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| Name: | Cao, Siyan |
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| Club: | |||
| Residence: | San Francisco, CA | ||
| Year of birth: | 1985 | (Cat. german: M40) | |
| Date of birth: | 07.04.1985 | (Cat. internat.: M40) | |
| Nationality: | USA  |
United States | |
| RunnerID: | 1039638 | ||
49 search results (49 Events, 3374.674 km). (More)
| 2026 | 1 Event, 64.373 km (More) | ||||
|---|---|---|---|---|---|
| 17.01.2026 | Fierce Dragon Flintstrike 40 (USA) | 40mi | |||
| 9:17:00 h | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M40: 1 |
| 2025 | 9 Events, 669.924 km (More) | ||||
| 27.12.2025 | Jupiter Ridge Sand Spur 50k (USA) | 50km | |||
| 4:38:45 h | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M40: 1 |
| 06.12.2025 | The Tennessee Mile 12 Hour Run (USA) | 12h | |||
| 77.892 km | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M40: 1 |
| 22.-23.11.2025 | Fall Creek 100K (USA) | 100km | |||
| 12:12:58 h | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M40: 1 |
| 18.10.2025 | Rule the Roost (USA) | 12h | |||
| 96.560 km | Cao, Siyan | *Chesterfield, MO | Overall: 2 | M: 1 | Cat M40: 1 |
| 27.-28.09.2025 | Midwest Everest 50 Mile Race (USA) | 50mi | |||
| 11:37:39 h | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M40: 1 |
| 03.05.2025 | Run for Kids 12 Hour Challenge (USA) | 12h | |||
| 92.585 km | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M40: 1 |
| 01.03.2025 | Music City Trail Ultra (USA) | 50km | |||
| 5:23:23 h | Cao, Siyan | *Chesterfield, MO | Overall: 3 | M: 3 | Cat M35: 1 |
| 01.02.2025 | Black Toe 12 Hour Run (USA) | 12h | |||
| 72.420 km | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M35: 1 |
| 18.01.2025 | David's Trail Endurance Run (USA) | 50km | |||
| 5:53:39 h | Cao, Siyan | *Chesterfield, MO | Overall: 3 | M: 2 | Cat M35: 1 |
| 2024 | 9 Events, 647.617 km (More) | ||||
| 07.12.2024 | Fall Creek 50 (USA) | 50mi | |||
| 9:42:29 h | Cao, Siyan | *Chesterfield, MO | Overall: 2 | M: 2 | Cat M35: 1 |
| 09.11.2024 | Thunderbird 100km Trail Run (USA) | 100km | |||
| 13:30:20 h | Cao, Siyan | *Chesterfield, MO | Overall: 4 | M: 3 | Cat M35: 1 |
| 14.09.2024 | Peak to Creek (USA) | 50km | |||
| 5:37:00 h | Cao, Siyan | Overall: 1 | M: 1 | Cat M35: 1 | |
| 27.-28.07.2024 | Maah Daah Hey 50 Mile Trail Run (USA) | 54mi | |||
| 13:08:40 h | Cao, Siyan | *Chesterfield, MO | Overall: 4 | M: 3 | Cat M35: 1 |
| 01.06.2024 | Crater 50km Trail Run - Driftless Discovery (USA) | 50km | |||
| 5:23:29 h | Cao, Siyan | *Chesterfield, MO | Overall: 7 | M: 7 | Cat M35: 3 |
| 20.04.2024 | The Phoenix Trail Fest 62 Miles (USA) | 62miles | |||
| 11:44:00 h | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M35: 1 |
| 30.03.2024 | Bourbon Country (USA) | 50km | |||
| 5:06:13 h | Cao, Siyan | *Chesterfield, MO | Overall: 2 | M: 2 | Cat M35: 1 |
| 03.02.2024 | Black Toe 12 Hour Run (USA) | 12h | |||
| 80.467 km | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M35: 1 |
| 20.01.2024 | David's Trail Endurance Run (USA) | 50km | |||
| 6:08:13 h | Cao, Siyan | *Chesterfield, MO | Overall: 3 | M: 3 | Cat M35: 1 |
| 2023 | 10 Events, 649.488 km (More) | ||||
| 09.12.2023 | Spirit of Syllamo 35 Mile (USA) | 35mi | |||
| 6:27:30 h | Cao, Siyan | *Chesterfield, MO | Overall: 2 | M: 2 | Cat M35: 1 |
| 18.11.2023 | Fall Creek 50 (USA) | 50mi | |||
| 9:25:25 h | Cao, Siyan | *Chesterfield, MO | Overall: 4 | M: 4 | Cat M35: 2 |
| 05.11.2023 | Autumn Squatch 50km Race (USA) | 50km | |||
| 5:12:01 h | Cao, Siyan | Overall: 3 | M: 3 | Cat M35: 1 | |
| 14.10.2023 | Indiana Trail 75 Mile (USA) | 75mi | |||
| 14:37:09 h | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M35: 1 |
| 08.07.2023 | Cry Me A River 50 Km Trail Run (USA) | 50km | |||
| 7:01:23 h | Cao, Siyan | *Chesterfield, IL | Overall: 4 | M: 4 | Cat M35: 3 |
| 30.04.2023 | I Double Ogg Dare You 6HR run (USA) | 6h | |||
| 58.419 km | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M35: 1 |
| 15.04.2023 | Ozarks Foothills 50M (USA) | 50mi | |||
| 9:35:45 h | Cao, Siyan | *Chesterfield, MO | Overall: 2 | M: 2 | Cat M35: 2 |
| 04.03.2023 | Ozark Highlands Endurance Run (USA) | 50km | |||
| 5:40:55 h | Cao, Siyan | *Chesterfield, MO | Overall: 6 | M: 6 | Cat M35: 2 |
| 11.02.2023 | Los Lobos Six Hour Challenge (USA) | 6h | |||
| 53.108 km | Cao, Siyan | *Chesterfield, MO | Overall: 5 | M: 4 | Cat M35: 2 |
| 14.01.2023 | Swamp Stomper 50K (USA) | 50km | |||
| 5:00:49 h | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M35: 1 |
| 2022 | 8 Events, 521.868 km (More) | ||||
| 17.12.2022 | Lookout Mountain 50 Mile Race (USA) | 50mi | |||
| 9:29:54 h | Cao, Siyan | *Chesterfield, MO | Overall: 9 | M: 9 | Cat M35: 4 |
| 03.-04.12.2022 | Crooked Creek Ultra Trail Race 50mi (USA) | 50mi | |||
| 9:30:38 h | Cao, Siyan | *Chesterfield, MO | Overall: 2 | M: 2 | Cat M35: 1 |
| 19.11.2022 | Duncan Ridge Trail 50 km Race (USA) | 50km | |||
| 7:36:00 h | Cao, Siyan | *Chesterfield, MO | Overall: 8 | M: 7 | Cat M35: 2 |
| 05.11.2022 | Natchez Trace Trail Run (USA) | 50mi | |||
| 9:09:56 h | Cao, Siyan | *Chesterfield, MO | Overall: 2 | M: 2 | Cat M35: 1 |
| 22.10.2022 | Tecumseh Trail Marathon (USA) | 50km | |||
| 5:41:53 h | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M35: 1 |
| 08.10.2022 | Rock Bridge Revenge 50 km Race (USA) | 50km | |||
| 4:39:41 h | Cao, Siyan | *Chesterfield, MO | Overall: 4 | M: 4 | Cat M35: 2 |
| 02.04.2022 | Rim Runner 50 Mile Trail Race (USA) | 50mi | |||
| 9:50:56 h | Cao, Siyan | *Chesterfield, MO | Overall: 2 | M: 2 | Cat M35: 1 |
| 13.02.2022 | White Rock Classic 50K (USA) | 50km | |||
| 4:25:29 h | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M35: 1 |
| 2021 | 5 Events, 331.351 km (More) | ||||
| 04.-05.12.2021 | Crooked Creek Ultra Trail Race 50mi (USA) | 50mi | |||
| 10:54:16 h | Cao, Siyan | Overall: 4 | M: 4 | Cat M35: 1 | |
| 06.11.2021 | Razorback Running Revival 50M (USA) | 50mi | |||
| 12:39:00 h | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M35: 1 |
| 16.10.2021 | DeClue Loops 50 km Trail Race (USA) | 50km | |||
| 5:20:02 h | Cao, Siyan | *Chesterfield, MO | Overall: 1 | M: 1 | Cat M35: 1 |
| 18.09.2021 | Rockin Rockwoods Trail Race (USA) | 53km | |||
| 5:57:24 h | Cao, Siyan | *Chesterfield, MO | Overall: 3 | M: 3 | Cat M35: 1 |
| 17.07.2021 | Get Your Butt Kicked 6 Hour Race (USA) | 6h | |||
| 67.417 km | Cao, Siyan | *Chesterfield, MO | Overall: 2 | M: 2 | Cat M35: 2 |
| 2020 | 1 Event, 48.441 km (More) | ||||
| 08.02.2020 | Beulah Challenge 9 Hour Race (USA) | 9h | |||
| 48.441 km | Cao, Siyan | *Clayton, MO | Overall: 23 | M: 14 | Cat M23: 3 |
| 2019 | 3 Events, 261.145 km (More) | ||||
| 07.12.2019 | Jackson County 50-50 Ultra-marathon - 50 Mile (USA) | 50mi | |||
| 8:51:58 h | Cao, Siyan | *Clayton, MO | Overall: 1 | M: 1 | Cat M23: 1 |
| 26.10.2019 | Tecumseh Trail Marathon (USA) | 50km | |||
| 5:15:09 h | Cao, Siyan | *Clayton, MO | Overall: 5 | M: 5 | Cat M23: 3 |
| 05.-06.01.2019 | New Years One Day 24 Hour Run (USA) | 24h | |||
| 130.678 km | Cao, Siyan | *San Francisco, CA | Overall: 9 | M: 7 | Cat M23: 3 |
| 2018 | 2 Events, 130.467 km (More) | ||||
| 03.06.2018 | Big Basin - Skyline to the Sea 50 Km (USA) | 50km | |||
| 4:13:30 h | Cao, Siyan | *San Francisco, CA | Overall: 4 | M: 4 | Cat M23: 3 |
| 14.04.2018 | Lake Sonoma 50 Mile Race (USA) | 50mi | |||
| 9:36:32 h | Cao, Siyan | *San Francisco, CA | Overall: 72 | M: 57 | Cat M23: 28 |
| 2017 | 1 Event, 50 km (More) | ||||
| 09.12.2017 | Rodeo Beach 50km (USA) | 50km | |||
| 5:37:21 h | Cao, Siyan | *San Francisco, CA | Overall: 18 | M: 14 | Cat M23: 8 |
Personal bests
Your list of personal best performances only contains performances of races which can be included into rankings.
In brackets rank in yearly international/national rankings.
| PB | 2026 | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
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| 50mi | 9:30:38 |
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9:30:38
(470/169) |
10:54:16
(726/298) |
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| 24h | 130.678 |
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130.678
(1884/242) |
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Comparison table
Comparison of performances in races with multiple participations
| 2026 | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Fall Creek 50 | 2 | 9:42:29 | 9:25:25 | ||||||||
| Crooked Creek Ultra Trail Race 50mi | 2 | 9:30:38 | 10:54:16 | ||||||||
| Tecumseh Trail Marathon | 2 | 5:41:53 | 5:15:09 | ||||||||
| David's Trail Endurance Run | 2 | 5:53:39 | 6:08:13 | ||||||||
| Black Toe 12 Hour Run | 2 | 72.420 | 80.467 |