Winning the IRONMAN World Championship is the ultimate goal in Kona. But for several leading contenders, Saturday’s race also carries a second major prize: the IRONMAN Pro Series title.

The financial stakes are substantial. Each Pro Series champion earns a $200,000 bonus – $75,000 more than the $125,000 first prize for winning Kona. An athlete who claims both titles on Saturday will therefore collect $325,000 from those two prizes alone.

And for the first time in the Series’ three-year history, the full-distance World Championship is its final counting event, with the men and women racing on the same day.

That means Saturday 10 October is without doubt triathlon’s biggest-ever single payday – $1.7m worth of Pro Series year-end bonuses on the line plus $750,000 in Kona prizemoney.

Casper Stornes’ withdrawal has transformed the men’s Pro Series contest, leaving Marten Van Riel, Jonas Schomburg, Kristian Blummenfelt and Gustav Iden as the leading contenders.

The women’s title looks likely to come down to defending world champion Solveig Løvseth and Laura Philipp, separated by just 61 seconds on IRONMAN’s adjusted calculations.

We’ve crunched the numbers to explain how it works – and the gaps to watch.

How are Pro Series points calculated?

Kona awards 6,000 points to the winner of each professional race.

Every subsequent finisher loses one point for each second they finish behind the winner. Finish five minutes back, for example, and the race score is 5,700 points.

The Series counts an athlete’s best five eligible results, with a maximum of three full-distance IRONMAN races.

That makes the headline standings potentially misleading. Some athletes can add their Kona score in full; others must replace an existing counting result.

The useful comparison is therefore how their totals would stack up after accounting for those replacements – and how much time they need to gain on one another in Hawaii.

Men: Van Riel has the advantage

Stornes had been in the strongest position heading towards Kona, but the defending world champion’s training crash and subsequent withdrawal have changed the equation.

It’s Van Riel who now holds the advantage once the counting-score adjustments are made.

The leading challengers are this far behind him:

Athlete	Points carried forward before adding Kona*	Maximum final total	Adjusted deficit to Van Riel
Marten Van Riel	14,872	20,872	—
Jonas Schomburg	14,678	20,678	3:14
Kristian Blummenfelt	14,624	20,624	4:08
Gustav Iden	14,272	20,272	10:00

What does Van Riel need?

Van Riel does not necessarily have to win the world title to win the Series.

Against his closest challengers, he can afford to finish behind – provided the gaps remain smaller than their adjusted deficits.

That means finishing less than 3:14 behind Schomburg, less than 4:08 behind Blummenfelt and less than 10 minutes behind Iden would preserve his advantage over each of them.

He must satisfy all those comparisons, while a sufficiently large time loss could also bring athletes further down the Series order into contention.

What does Blummenfelt need?

Blummenfelt needs to finish more than 4:08 ahead of Van Riel to move above him in the final Series standings.

He also needs to finish more than 54 seconds ahead of Schomburg. That is the difference between their respective adjusted deficits to the Belgian.

Against Iden, Blummenfelt has a 5:52 cushion: finishing less than that behind his compatriot would keep him ahead in the Series comparison.

For example, if Blummenfelt wins Kona and Van Riel finishes five minutes behind, the Norwegian would finish 52 points ahead of the Belgian. Schomburg and the other contenders would still need to be accounted for.

What do Schomburg and Iden need?

Schomburg needs more than 3:14 over Van Riel. He can finish behind Blummenfelt by less than 54 seconds and still remain ahead of him in the Series.

Iden faces a larger task. He needs more than 10 minutes over Van Riel, more than 6:46 over Schomburg and more than 5:52 over Blummenfelt to finish above all three.

The margins show why winning Kona alone does not guarantee winning the Series. A world champion could cross the line first while a rival finishing behind takes the season-long crown.

Kacper Stepniak and Trevor Foley are next in the adjusted order, more than 25 minutes behind Van Riel, so would need major time gains over several rivals to enter the title battle but there’s still big money on offer lower down – $50,000 for fifth and $40,000 for sixth for example.

Why Blummenfelt’s old Stornes target has changed

In September, Blummenfelt discussed a Kona “side quest”: gaining almost seven minutes on Stornes to finish above him in the Series.

That calculation reflected their different numbers of counting races.

Blummenfelt had 17,124 points from five results, while Stornes had 15,032 from four. Blummenfelt’s Kona result would replace a 2,500-point score, whereas Stornes could add his fifth result in full.

With Stornes now unable to race, the relevant target is Van Riel – and a gap of more than 4:08.

The broader lesson remains the same: the number at the top of the standings is only part of the story.

Women: Just 61 seconds between top two

The women’s leading battle is even tighter.

Although Laura Philipp leads the published standings with 17,179 points, Solveig Løvseth has the advantage once their counting scores are taken into account.

Philipp has five results and her Kona score would replace the 2,241 points she earned at IRONMAN 70.3 Aix-en-Provence. That leaves her carrying forward 14,938 points.

Løvseth has completed four counting races and can add her Kona score in full to her existing 14,999 points — giving her a 61-point advantage over the German.

With one point lost for every second behind the race winner, that translates into a fraction over a minute on the roads of Hawaii.

What does Løvseth need?

Løvseth will remain ahead of Philipp in the Series if she finishes ahead of her – or less than 61 seconds behind.

That means Philipp could win the world title with Løvseth close behind, while the Norwegian takes the season-long crown.

For example, if Philipp wins Kona and Løvseth finishes 45 seconds later, Løvseth would still finish 16 points ahead in the Series.

What does Philipp need?

Philipp needs to finish more than 61 seconds ahead of Løvseth to move above her in the final Series standings.

A 90-second advantage in Kona would put Philipp 29 points ahead in their Series comparison.

Neither necessarily has to win the race to take the Series title. Their accumulated scores mean the margin between them could decide it even if another athlete wins the World Championship.

An exact 61-second gap would leave them level on points, bringing the Series tie-break rule, which starts with the head-to-head record, into play.

Could someone else win the Series?

Løvseth and Philipp are the clear favourites, but their advantage does not make the title mathematically exclusive to them.

Katrine Christensen is next in the adjusted order, 30:43 behind Løvseth and 29:42 behind Philipp.

She would therefore need to gain more than those respective margins on both to finish above them, while also holding off the other challengers.

A difficult race or retirement for either leading contender could substantially change the picture.

Can Kat reach the Series podium?

Kat Matthews, the Series winner in both 2024 and 2025, faces a different challenge this time.

She has 12,253 points from four completed scoring races and can add her Kona result in full. Her retirement at IRONMAN Texas contributed no points.

Christensen is in the strongest position for third in the adjusted order, followed by Marta Sanchez. But the race-day gaps could move several athletes up or down.

Athlete	Points carried forward before adding Kona*	Maximum final total	Adjusted deficit to Løvseth
Solveig Løvseth	14,999	20,999	—
Laura Philipp	14,938	20,938	1:01
Katrine Christensen	13,156	19,156	30:43
Marta Sanchez	12,931	18,931	34:28
Lotte Wilms	12,271	18,271	45:28
Kat Matthews	12,253	18,253	45:46
Lisa Perterer	12,237	18,237	46:02
Tamara Jewett	12,196	18,196	46:43
Hannah Berry	12,159	18,159	47:20
Grace Thek	11,319	17,319	61:20

It gives the women’s race another compelling thread beyond the world-title contest – and plenty of reason to keep watching the clock as athletes head towards Ali‘i Drive.