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Ironman Boulder 2019: Age Group Results and Kona Qualification

The second Ironman of last weekend was Ironman Boulder. Another mid-sized race that comes with a standard 40 Kona slot allocation. Boulder has the additional challenge of altitude which makes for a tougher races for athletes travelling from sea level. With strong front of pack competition this tends to result in a broad spread of results from the course.

Distribution of Finisher Splits at Ironman Boulder 2019 Compared with 2014-2018

This year’s results were slightly faster than the amalgamated historical results. This is especially the case at the front of the race with the top 5% trending 20-30 minutes faster than the past. The major contributor appears to be a faster than usual run.

DNS and DNF Rates at Ironman Boulder
Year
Listed Athletes
Swim Finish
Swim DNS/DNF
Bike Finish
Bike DNF
Run Finish
Run DNF
Overall DNS/DNF
2014
2790
2255
19.2%
2179
3.4%
2000
8.2%
27.5%
2015
2769
2201
20.5%
2121
3.6%
2010
5.2%
27.4%
2016
1490
1456
2.3%
1411
3.1%
1313
6.9%
11.9%
2017
1338
1168
12.7%
1142
2.2%
1071
6.2%
19.9%
2018
1493
1424
4.6%
1321
7.2%
1181
10.6%
20.9%
2019
1147
1087
5.2%
1054
3%
1002
4.9%
12.6%

The faster run also has a much lower DNF rate than recent years. After two years with high drop out rates Boulder appears to have settled a to a more reasonable level. Although, this is still towards the higher end for Ironman courses.

Median Splits by Age Group at Ironman Boulder 2019
Median Splits by Age Group at Ironman Boulder 2014-2018

Age group medians largely reflect the trends from the distribution with a much faster set of run medians and also faster bike medians in most age groups.

Top 10 Nationalities at Ironman Boulder
Country
Count
Percentage
United States
1102
80.9
Canada
50
3.7
Mexico
43
3.2
United Kingdom
17
1.2
Germany
14
1
Switzerland
11
0.8
France
10
0.7
Colombia
9
0.7
Venezuela
8
0.6
Netherlands
6
0.4
Ironman Boulder 2019 Predicted Kona Qualifiers by Country
Country
Percentage of Slots
Percentage of Field
United States
75.0
80.9
Canada
5.0
3.7
Switzerland
5.0
0.8
Australia
2.5
0.3
Venezuela
2.5
0.6
India
2.5
0.1
United Kingdom
2.5
1.2
Belgium
2.5
0.1

The majority of athletes come from North America and they keep hold of most of the slots. A small spread of other nationalities claimed a handful too.

Changes in Male Finishing Times by Position at Ironman Boulder
Changes in Female Finishing Times by Position at Ironman Boulder

Tracking times for specific age groups positions shows that in the largest age groups the front of the pack has been quite consistent over the last 6 years. Further back there’s more variability with 2017 and 2018 being particularly slow for the mid to back of pack athletes.

Ironman Boulder 2019 Predicted Kona Qualification Times
Age Group
Slots
Winner
Average Kona Qualifier
Final Qualifier
M18-24
1
09:46:07
09:46:07
09:46:07
M25-29
3
09:12:35
09:21:48
09:33:01
M30-34
3
08:55:52
09:09:28
09:25:11
M35-39
4
09:23:35
09:34:48
09:42:33
M40-44
4
09:03:36
09:30:53
09:50:24
M45-49
4
08:59:35
09:35:05
09:52:55
M50-54
3
09:33:48
09:51:06
10:08:03
M55-59
2
10:36:38
10:46:24
10:56:10
M60-64
1
10:55:03
10:55:03
10:55:03
M65-69
1
11:55:30
11:55:30
11:55:30
M70-74
1
13:52:16
13:52:16
13:52:16
F18-24
1
11:18:09
11:18:09
11:18:09
F25-29
1
10:12:35
10:12:35
10:12:35
F30-34
1
10:18:34
10:18:34
10:18:34
F35-39
2
09:36:32
09:51:37
10:06:43
F40-44
2
10:15:36
10:22:43
10:29:50
F45-49
1
10:06:56
10:06:56
10:06:56
F50-54
1
11:02:41
11:02:41
11:02:41
F55-59
1
13:02:54
13:02:54
13:02:54
F60-64
1
12:53:45
12:53:45
12:53:45
F65-69
1
15:15:20
15:15:20
15:15:20

Based on the athlete list I’ve calculated the Kona slot allocation for Ironman Boulder and from that the automatic qualification times in each age group. The allocation may vary slightly and roll downs will influence final qualifying times. You can compare this with other races on my Kona qualification page.

Top Twenty Male Performances and Kona Qualification by Age Group at Ironman Boulder 2019
Top Twenty Female Performances and Kona Qualification by Age Group at Ironman Boulder 2019

The times fo the top twenty in each age group trend around the average or slightly better in some cases. Overall this year’s front of pack results come in faster than average and towards the fastest.

You can access a spreadsheet of the full results from Ironman Boulder 2019 on my Google Drive.

All Ironman Results and Statistics

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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