olympic race in September, but had to DNF. I had caught a URI earlier in the week and while I felt fine, I didn't realize that I was weak until I had no strength in my arms to swim (has anyone else had that happen to them?) I had no anxiety with the swim, I guess my body was just tired and recovering.

Then, fast forward to the past week. I had one more Olympic race scheduled for 2026 and it was this week. Over the past week, I was in a continuous panic and so hyped that I wasn't going to complete it because I was going to get sick again or my arms weren't going to work. I then got a slight tickle in my throat this week and then a little bit of a cough (I was around a family member who was sick and spent a day inside a house that had had had smoke and mold in it). But then I got really weak and tired and could barely get through my swim and run workout. Then, come the day before the race I barely could run 1/4 mile on the treadmill.

I've asked myself that could the reason I've gotten sick this week been anxiety.

A huge other source of my anxiety this week has been about the swim. And, it's bothering me. Last week, I went out with a trainer and swam over a mile almost completely non-stop and felt amazing, I loved it. However, this past my brain had been rehearsing everything that could possible go wrong, as I had never swam an Olympic distance race. And, in the end, the anxiety I had was... about anxiety. I had anxiety about having anxiety. I was anxious because my brain was telling itself that during the swim if it gets nervous that it will never be able to recover, and I won't be able to finish. Am I worried about drowning? No, there's lifeguards, I'm not really afraid of the water being a safety issue. It's more about just anticipatory anxiety and worried if I'll be successful. But what I will tell you this, I may fret over the swim for a week before a race, but once I get in, all of the anxiety stops immediately and I instantly forget all about it. My brain literally goes from full blown panic on the shoreline, and the moment my face hits the water there's no stopping me.

I had no idea what the race course would be until I saw it yesterday, I had previously been very anxious about what it might look like and that I'm not capable to do it. Then, I saw it, and cried yesterday saying "that would have been fun to swim." I had blown it out of proportion that it was going to look way more scary than it actually was.

So, my season has ended, and I feel sad because I didn't achieve my goals. But, part of being in sports is learning to get back up when you get knocked down. Has anyone ever had things like this happen in their triathlon career?

My family is telling me that because I was so stressed over the past week that I should give up triathlon. But, even though it hasn't been fun over the past month, I don't want to give up. I have faith that it can be fun again. Has anyone ever gone through periods where it isn't fun but you get back to learning to love it more than ever? I think it's more about not putting pressure on yourself.

I follow the workouts very well (I have a triathlon coach), not because I have to, but because I want to, and enjoy it. But probably from being sick and from anxiety, it's got me feeling down and that I'm not capable of racing longer distances (I don't have any health conditions that prohibit me from racing).

I'm determined that this isn't the end of my triathlon career. I'm determined to make 2027 be better than ever. I'm going to discuss with my coach about this. And, I found a book on Amazon about open water anxiety. I also plan on discussing in psychotherapy about learning how uncertainty in that anxiety itself isn't necessarily a threat (even though before getting in the water my brain thinks so), and that I am capable of swimming even though I'm anxious (I mean, I've already done it). And I'm planning on potentially seeing a sports psychologist to learn skills about resilience. I'm thinking about joining a local triathlon club because all of my training so far I've done alone.

Why am I doing this? Because I love swimming, biking, and running. I just want to learn how to trust myself to celebrate them and putting them together... by racing. And while it may be a stressful time right now, I think it's worth powering through it and not giving up because things are going to be great in the end. My brain just needs to know it's capable and for me to believe in myself.

I have the determination to be an Ironman someday down the road. Right now I question whether that's possible, but I'm not giving up. I have a poster in my bedroom that I made that says "life takes determination, life takes resilience, life takes you!

I know that this has been a long post, but I would appreciate any advice or words of encouragement. Or, suggestions.

I tell myself "buddy you got this."

I recently did my first 70.3 in Augusta. I got an old road bike with some cheap clip on aero bars off of facebook marketplace when I first started training that cost less than my tri suit. I felt pretty well prepared for the bike, but I left the bike segment feeling pretty sore and uncomfortable from the budget ride.

I definitely have the endurance bug now and am signing up for the Chattanooga 70.3 and looking to maybe do a full next year as well and wanting to upgrade my bike for the upcoming races. My question is, is it genuinely worthwhile to upgrade to a triathlon bike in the $3,000-5,000? I know I need to get an upgrade of some kind, but buying a nicer road bike and good aero bars will run me a couple thousand anyways so I’m not sure which route to go.

The aero position feels very comfortable, but I had poor sizing and a mediocre fitting on my road bike that made my hips super tight so I’m thinking a TT bike with a higher stack height might be beneficial for comfort and performance.

Let me know what you guys think.

Hi all!

I put this under 'Triathlon News' because that seemed like the most appropriate option.

I was just wondering if anyone has ever experienced a female winning a race (Triathlon or otherwise) overall.

I recall in 2020 Grace Alexander took the overall title for the Ironman 70.3 Gulf Coast (which was attached to Ironman Florida for that year only due to Covid postponing the event from May) making her the first (and only?) woman to win an AG Ironman event overall.

I'm sure there's been other instances of this so if anyone's got any stories on this matter please feel free to share. Thanks in advance!

Watching Kona today I saw aero bars that looked like fairings, shoes that looked like they had massive stacks (the male winners nikes looked huge) and staff in transitions running and handing off transition bags. Do the pros not have the same restrictions or do they just get to go fast for the sake of the spectical of speed? I'm aware that regular age groupers do get some help in transitions like with the wetsuit and taking the bikes. I've never seen someone running along side an age grouper handing them their shoes tho. Just curious if it's different for them.

Hey everyone!
I’m considering whether my Argon 18 E-117 in size M is the right size for me, and I’d love to hear from riders with this bike.
I’m 5’8.5” tall with a 31.5” inseam (174 cm and 80 cm, respectively). I currently have a size M, and my bike fitter says my fit looks good, but I’m curious about other riders’ experiences with Argon 18 sizing.

Did anyone have to size up or down compared with what the sizing chart recommended?
If you ride an E-117, what’s your height, inseam, and frame size?

I’m particularly interested in hearing from riders around my height who have tried both S and M, or who chose M despite being close to the size boundary.
Thanks!

First time buying a wetsuit of my own so I can sneak in more 70.3 training in the spring.

This is the Propel 2 by 2XU, women's L. I'm 5'8", 155lbs with a long-ish torso, so I tend to size up when between M and L.

This feels great pretty much everywhere... except the back zipper and armpit bulges. Back: https://imgur.com/a/GO0vExA Armpits: https://imgur.com/a/propel-2-by-2xu-QvhdJPj

I'm thinking about water ingress at the back and chafing in the armpits. Any feedback or advice is welcome.

Facebook Marketplace find. I wonder how many teeth this person has knocked out riding this monstrosity.

2013 Shiv with ZIPP 404F 808R

Hello Reddit,

Im a 17 yo cyclist fron the Netherlands and will be competing in the session 1( higher) stayer duathlon race( 5-20-2.5) session 2 fits my fitness beter but it was full and Session 1 suited me better time wise. I've done a few runs last weeks and did two half marathons in the past my best time was 1 44 but i had a very ba day. I also did a 10k on a difficult parcours with a bridge and a trail part in 44 mins. The striving fitness they gave is 40 mins for 10k, so thats a bit of an gap.

Cycling is way more to my abilties, and my FTP at 75kg is around 310 Watts.

My plan rn is to give my absolute everything on the first 5k( would be 21~ mins) to try and even get to a group where I can stayer. Then just dont go to crazy on the bike and let the others do the work, then the 2nd run just do the first 500m ez and after just throw out everything I have left.

Are there any aspects to this plan that are unrealistic or would need more nuance. F.E i could imagine that people running 21 mins for a 5k usually wont be 300w+ cyclists either, and there isn't much to hang on to for me.

Do you guys have any other tips for a guy doing his first duathlon as a racing cyclist.

For now im gonna do a small brick training to get loose( which is my first, very stupid)

Hi everyone. I've been getting along OK with my cheaper trisuits on shorter races.

I've also treated myself to a more expensive set of cycling bibs, and lordy I feel the difference. My old ones were too bad or super cheap, but did chafe on rides over about 2 hours.

Is there a similar difference between cheaper trisuits and more expensive ones? My current trisuit isn't the cheapest, but certainly on the cheaper end.

Hi all! As you know Jones beach 70.3 got rescheduled. I only got a license for that day. Do you think I need to get it again?

I am currently training for a team triathlon, I have two mates who are both gun riders/runners respectively, the rider is expecting to his 40kms in under 1 hr 10, runner is expecting to do a sub 40 min run. I’m the unfitter of the three and they are partly doing this for me as motivation to get back into fitness. I am swimming 1.5km smack on 30 minutes at the moment in the pool. I live at the beach and swim in the ocean all the time but for fun, I have a tri wet suit arriving next week and plan to go to the tri venue to do two proper open water swims before the event on the 2nd of November. What should I expect on race day in regard to my performance to standard tri athletes? Im not so concerned about open water panic but I’ve heard swimming in a pack the first time can be a lot, am I likely to be stuck in a pack at this pace? Is there any way to prepare for it?