Compare
Athlete head-to-head
Compare career records, current form and shared race results. Use athlete slugs, names, or profile IDs.
Battle read
Mathias Petersen leads the stored head-to-head
Last 5 shared: Robert Kallin 2, Mathias Petersen 3. This only counts races where both athletes have stored results.
Win share
Robert Kallin
30%
Win share
Mathias Petersen
70%
Latest shared race
2026 Ironman Texas
4/17/2026 · edge Mathias Petersen
DNF
Robert Kallin
24
Mathias Petersen
Head-to-head
Robert Kallin vs Mathias Petersen
Mathias Petersen leads: 3-7 across 10 shared starts
Last 5 shared: Robert Kallin 2, Mathias Petersen 3
Latest shared race: 2026 Ironman Texas - edge Mathias Petersen
Career starts: Robert Kallin 29, Mathias Petersen 43
Career wins: Robert Kallin 0, Mathias Petersen 3
29
Starts
43
0
Wins
3
3
Podiums
11
18
Top 10s
27
#2
Best
#1
#10.5
Avg pos
#9.5
1916
Points
2683
3
Robert Kallin head-to-head wins
10
Shared race starts
7
Mathias Petersen head-to-head wins
Shared races
Only races where both athletes have a stored result are shown.
2026 Ironman Texas
4/17/2026
DNF
Robert Kallin
DNF
24
Mathias Petersen
7:57:58
2025 Ironman 70.3 World Championship
11/7/2025
19
Robert Kallin
3:55:42
32
Mathias Petersen
3:59:14
2024 Ironman 70.3 Western Australia
11/30/2024
4
Robert Kallin
3:41:31
11
Mathias Petersen
3:45:01
2024 Ironman Hawaii
10/25/2024
23
Robert Kallin
8:07:25
12
Mathias Petersen
7:56:50
2024 Ironman Vitoria-Gasteiz
7/13/2024
8
Robert Kallin
7:49:05
7
Mathias Petersen
7:47:35
2023 PTO European Open
5/5/2023
21
Robert Kallin
3:25:33
20
Mathias Petersen
3:25:21
2022 Ironman Hawaii
10/6/2022
31
Robert Kallin
8:28:02
16
Mathias Petersen
8:06:44
2022 Ironman 70.3 Mallorca
5/6/2022
21
Robert Kallin
4:10:50
4
Mathias Petersen
4:00:25
2020 Ironman 70.3 Gdynia
9/5/2020
4
Robert Kallin
3:46:01
6
Mathias Petersen
3:48:01
2019 Ironman 70.3 Sweden
7/6/2019
4
Robert Kallin
3:55:11
3
Mathias Petersen
3:53:48
| Race | Robert Kallin | Mathias Petersen | Edge |
|---|---|---|---|
| 2026 Ironman Texas 4/17/2026 | DNF DNF | 24 7:57:58 | B |
| 2025 Ironman 70.3 World Championship 11/7/2025 | 19 3:55:42 | 32 3:59:14 | A |
| 2024 Ironman 70.3 Western Australia 11/30/2024 | 4 3:41:31 | 11 3:45:01 | A |
| 2024 Ironman Hawaii 10/25/2024 | 23 8:07:25 | 12 7:56:50 | B |
| 2024 Ironman Vitoria-Gasteiz 7/13/2024 | 8 7:49:05 | 7 7:47:35 | B |
| 2023 PTO European Open 5/5/2023 | 21 3:25:33 | 20 3:25:21 | B |
| 2022 Ironman Hawaii 10/6/2022 | 31 8:28:02 | 16 8:06:44 | B |
| 2022 Ironman 70.3 Mallorca 5/6/2022 | 21 4:10:50 | 4 4:00:25 | B |
| 2020 Ironman 70.3 Gdynia 9/5/2020 | 4 3:46:01 | 6 3:48:01 | A |
| 2019 Ironman 70.3 Sweden 7/6/2019 | 4 3:55:11 | 3 3:53:48 | B |