Mary Kwiatkowski
External sources
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Born : 1994
Cat. W23 Ultrarunner since 2021
13
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
25
DUV-index+ ?Largest integer N such that the race distances provide at least N complete segments of N km in total. A single long race may therefore contribute several segments. See the DUV-Index tab for the detailed calculation. calculation details
1
Countries visited ?United States
United States79,4%
Rank quotient ?This runner's calculation uses 13 eligible race(s): Σ(rank − 1) = 936; Σ finishers = 1 179. 936 / 1 179 × 100 = 79.39%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed13
Km — ultra races848 km
> 100 km2
> 24h6
> 48h3
Longest race107,3 km
2nd MAD Backyard Ultra — 21/1/2023
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail40,7%
Elim.59,3%
Wins & podiums (ultra)
🏆 Win0
🏆 Win F0
🏅 Top 30
🏅 Top 3 F2
Longest winning streak0
Current streak0
Records
HISTORY
13 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 01.08 | 30mi | 12th Jarmans Invitational Marathon |
8:47:09 h | 48 |
| 28.03 | Backyard Ultra | 7th Capital Backyard Ultra |
100.590 km (15h) | 40 |
| 2025 | ||||
| 18.01 | Backyard Ultra | 4th MAD Backyard Ultra |
87.178 km (13h) | 38 |
| 2024 | ||||
| 25.05 | Backyard Ultra | 5th Capital Backyard Ultra |
67.060 km (10h) | 36 |
| 01.03 | Backyard Ultra | 4th Queeny Backyard Ultra |
80.472 km (12h) | 51 |
| 2023 | ||||
| 05.08 | 30mi | 9th Jarmans Invitational Marathon |
8:31:08 h | 50 |
| 18.02 | 50km | 28th Holiday Lake 50K++ |
6:59:45 h | 101 |
| 21.01 | Backyard Ultra | 2nd MAD Backyard Ultra |
107.296 km (16h) | 12 |
| 2022 | ||||
| 15.10 | Backyard Ultra | 2nd Andy’s Backyard Ultra |
60.354 km (9h) | 30 |
| 13.08 | 30mi | 8th Jarmans Invitational Marathon |
8:00:38 h | 51 |
| 23.04 | 50km | 22th Promise Land 50K++ |
9:32:35 h | 263 |
| 19.02 | 50km | 27th Holiday Lake 50K++ |
6:58:28 h | 133 |
| 2021 | ||||
| 13.02 | 50km | 26th Holiday Lake 50K++ |
7:38:04 h | 96 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 21/1/2023 | 2nd MAD Backyard Ultra | 107,30 | ×4 |
| ✓ 2 | 28/3/2026 | 7th Capital Backyard Ultra | 100,59 | ×4 |
| ✓ 3 | 18/1/2025 | 4th MAD Backyard Ultra | 87,18 | ×3 |
| ✓ 4 | 1/3/2024 | 4th Queeny Backyard Ultra | 80,47 | ×3 |
| ✓ 5 | 25/5/2024 | 5th Capital Backyard Ultra | 67,06 | ×2 |
| ✓ 6 | 15/10/2022 | 2nd Andy’s Backyard Ultra | 60,35 | ×2 |
| ✓ 7 | 18/2/2023 | 28th Holiday Lake 50K++ | 50,00 | ×2 |
| ✓ 8 | 23/4/2022 | 22th Promise Land 50K++ | 50,00 | ×2 |
| ✓ 9 | 19/2/2022 | 27th Holiday Lake 50K++ | 50,00 | ×2 |
| ✓ 10 | 13/2/2021 | 26th Holiday Lake 50K++ | 50,00 | ×2 |
| ✓ 11 | 1/8/2026 | 12th Jarmans Invitational Marathon | 48,28 | ×1 |
| ✓ 12 | 5/8/2023 | 9th Jarmans Invitational Marathon | 48,28 | ×1 |
| ✓ 13 | 13/8/2022 | 8th Jarmans Invitational Marathon | 48,28 | ×1 |