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: Greg Harper 2, Ari Klau 3. This only counts races where both athletes have stored results.
Win share
Greg Harper
33%
Win share
Ari Klau
67%
Latest shared race
2026 Ironman 70.3 Gulf Coast
5/8/2026 · edge Ari Klau
13
Greg Harper
5
Ari Klau
Head-to-head
Greg Harper vs Ari Klau
Ari Klau leads: 2-4 across 6 shared starts
Last 5 shared: Greg Harper 2, Ari Klau 3
Latest shared race: 2026 Ironman 70.3 Gulf Coast - edge Ari Klau
Career starts: Greg Harper 10, Ari Klau 22
Career wins: Greg Harper 0, Ari Klau 0
10
Starts
22
0
Wins
0
0
Podiums
2
1
Top 10s
12
#10
Best
#2
#18
Avg pos
#11.5
518
Points
1067
2
Greg Harper head-to-head wins
6
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 Gulf Coast
5/8/2026
13
Greg Harper
3:24:44
5
Ari Klau
3:17:46
2026 Ironman 70.3 Dallas
3/14/2026
18
Greg Harper
3:29:01
DNF
Ari Klau
DNF
2025 Ironman 70.3 Oceanside
4/4/2025
32
Greg Harper
4:07:54
9
Ari Klau
3:54:57
2024 Ironman 70.3 World Championship
12/13/2024
32
Greg Harper
3:53:23
29
Ari Klau
3:50:45
2023 Ironman 70.3 Indian Wells
12/2/2023
24
Greg Harper
3:57:48
44
Ari Klau
4:25:32
2023 Ironman 70.3 Maine
7/29/2023
13
Greg Harper
3:55:50
7
Ari Klau
3:48:18
| Race | Greg Harper | Ari Klau | Edge |
|---|---|---|---|
| 2026 Ironman 70.3 Gulf Coast 5/8/2026 | 13 3:24:44 | 5 3:17:46 | B |
| 2026 Ironman 70.3 Dallas 3/14/2026 | 18 3:29:01 | DNF DNF | A |
| 2025 Ironman 70.3 Oceanside 4/4/2025 | 32 4:07:54 | 9 3:54:57 | B |
| 2024 Ironman 70.3 World Championship 12/13/2024 | 32 3:53:23 | 29 3:50:45 | B |
| 2023 Ironman 70.3 Indian Wells 12/2/2023 | 24 3:57:48 | 44 4:25:32 | A |
| 2023 Ironman 70.3 Maine 7/29/2023 | 13 3:55:50 | 7 3:48:18 | B |