Compare
Athlete head-to-head
Compare career records, current form and shared race results. Use athlete slugs, names, or profile IDs.
Battle read
Ari Klau leads the stored head-to-head
Last 5 shared: Brennen Smith 2, Ari Klau 3. This only counts races where both athletes have stored results.
Win share
Brennen Smith
43%
Win share
Ari Klau
57%
Latest shared race
2026 Ironman 70.3 Chattanooga
5/16/2026 · edge Ari Klau
16
Brennen Smith
2
Ari Klau
Head-to-head
Brennen Smith vs Ari Klau
Ari Klau leads: 3-4 across 7 shared starts
Last 5 shared: Brennen Smith 2, Ari Klau 3
Latest shared race: 2026 Ironman 70.3 Chattanooga - edge Ari Klau
Career starts: Brennen Smith 16, Ari Klau 22
Career wins: Brennen Smith 0, Ari Klau 0
16
Starts
22
0
Wins
0
1
Podiums
2
4
Top 10s
12
#3
Best
#2
#17.1
Avg pos
#11.5
783
Points
1067
3
Brennen Smith head-to-head wins
7
Shared race starts
4
Ari Klau head-to-head wins
Shared races
Only races where both athletes have a stored result are shown.
2026 Ironman 70.3 Chattanooga
5/16/2026
16
Brennen Smith
3:56:30
2
Ari Klau
3:45:47
2026 Ironman 70.3 Dallas
3/14/2026
33
Brennen Smith
3:38:07
DNF
Ari Klau
DNF
2025 Ironman 70.3 Santa Cruz
9/6/2025
23
Brennen Smith
4:02:39
5
Ari Klau
3:45:39
2025 Ironman 70.3 Oceanside
4/4/2025
33
Brennen Smith
4:09:29
9
Ari Klau
3:54:57
2023 Ironman 70.3 Indian Wells
12/2/2023
17
Brennen Smith
3:53:07
44
Ari Klau
4:25:32
2023 Ironman 70.3 Oregon
7/22/2023
7
Brennen Smith
3:43:20
15
Ari Klau
3:49:26
2022 Ironman 70.3 Indian Wells
12/3/2022
13
Brennen Smith
4:04:34
9
Ari Klau
3:57:58
| Race | Brennen Smith | Ari Klau | Edge |
|---|---|---|---|
| 2026 Ironman 70.3 Chattanooga 5/16/2026 | 16 3:56:30 | 2 3:45:47 | B |
| 2026 Ironman 70.3 Dallas 3/14/2026 | 33 3:38:07 | DNF DNF | A |
| 2025 Ironman 70.3 Santa Cruz 9/6/2025 | 23 4:02:39 | 5 3:45:39 | B |
| 2025 Ironman 70.3 Oceanside 4/4/2025 | 33 4:09:29 | 9 3:54:57 | B |
| 2023 Ironman 70.3 Indian Wells 12/2/2023 | 17 3:53:07 | 44 4:25:32 | A |
| 2023 Ironman 70.3 Oregon 7/22/2023 | 7 3:43:20 | 15 3:49:26 | A |
| 2022 Ironman 70.3 Indian Wells 12/3/2022 | 13 4:04:34 | 9 3:57:58 | B |