A slew of records, a record low DNF rate at the Ironman World Championship

Enjoying near-perfect race-day conditions, this year's Ironman World Championship featured 14 course records and the lowest DNF rate on record.

| November 1, 2018 | RACES

Everything about race day at this year\'s Ironman World Championship was fast - both the men\'s and women\'s swim records were broken.

Everything about race day at this year's Ironman World Championship was fast - both the men's and women's swim records were broken.

Photo >Kevin Mackinnon

It wasn't just the pros who enjoyed the fastest day in Ironman World Championship history in Kona this year - in addition to the course records set by Patrick Lange (7:52:39) and Daniela Ryf (8:26:16), 14 age group records were set in the near-perfect conditions on the Big Island.

Some of the records were close (Mikkel Hojborg Olsen broke Kyle Buckingham's 30 to 34 record by just 11 seconds), while others shattered the previous times by huge margins (Janette Dommer took Lisbeth Kenyon's 45-49 record by a whopping 38:05).

There's no two ways about it - this was a once-in-a-lifetime year to compete on the Big Island - as you can see from the list of course records below.

Ironman World Championship Age Group Records

October 13, 2018

Age Group

Year

Previous record holder

Time

New record holder

New record time

Difference

W30-34

2011

Maree Hufe

09:37:09

Tessa Kortekaas

09:36:26

43 sec

W35-39

2013

Stefanie Adam

09:33:29

Christina Svejstrup

09:28:48

4:41 min

W45-49

2010

Lisbeth Kenyon

10:01:30

Janette Dommer

09:23:25

38:05 min

W50-54

2013

Christine Heidemann

10:19:37

Michelle Enslin

10:12:02

7:35 min

W60-64

2013

Beverly Watson

11:50:41

Julia Daggett

11:41:44

8:57 min

W65-69

2013

Cullen Goodyear

12:57:17

Missy Lestrange

12:28:43

28:34 min

M18-24

2015

Malte Bruns

08:52:30

Timo Schaffeld

08:51:50

3:12 min

M25-29

2010

Trevor Delsaut

08:40:43

Rasmus Svenningsson

08:34

6:42 min

M30-34

2013

Kyle Buckingham

08:37:26

Mikkel Hojborg Olsen

08:37:15

11 sec

M35-39

2013

Sam Gyde

08:45:00

Dan Plews

08:24:36

20:24 min

M45-49

2013

Rene Rovera

09:02:51

Koen Van Rie

08:55:33

7:18 min

M50-54

2013

Wolfgang Schmatz

09:16:38

Carl Brummer

09:05:37

11:01 min

M55-59

2013

Christian Bodson

09:18:18

Richard Sweet

09:14:23

3:55 min

M75-79

2005

Bob Scott

13:27:50

Robert Plant

13:06:03

21:47 min

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At the other end of the spectrum, it couldn't have been a better year to compete in Kona for those who might have been worried about not making any of the regular cut off times, let alone be after a record. Detailed statistics are only available from 2003 onwards, but this year's DNF rate (3.3 percent) was by far the lowest seen in the last 15 years (and possibly ever) at the Ironman World Championship. Below you'll see the DNF rates for all components of the race over the last 15 years.

Thanks to Simon Müller for compiling the statistics for this story,

Ironman World Championship DNF Comparison

2003 to 2018

Year

Number of athletes

Swimming finishers

Swimming DNF

Bike finishers

Bike DNF

Run finishers

Run DNF

DNF total

2003

1713

1625

5.10%

1610

0.90%

1568

2.60%

8.40%

2004

1797

1705

5.10%

1660

2.60%

1575

5.10%

12.20%

2005

1797

1724

4.10%

1724

0%

1686

2.20%

6.10%

2006

1786

1687

5.50%

1669

1.10%

1620

2.90%

9.10%

2007

1835

1777

3.20%

1738

2.20%

1682

3.20%

8.20%

2008

1808

1733

4.10%

1697

2.10%

1633

3.80%

9.50%

2009

1853

1804

2.60%

1732

4%

1649

4.80%

10.80%

2010

1927

1841

4.50%

1814

1.50%

1768

2.50%

8.10%

2011

1918

1851

3.50%

1832

1%

1770

3.40%

7.50%

2012

1983

1983

0%

1952

1.60%

1886

3.40%

4.80%

2013

2067

2064

0.10%

2040

1.20%

1970

3.40%

4.40%

2014

2187

2108

3.60%

2057

2.40%

1984

3.50%

9.20%

2015

2308

2295

0.60%

2240

2.40%

2137

4.60%

7.30%

2016

2315

2208

4.60%

2185

1%

2114

3.20%

8.60%

2017

2347

2339

0.30%

2291

2.10%

2214

3.40%

5.80%

2018

2385

2379

0.30%

2349

1.30%

2306

1.80%

3.30%

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