William Dai (M 54)
2024
1 Race | 31 mi.North Marin Ridge Run
Mar 2nd 2024
| Lagunitas, CA
Distance
50 KM
Overall
3
/ 25
Division (M)
3
/ 22
5:28:30
2023
8 Races | 384 mi.Quad Dipsea
Nov 25th 2023
| Mill Valley, CA
Distance
28.4 Miles
Overall
97
/ 338
Division (M)
81
/ 252
5:52:06
Ruth Anderson
Oct 14th 2023
| San Francisco, CA
Distance
50 KM
Overall
14
/ 60
Division (M)
9
/ 38
4:29:31
Dick Collins Firetrails
Sep 30th 2023
| Castro Valley, CA
Distance
50 Miles
Overall
10
/ 97
Division (M)
7
/ 62
9:28:54
Crystal Springs - Summer
Sep 3rd 2023
| Woodside, CA
Distance
50 KM
Overall
5
/ 43
Division (M)
5
/ 23
5:18:00
Tahoe Rim Trail
Jul 15th 2023
| Carson City, NV
Distance
100 Miles
Overall
24
/ 115
Division (M)
21
/ 97
27:46:39
Quicksilver
May 13th 2023
| San Jose, CA
Distance
100 KM
Overall
38
/ 99
Division (M)
31
/ 81
14:46:01
Lake Sonoma 50
Apr 8th 2023
| Healdsburg, CA
Distance
50 Miles
Overall
56
/ 214
Division (M)
35
/ 133
10:26:42
FOURmidable
Feb 18th 2023
| Cool, CA
Distance
50 KM
Overall
53
/ 209
Division (M)
40
/ 146
5:33:46
2022
4 Races | 212 mi.Rio Del Lago
Nov 5th 2022
| Granite Bay, CA
Distance
100 Miles
Overall
22
/ 194
Division (M)
17
/ 133
22:09:16
Ruth Anderson
Oct 8th 2022
| San Francisco, CA
Distance
50 KM
Overall
12
/ 54
Division (M)
8
/ 33
4:55:39
Dick Collins Firetrails
Sep 24th 2022
| Castro Valley, CA
Distance
50 Miles
Overall
19
/ 96
Division (M)
16
/ 64
10:41:45
Skyline 50K
Aug 6th 2022
| San Leandro, CA
Distance
50 KM
Overall
37
/ 197
Division (M)
29
/ 121
5:32:59
2020
4 Races | 143 mi.Pioneer Spirit 50
Mar 14th 2020
| Folsom, CA
Distance
50 Miles
Overall
27
/ 67
Division (M)
22
/ 52
9:25:22
Way Too Cool
Mar 7th 2020
| Cool, CA
Distance
50 KM
Overall
69
/ 571
Division (M)
61
/ 370
4:37:56
FOURmidable
Feb 15th 2020
| Cool, CA
Distance
50 KM
Overall
35
/ 200
Division (M)
31
/ 130
5:22:26
Jed Smith
Feb 1st 2020
| Sacramento, CA
Distance
50 KM
Overall
10
/ 60
Division (M)
8
/ 38
4:11:55
2019
13 Races | 670 mi.Quad Dipsea
Nov 30th 2019
| Mill Valley, CA
Distance
28.4 Miles
Overall
62
/ 274
Division (M)
54
/ 203
5:51:15
Ruth Anderson
Oct 12th 2019
| San Francisco, CA
Distance
100 KM
Overall
1
/ 4
Division (M)
1
/ 3
10:31:37
Dick Collins Firetrails
Oct 5th 2019
| Castro Valley, CA
Distance
50 Miles
Overall
13
/ 80
Division (M)
11
/ 57
9:39:49
Headlands
Sep 14th 2019
| Sausalito, CA
Distance
100 Miles
Overall
16
/ 48
Division (M)
13
/ 39
26:45:19
Tamalpa Headlands 50K
Aug 24th 2019
| Muir Beach, CA
Distance
50 KM
Overall
24
/ 143
Division (M)
21
/ 97
5:32:18
Tahoe Rim Trail
Jul 20th 2019
| Carson City, NV
Distance
100 Miles
Overall
77
/ 156
Division (M)
67
/ 120
31:08:53
Ohlone
May 19th 2019
| Fremont, CA
Distance
50 KM
Overall
19
/ 111
Division (M)
18
/ 88
6:27:44
Quicksilver
May 11th 2019
| San Jose, CA
Distance
100 KM
Overall
52
/ 148
Division (M)
46
/ 116
14:15:06
Miwok
May 4th 2019
| Stinson Beach, CA
Distance
100 KM
Overall
31
/ 271
Division (M)
25
/ 196
11:29:00
American River
Apr 6th 2019
| Folsom, CA
Distance
50 Miles
Overall
37
/ 363
Division (M)
30
/ 232
8:58:03
Way Too Cool
Mar 2nd 2019
| Cool, CA
Distance
50 KM
Overall
83
/ 591
Division (M)
72
/ 397
4:57:23
FOURmidable
Feb 16th 2019
| Cool, CA
Distance
50 KM
Overall
46
/ 188
Division (M)
37
/ 134
5:24:28
Jed Smith
Feb 2nd 2019
| Sacramento, CA
Distance
50 KM
Overall
14
/ 50
Division (M)
12
/ 32
4:31:02
2018
10 Races | 464 mi.Hunter S. Thompson Fear & Loathing
Dec 8th 2018
| San Francisco, CA
Distance
50 KM
Overall
18
/ 48
Division (M)
13
/ 35
6:45:00
Quad Dipsea
Nov 24th 2018
| Mill Valley, CA
Distance
28.4 Miles
Overall
52
/ 280
Division (M)
50
/ 205
5:53:23
Rio Del Lago
Nov 3rd 2018
| Granite Bay, CA
Distance
100 Miles
Overall
49
/ 251
Division (M)
46
/ 171
23:24:14
Folsom Lake Ultra Trail
Sep 15th 2018
| Auburn, CA
Distance
68.5 Miles
Overall
10
/ 47
Division (M)
9
/ 32
14:39:01
Tamalpa Headlands 50K
Aug 25th 2018
| Muir Beach, CA
Distance
50 KM
Overall
24
/ 168
Division (M)
19
/ 98
5:48:03
Silver State
May 19th 2018
| Reno, NV
Distance
50 Miles
Overall
36
/ 80
Division (M)
31
/ 64
11:01:14
Ruth Anderson
Apr 21st 2018
| San Francisco, CA
Distance
100 KM
Overall
3
/ 10
Division (M)
3
/ 9
10:29:13
Napa Valley 50k
Apr 7th 2018
| Calistoga, CA
Distance
50 KM
Overall
16
/ 51
Division (M)
14
/ 33
7:11:16
FOURmidable
Feb 17th 2018
| Cool, CA
Distance
50 KM
Overall
26
/ 149
Division (M)
21
/ 93
5:31:26
Jed Smith
Feb 3rd 2018
| Sacramento, CA
Distance
50 KM
Overall
12
/ 46
Division (M)
9
/ 32
4:24:58
2017
11 Races | 520 mi.Quad Dipsea
Nov 25th 2017
| Mill Valley, CA
Distance
28.4 Miles
Overall
75
/ 301
Division (M)
63
/ 218
6:09:14
Rio Del Lago
Nov 4th 2017
| Granite Bay, CA
Distance
100 Miles
Overall
37
/ 297
Division (M)
34
/ 218
21:37:57
Dick Collins Firetrails
Oct 7th 2017
| Castro Valley, CA
Distance
100 KM
Overall
13
/ 37
Division (M)
13
/ 32
13:27:18
Tamalpa Headlands 50K
Aug 26th 2017
| Muir Beach, CA
Distance
50 KM
Overall
35
/ 178
Division (M)
26
/ 101
6:19:30
Skyline 50K
Aug 6th 2017
| San Leandro, CA
Distance
50 KM
Overall
39
/ 196
Division (M)
34
/ 125
5:18:48
Ohlone
May 21st 2017
| Fremont, CA
Distance
50 KM
Overall
35
/ 128
Division (M)
33
/ 95
7:09:15
Quicksilver
May 13th 2017
| San Jose, CA
Distance
100 KM
Overall
32
/ 159
Division (M)
29
/ 124
12:50:23
Miwok
May 6th 2017
| Stinson Beach, CA
Distance
100 KM
Overall
65
/ 297
Division (M)
57
/ 219
12:03:11
Ruth Anderson
Apr 15th 2017
| San Francisco, CA
Distance
50 KM
Overall
5
/ 22
Division (M)
4
/ 11
4:15:38
Marin Ultra Challenge
Mar 11th 2017
| Sausalito, CA
Distance
50 Miles
Overall
17
/ 136
Division (M)
13
/ 95
9:34:05
FOURmidable
Feb 18th 2017
| Cool, CA
Distance
50 KM
Overall
52
/ 182
Division (M)
46
/ 117
5:48:43
2016
8 Races | 377 mi.Hunter S. Thompson Fear & Loathing
Dec 4th 2016
| San Francisco, CA
Distance
50 KM
Overall
13
/ 41
Division (M)
10
/ 25
6:14:09
Quad Dipsea
Nov 26th 2016
| Mill Valley, CA
Distance
28.4 Miles
Overall
75
/ 274
Division (M)
69
/ 202
6:07:30
Skyline to the Sea
Oct 8th 2016
| Saratoga, CA
Distance
50 KM
Overall
18
/ 140
Division (M)
15
/ 79
5:47:59
Tahoe Rim Trail
Jul 16th 2016
| Carson City, NV
Distance
100 Miles
Overall
18
/ 155
Division (M)
16
/ 133
25:20:58
Quicksilver
May 14th 2016
| San Jose, CA
Distance
100 KM
Overall
25
/ 165
Division (M)
21
/ 127
12:38:55
Miwok
May 7th 2016
| Stinson Beach, CA
Distance
100 KM
Overall
98
/ 289
Division (M)
86
/ 235
12:36:00
Ruth Anderson
Apr 16th 2016
| San Francisco, CA
Distance
50 KM
Overall
5
/ 32
Division (M)
4
/ 21
4:21:15
Jed Smith
Feb 6th 2016
| Sacramento, CA
Distance
50 KM
Overall
13
/ 79
Division (M)
11
/ 41
4:00:47
2015
13 Races | 658 mi.Woodside Trail Run
Dec 27th 2015
| Woodside, CA
Distance
50 KM
Overall
12
/ 70
Division (M)
12
/ 47
5:03:15
Hunter S. Thompson Fear & Loathing
Dec 6th 2015
| San Francisco, CA
Distance
50 KM
Overall
1
/ 42
Division (M)
1
/ 28
4:54:00
Quad Dipsea
Nov 28th 2015
| Mill Valley, CA
Distance
28.4 Miles
Overall
103
/ 280
Division (M)
89
/ 208
6:13:13
Dick Collins Firetrails (Inactive)
Oct 10th 2015
| Castro Valley, CA
Distance
50 Miles
Overall
33
/ 185
Division (M)
27
/ 125
9:26:56
Headlands
Sep 12th 2015
| Sausalito, CA
Distance
100 Miles
Overall
2
/ 26
Division (M)
2
/ 21
21:54:38
Tamalpa Headlands 50K
Aug 29th 2015
| Muir Beach, CA
Distance
50 KM
Overall
72
/ 220
Division (M)
61
/ 152
5:38:04
Skyline 50K
Aug 8th 2015
| San Leandro, CA
Distance
50 KM
Overall
26
/ 164
Division (M)
23
/ 116
4:58:14
San Francisco Summer Solstice
Jun 20th 2015
| San Francisco, CA
Duration
24 Hours
Overall
5
/ 59
Division (M)
5
/ 49
118.83
Silver State
May 16th 2015
| Reno, NV
Distance
50 Miles
Overall
18
/ 82
Division (M)
16
/ 64
9:23:55
Quicksilver
May 9th 2015
| San Jose, CA
Distance
100 KM
Overall
51
/ 181
Division (M)
43
/ 143
12:38:44
Ruth Anderson
Apr 19th 2015
| San Francisco, CA
Distance
100 KM
Overall
4
/ 12
Division (M)
4
/ 12
9:54:54
West Coast 50K
Feb 22nd 2015
| San Jose, CA
Distance
50 KM
Overall
4
/ 12
Division (M)
4
/ 12
5:32:28
Fremont Fat Ass 50k
Jan 31st 2015
| Fremont, CA
Distance
50 KM
Overall
3
/ 64
Division (M)
2
/ 39
4:50:00
2014
6 Races | 287 mi.Woodside Trail Run
Dec 28th 2014
| Woodside, CA
Distance
50 KM
Overall
12
/ 95
Division (M)
12
/ 67
4:54:32
Tamalpa Headlands 50K
Aug 23rd 2014
| Muir Beach, CA
Distance
50 KM
Overall
47
/ 187
Division (M)
44
/ 135
5:43:39
San Francisco Summer Solstice
Jun 21st 2014
| San Francisco, CA
Duration
24 Hours
Overall
11
/ 46
Division (M)
10
/ 29
100.79
Ohlone
May 18th 2014
| Fremont, CA
Distance
50 KM
Overall
24
/ 176
Division (M)
22
/ 136
5:55:18
Quicksilver
May 10th 2014
| San Jose, CA
Distance
50 KM
Overall
12
/ 123
Division (M)
11
/ 66
4:57:54
Ruth Anderson
Apr 19th 2014
| San Francisco, CA
Distance
100 KM
Overall
5
/ 10
Division (M)
5
/ 10
10:15:18
2013
5 Races | 174 mi.Tamalpa Headlands 50K
Aug 24th 2013
| Muir Beach, CA
Distance
50 KM
Overall
57
/ 181
Division (M)
50
/ 121
5:54:54
Skyline 50K
Aug 11th 2013
| San Leandro, CA
Distance
50 KM
Overall
47
/ 240
Division (M)
40
/ 141
5:07:44
Pacifica Trail Run
Jul 14th 2013
| Pacifica, CA
Distance
50 KM
Overall
8
/ 16
Division (M)
8
/ 14
6:09:05
Ruth Anderson
Apr 20th 2013
| San Francisco, CA
Distance
50 KM
Overall
5
/ 55
Division (M)
4
/ 31
4:17:20
San Bruno Ultramarathons
Feb 24th 2013
| Daly City, CA
Distance
50 Miles
Overall
10
/ 28
Division (M)
9
/ 21
10:55:21
North American Races
83
Races
11y 0m 9d
Longevity
3,921
Lifetime Miles
Personal Bests
50k
(42)
4:00:47
2016
50m
(11)
8:58:03
2019
100k
(13)
9:54:54
2015
100m
(8)
21:37:57
2017
24hr
(2)
118.832
2015
Distance by Year
2024
31
Miles
1 Race
2023
384
Miles
8 Races
2022
212
Miles
4 Races
2020
143
Miles
4 Races
2019
670
Miles
13 Races
2018
464
Miles
10 Races
2017
520
Miles
11 Races
2016
377
Miles
8 Races
2015
658
Miles
13 Races
2014
287
Miles
6 Races
2013
174
Miles
5 Races
