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Ironman Western Australia 2018: Age Group Results and Kona Qualification

The final Ironman race of the 2018 season is Ironman Western Australia. A long standing race which drew a field of over 1,000 athletes with 65 age group Kona slots on offer. This year’s race looks to have been quite typical for the Busselton course with times only slightly slower at the median.

I’ve excluded 2017 results from this analysis due to the cancellation of the swim.

Distribution of Finisher Splits at Ironman Western Australia 2018 Compared with 2008-2016

The distributions from this year’s race all trend subtly slower than those from 2008-2016. Individual differences are relatively small, but add up to a 15 minute overall difference at the median. At the front of the pack, considering those in the top 5%, there is little difference in the times compared with past races.

DNS and DNF Rates at Ironman Western Australia
Year
Listed Athletes
Swim Finish
Swim DNS/DNF
Bike Finish
Bike DNF
Run Finish
Run DNF
Overall DNS/DNF
2008
1179
1027
12.9%
1027
1028
12.7%
2009
1313
1122
14.5%
1122
1124
14.4%
2010
1294
997
23%
997
997
22.9%
2011
1259
1241
1.4%
1213
2.3%
1180
2.7%
6.3%
2012
1342
1330
0.9%
1302
2.1%
1238
4.9%
7.6%
2013
1402
1365
2.6%
1360
0.4%
1330
2.2%
5.1%
2014
1699
1416
16.7%
1374
3%
1323
3.7%
21.8%
2015
1189
1140
4.1%
1122
1.6%
1092
2.7%
8.2%
2016
1382
1373
0.7%
1345
2%
1318
2%
4.6%
2017
1438
100%
1283
1197
6.7%
16.8%
2018
1019
1014
0.5%
994
2%
964
3%
5.4%

DNF rates at this years race look to be typical for the course and comfortably within range of other years. Remember the red rows mix both DNS and DNF numbers into the swim and overall DNF rates, blue rows are purely DNF numbers.

Median Splits by Age Group at Ironman Western Australia 2018
Median Splits by Age Group at Ironman Western Australia 2008-2016

Comparing age group medians shows that this year’s race does trend a little slower at the medians. There’s some variance over age groups as the differences tend to be very small in each discipline.

Changes in Male Finishing Times by Position at Ironman Western Australia
Changes in Female Finishing Times by Position at Ironman Western Australia

Tracking the times for specific age group positions in each age group over the last decade places this year in the middle of the bunch. Neither the fastest or slowest seen for the course. Often first places with age groups trend towards the faster end of times. Further back times trend a little more towards the slower end. Variations are more pronounced within the smaller age groups

Ironman Western Australia 2018 Predicted Kona Qualification Times
Age Group
Slots
Winner
Average Kona Qualifier
Final Qualifier
M18-24
1
09:36:37
09:36:37
09:36:37
M25-29
4
08:59:40
09:19:12
09:32:34
M30-34
6
09:01:29
09:11:10
09:23:59
M35-39
7
08:47:08
09:20:59
09:36:07
M40-44
7
08:47:40
09:18:43
09:41:40
M45-49
9
09:20:31
09:35:34
09:48:54
M50-54
5
09:38:31
09:56:37
10:13:25
M55-59
3
10:08:36
10:32:32
10:46:32
M60-64
1
10:51:15
10:51:15
10:51:15
M65-69
1
11:10:12
11:10:12
11:10:12
M70-74
1
13:57:09
13:57:09
13:57:09
F18-24
1
11:33:54
11:33:54
11:33:54
F25-29
1
09:56:46
09:56:46
09:56:46
F30-34
2
09:35:10
09:37:00
09:38:50
F35-39
3
09:34:41
10:07:32
10:28:15
F40-44
3
10:02:51
10:19:26
10:38:49
F45-49
4
10:18:40
10:43:18
11:10:48
F50-54
2
11:05:46
11:12:57
11:20:09
F55-59
1
10:55:25
10:55:25
10:55:25
F60-64
1
12:33:38
12:33:38
12:33:38
F65-69
1
14:07:39
14:07:39
14:07:39

Based on the start numbers I’ve calculated the slot allocation using what I believe to be the current method. Roll down will affect final qualification times. You can compare this with other Kona qualification races on my Kona qualification page.

Top Twenty Male Performances and Kona Qualification by Age Group at Ironman Western Australia 2018
Top Twenty Female Performances and Kona Qualification by Age Group at Ironman Western Australia 2018

For the most part the age group top twenty times trend close to the average line. This is most consistently true at the very front – the Kona slot places. There’s variation across age groups, but for the most part times were consistent with previous qualification at specific places. The extra slots on offer lifts the final qualification time for some age groups though.

You can access a spreadsheet of the full results from Ironman Western Australia 2018 on my Google Drive.

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A growing collection of results and statistics for the whole Ironman race calendar.

Find out what it takes to place in your age group or to qualify for the Ironman Worlds Championships in Kona.

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