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Full splits and analysis on TriRating. Race report on Triathlon Magazine Canada.

Women's Top Five

  1. Taylor Knibb (USA): 4:19:24 (25:59 / 2:32:07 / 1:17:56)
  2. Julie Derron (SUI): 4:23:30 (27:20 / 2:39:40 / 1:13:04)
  3. Alanis Siffert (SUI): 4:25:10
  4. Solveig Lovseth (NOR): 4:25:50
  5. Marjolaine Pierre (FRA): 4:26:38

Women's Race: What Happened

Sophie Evans was first out of the water in a 13-person front pack that included Knibb and Siffert. Derron was 1:31 back in the chase group.

Knibb put on a blistering pace on the bike. She climbed the Col de Vence in 29:48, a course record, at a reported 303 watts. She summited more than six minutes clear of Siffert and reached T2 with 4:24 on Pierre. Siffert was 5:34 down and Lovseth 7:56. The UCI Grand Tours haven't attempted this climb yet, so it may be the most impressive performance ever on the bike for this route.

Derron started the run in 11th, roughly nine minutes behind. She ran 1:13:04 (3:27/km) and finished second, 4:06 back. Siffert held third and beat her seeding by nearly eight minutes.

Knibb joked afterwards that she had expected to lose three or four minutes on the descent.

Men's Top Five

  1. Hayden Wilde (NZL): 3:50:51 (23:44 / 2:16:50 / 1:07:21)
  2. Kristian Blummenfelt (NOR): 3:51:09 (23:50 / 2:19:02 / 1:05:12)
  3. Jelle Geens (BEL): 3:52:40
  4. Gustav Iden (NOR): 3:53:16
  5. Lasse Nygaard Priester (GER): 3:54:08

Men's Race: What Happened

This ending was one for the ages! After falling behind by over 2 minutes in the earlier stages, Blummenfelt gave a run performance of a lifetime and nearly scratched and clawed his way to victory. However, Wilde was able to hold him off and reach the finish line a mere 18 seconds ahead.

27 men came out of the water together. Blummenfelt was 22 seconds back, which is a good swim for him.

The bike separated almost nobody. Michele Bortolamedi led into T2 with Wilde 16 seconds back and Bogen 17. Blummenfelt started the run 16th, 2:29 down.

He then proceeded to run an incredible 1:05:12 (3:05/km). Triathlon Magazine has that as the fastest 70.3 run split on record. He took nearly all of it back along the Promenade des Anglais and finished 18 seconds behind. Geens took third despite a disrupted build, and Iden was fourth, 11 minutes inside his seeding.

Wilde had been passed late at both the Olympics and the 2024 championship, so this one probably means a bit more than most.

The Importance of The Bike Stage

One contrast stands out across the two days. Nine of the ten fastest men swam within 20 seconds of each other, and the top ten bike splits covered 2 minutes 19 seconds in total. The run sorted the podium.

Knibb did the opposite. She made the bike decisive and won by 4:06 over the fastest runner in the field, who out-ran her by almost five minutes. She was the only athlete across both days who took real time on the bike.

Pre-Race Questions Resolved?

  • The flat run rewarded the pure runners in both races. Both second places came from outside the top ten off the bike.
  • Charles-Barclay's 29% odds went to Knibb and Derron, who were the next two names in the model.
  • The bike question got no answer. Riddle rode 2:17:50 on the aero road bike and finished 7th, which isn't enough to make a determination either way.

Post Race Questions

  • Did the men get the bike strategy wrong, or is 1,244 m simply not enough to break up a 27-man pack?
  • Knibb rode 303 watts up the Col de Vence and then lost 4:52 to Derron on the run. Was that a good trade or a lucky one?
  • Blummenfelt ran the fastest 70.3 split on record and lost by 18 seconds. Did he have enough room for another 18 seconds on the bike, or would it have been an even trade?
  • Iden was 11 minutes inside his seeding. Is that a return to form or a good day on a course he already knows?
  • Did anybody catch this live and see Knibb's descent? She thought it would cost her three or four minutes.

For The Rest of Us

Blummenfelt ran 3:05/km after that bike course. For us mere mortals, does riding a hilly bike leg conservatively actually protect the run, or do you give up more time climbing than you can ever get back? If you've raced a hilly 70.3 or Olympic, how do you think your choice impacted your finish?

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I was watching an interview with Reece Barclay recently (youtube link here if anyone was curious) and he made an offhand comment that most people could win their age group with about 10-15 hours of weekly training time over the course of a year. They were speaking in generalities, so I think he meant that it would apply to 5k's, half marathons, and even many triathlons.

Breaking it down, that's about 90-120 minutes per weekday, and then a block of 5-7 hours over the weekend. How do those numbers compare to what you do? Was it enough to win (or at least podium) your age group for your latest race? How many hours do you think ARE required to finish at the top of your group?

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Women's pro race: Saturday Sept 12, 6:30AM CEST / 12:30AM ET Men's pro race: Sunday Sept 13, 6:30AM CEST / 12:30AM ET Watch: Ironman YouTube Track: Ironman Tracker App

The Course

Swim starts at Plage des Ponchettes. The bike portion includes 1,244 m (4,101 ft) of climbing, then a flat run along the Promenade des Anglais. Nice last hosted in 2019, when Gustav Iden and Daniela Ryf won.

TriRating's seedings expect a winning time around 4:18 for the women and 3:50 for the men, roughly 14 and 11 minutes slower than the 2019 race here.

The elevation change creates some choices for the athletes. Jamie Riddle is racing a 6.8 kg aero road bike rather than a TT bike. Blummenfelt was seen testing a new Giant Trinity a month earlier. It will be interesting to see what the riders use.

Swim Map

Bike Map

Run Map

What's at stake

3,000 Ironman Pro Series points, and both Pro Series titles are decided across this weekend and Kona.

Kona is October 10 (four weeks out). Normally, there's a 5 week break between these races. We've already seen a few withdrawals for those who wanted to focus on Kona entirely.

Women's Race: Who To Watch

Taylor Knibb is attempting three world championships in two sports inside of a month. This includes a fourth 70.3 title here, the UCI Road Worlds individual time trial in Montreal, and Kona on Oct 10. She won 70.3 Worlds in 2022, 2023 and 2024. This season she's won T100 Gold Coast and 70.3 Oceanside (course record by five minutes), was second at Ironman Texas, and mixed a World Cup win in Edmonton with 11th at WTCS Alghero and 7th at WTCS London.

TriRating had her at 37% on Aug 18, with defending champion Lucy Charles-Barclay second at 29% before Charles-Barclay withdrew to focus on Kona. She's the first defending 70.3 champion to skip Worlds since 2011. Her reasoning: "I don't want to reach a hard moment in Kona and wonder whether I left part of my best performance in Nice."

Also racing:

  • Julie Derron (SUI): 24% in the model, third-highest, and the one name the magazine previews mostly skipped. She ended Knibb's winning streak at T100 San Francisco last year.
  • Laura Philipp: won the 2024 Ironman World Championship on these roads, known for aggressive descending. Leads the Pro Series and won the final regular-season stop at Zell am See after an illness-disrupted spring. Has said outright that Kona is her goal for the year.
  • Solveig Lovseth: reigning Ironman world champion, won Ironman Texas this year, sitting about 37 adjusted points behind Philipp in the series.
  • Kat Matthews: 2025 Pro Series champion, currently trailing after Texas.

Not racing: Charles-Barclay (Kona), Georgia Taylor-Brown (4th last year), Grace Thek (Kona), Vittoria Lopes.

Men's Race: Who To Watch

Jelle Geens is going for a third straight title, but it's probably only his second-most-important race of the autumn. He's won the last two 70.3 Worlds, but his whole 2026 has been pointed at a full-distance Kona debut. He raced Ironman Texas in the spring and said in February that Kona was the goal. He also lost his most recent start, to Lasse Nygaard Priester at Zell am See.

TriRating's top three on Aug 18: Wilde 28%, Geens 26%, Blummenfelt 24%. They all seem to have pretty even odds going in.

  • Hayden Wilde: The tentative favorite, and was unbeatable until Rico Bogen got to him at T100 San Francisco in June. There have been reports of an extended illness since. We'll see where his form is for this race.
  • Lasse Nygaard Priester: Five podiums from five starts this year, with wins at 70.3 Sweden and Zell am See. Priester said before Zell am See that he'd be happy if it came down to a run battle.
  • Kristian Blummenfelt: 2022 champion, won Ironman Texas this season. Never count him out.
  • Rico Bogen: 2023 champion, back-to-back T100 San Francisco titles.
  • Marten Van Riel: 2024 T100 world champion, best-placed in the series of the Zell am See front-runners.
  • Casper Stornes: Reigning Ironman world champion, won a shortened Ironman Frankfurt in June.
  • Gustav Iden: Won on this course in 2019, and again in 2021.

Not racing: Sam Laidlow (racing Challenge Samarkand instead), Sam Long, Lionel Sanders, Ben Kanute, Harry Palmer.

Open questions

  • Who has the most to gain from Charles-Barclay's absence?
  • Wilde, Geens, and Blummenfelt are all fairly even odds. Who stands to benefit the most from the additional elevation changes on the bike?
  • TT bike or aero road bike. If Riddle has a good day, do you think it may cause some trends to emerge?
  • Does the flat run reward whoever climbed most conservatively, or does it hand it to the pure runners regardless?
  • Which of these people are actually peaking here, and which are training through it with Oct 10 in mind?

For the rest of us

Has anyone ever ridden a climb similar to this one? Have you tried it on a tri-bike? It's hard to understand what that would do to you, especially given that you have to run a marathon afterwards.

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I know there’s a wide range of what’s possible when it comes to tri bikes. I’ve heard stories of people using mountain bikes on sprints. But almost everyone who posts online about triathlon (including Reddit) seems to have a $5,000 time trial bike.

Did the purchase of your race bike have to come with some sacrifices? Did you save up for a while? Take out a loan (like a car)?

I’m using a $600 bikedirect road bike now and I’m curious how everyone ended up with the wheels they use now. Tell me your story!

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I've been interested in triathlons for a while now, and I'm starting to train for my first sprint (actual race TBD). However, I'm starting out at an obese weight. I'm currently 1.88m tall (6'2") and 120kg (265 lbs). I hope to be somewhere near 110kg (240lbs) before I try a sprint, and closer to 90kg (200lbs) before doing an Olympic or half Ironman. There are a couple things I cant quite figure out based on reading alone:

  1. Should my process change when a calorie deficit is the goal? Everything I read about training says to fuel the work and replace the calories you consume. I obviously don't want to do that because I have 10+ years of excess calories sitting inside of me that need to be used. Has anyone had success with training on a deficit? How low have you gotten while still making progress towards both goals?
  2. Because I'm heavier, I'm concerned about injuries. Luckily, I can run at a snail's pace for an hour without any discomfort or issues, but the threat of a nagging achilles or knee worries me when I start to ramp up. Additionally, I have a road bike, but I don't even think most road bikes are made for my weight.

If you accomplished this (lost significant weight while training), how did you handle the deficit and prevent injuries? What worked?