Wai-Thing Law

Born : 1973 Cat. W50 Ultrarunner since 2015

DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.

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

Countries visited ?

Malaysia

Philippines

Singapore

Thailand

31,2%

Rank quotient ?This runner's calculation uses 78 eligible race(s): Σ(rank − 1) = 2 719; Σ finishers = 8 720. 2 719 / 8 720 × 100 = 31.18%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed78

Km — ultra races6 402 km

> 100 km9

> 160 km3

> 24h2

Longest race168,0 km

10th Route 68 Challenge - 168 km — 22/2/2025

Km per year (ultra races)

818

2022

1 112

2023

812

2024

1 360

2025

689

2026

Race types (share of distance)

Road52,6%

Trail47,4%

Wins & podiums (ultra)

🏆 Win0

🏆 Win F8

🏅 Top 32

🏅 Top 3 F32

Longest winning streak0

Current streak0

Records

50 km6h03'36 100 km13h07'32 100 mi29h39'11 12 h86,00 km 24 h130,59 km

HISTORY

78 race(s)

Date		Race	Perf.	Rk
2026
15.08	100km	8th Langkawi 100 km Ultra Marathon	16:07:48 h	38
04.07	100km	4th Semenyih Ultra 100km	15:20:14 h	30
26.06	100km	2nd Kedah Ultra 100km	16:48:26 h	12
20.06	60km	1st Sintok Trail Xperience	16:50:29 h	62
09.05	24h	3rd Melaka 24H Ultramarathon	129.086 km	15
01.05	100km	5th Merapoh Rainforest Trail - 100 km	19:59:26 h	77
07.02	100km	11th Route 68 Challenge - 100 km	16:38:30 h	66
2025
06.12	48km	2nd Chiangmai Thailand by UTMB - HMONG 50-NIGHT	11:52:56 h	130
01.11	100km	6th Sekinchan Ultra 100km	17:18:37 h	52
26.10	50km	3rd Angsi Forest Challenge	15:33:35 h	38
11.10	50km	1st Bukit Kledang Ultra Challenge	19:42:26 h	10
20.09	66km	4th Himalaya Sports TransNaning Ultra Challenge 68km	24:06:11 h	30
13.09	50km	4th Muallim Ultra	9:38:38 h	15
06.09	100km	3rd Pahang Ultra	16:40:59 h	30
15.08	103km	3rd Magnificent Baling 100	20:26:14 h	118
19.07	59.3km	9th Cameron 60 km Ultra Trail	12:21:36 h	131
12.07	14h	3rd Wang Gunung Trail	55.000 km	9
21.06	100km	7th Langkawi 100 km Ultra Marathon	15:34:58 h	29
14.06	12h	4th Run For It X 12 Hour Challenge	70.500 km	10
31.05	60km	5th Hulu Selangor Ultra Trail	12:22:00 h	30
10.05	24h	2nd Melaka 24H Ultramarathon	130.587 km	5
26.04	50km	1st Kailas Penang Skyrace	12:40:35 h	75
22.02	168km	10th Route 68 Challenge - 168 km	27:29:58 h	9
18.01	100km	3rd Semenyih Ultra 100km	16:01:25 h	26
2024
29.12	12h	13th MR25 Cross Country Ultra Marathon Closed	73.500 km	7
08.12	50km	2nd Nakawan Ultra	9:15:13 h	30
09.11	100km	5th Sekinchan Ultra 100km	16:28:03 h	42
21.09	50km	3rd Camelbak Ultra Trail	11:58:33 h	12
03.08	60km	2nd Wang Gunung Trail	10:59:20 h	21
25.05	100km	6th Langkawi 100 km Ultra Marathon	17:24:27 h	31
02.03	168km	9th Route 68 Challenge - 168 km	28:35:24 h	22
17.02	60km	1st Bukit Lagong Challenge	18:16:19 h	19
03.02	100km	2nd Semenyih Ultra 100km	14:50:01 h	22
07.01	12h	6th Bukit Kiara Ultra Challenge	50.000 km	26
2023
31.12	60km	1st USM Ultra	11:11:22 h	24
09.12	12h	1st Sireh Park Ultra	59.500 km	10
18.11	12h	6th Universiti Malaya 12 hours Ultra Marathon night run	85.343 km	3 🥉
11.11	12h	1st Balik Pulau Endurance Fiesta	70.000 km	5
28.10	75km	2nd Perlis Ultra Marathon 75km	11:40:03 h	17
21.10	100km	4th Sekinchan Ultra 100km	15:50:38 h	14
16.09	50km	2nd Camelbak Ultra Trail	7:02:25 h	15
29.07	66km	2nd Himalaya Sports TransNaning Ultra Challenge 68km	22:36:28 h	24
02.07	52km	1st Bukit Kiara X	13:10:11 h	31
27.05	100km	1st Semenyih Ultra 100km	17:13:49 h	12
06.05	100km	5th Langkawi 100 km Ultra Marathon	15:46:38 h	42
04.03	168km	8th Route 68 Challenge - 168 km	26:51:37 h	7
12.02	12h	8th Gunung Nuang Endurance 12 hour Run	60.000 km	21
08.01	12h	5th Bukit Kiara Ultra Challenge	66.500 km	20
2022
10.12	55km	3rd Thailand by UTMB - 55km	11:53:55 h	380
03.12	100km	2nd Highland Ultra Challenge 100km	14:37:01 h	6
22.10	100km	3rd Sekinchan Ultra 100km	14:40:19 h	26
08.10	62km	4th Ultimate Trails of Penang 60 km	15:13:07 h	35
01.10	101km	10th Craze Ultra 101 km	17:29:00 h	12
03.09	50km	1st Kailas Perak Ultra 50km	6:03:36 h	13
28.08	50km	3rd T8 Jagoi Heritage Trail Run	8:28:30 h	33
02.07	100km	1st Route19 Ultra 100km	13:11:59 h	15
25.06	100km	1st Merapoh Rainforest Trail - 100 km	17:44:08 h	9
21.05	100km	7th Route 68 Challenge - 100 km	13:07:32 h	17
2020
15.02	12h	5th Garang Warrior Ultra 12 Hour Run	76.000 km	15
08.02	50km	1st Ultimate Trails of the South	12:58:34 h	43
2019
29.12	12h	11th MR25 Cross Country Ultra Marathon	52.500 km	56
12.10	50km	2nd Denai Ultra Sungkai	8:01:54 h	12
24.08	100km	5th The Magnificent Merapoh Trail (TMMT) 100 km	18:04:58 h	89
20.04	100km	5th Route 68 Challenge - 100 km	14:00:47 h	34
13.04	12h	7th Bedok Reservoir 12 hour Ultramarathon	77.400 km	12
2018
30.11	70km	1st Malaysia Mountain Trail Festival	22:20:48 h	153
10.11	97.7km	4th Pong Yaeng 100 km Trail	19:57:40 h	69
11.08	70km	4th The Magnificent Merapoh Trail (TMMT) 70 km	10:49:30 h	18
21.04	12h	6th Bedok Reservoir 12 hour Ultramarathon	86.000 km	3 🥉
03.03	160km	8th BDM 160K Ultramarathon Race	29:39:11 h	30
27.01	102km	10th BDM 102K Ultramarathon Race	14:35:09 h	35
13.01	12h	3rd Garang Warrior Ultra 12 Hour Run	84.000 km	11
2017
30.12	12h	9th MR25 Cross Country Ultra Marathon	73.500 km	19
26.08	60km	The Greenrace Forest 60	8:43:26 h	35
20.05	12h	2nd Garang Warrior Ultra 12 Hour Run	72.000 km	12
2016
18.12	12h	8th MR25 Cross Country Ultra Marathon	73.500 km	27
2015
27.12	12h	7th MR25 Cross Country Ultra Marathon	84.000 km	30
03.01	12h	6th MR25 Cross Country Ultra Marathon	72.450 km	24

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	22/2/2025	10th Route 68 Challenge - 168 km	168,00	×2
✓ 2	2/3/2024	9th Route 68 Challenge - 168 km	168,00	×2
✓ 3	4/3/2023	8th Route 68 Challenge - 168 km	168,00	×2
✓ 4	3/3/2018	8th BDM 160K Ultramarathon Race	160,00	×2
✓ 5	10/5/2025	2nd Melaka 24H Ultramarathon	130,59	×2
✓ 6	9/5/2026	3rd Melaka 24H Ultramarathon	129,09	×2
✓ 7	15/8/2025	3rd Magnificent Baling 100	103,00	×1
✓ 8	27/1/2018	10th BDM 102K Ultramarathon Race	102,00	×1
✓ 9	1/10/2022	10th Craze Ultra 101 km	101,00	×1
✓ 10	15/8/2026	8th Langkawi 100 km Ultra Marathon	100,00	×1
✓ 11	4/7/2026	4th Semenyih Ultra 100km	100,00	×1
✓ 12	26/6/2026	2nd Kedah Ultra 100km	100,00	×1
✓ 13	1/5/2026	5th Merapoh Rainforest Trail - 100 km	100,00	×1
✓ 14	7/2/2026	11th Route 68 Challenge - 100 km	100,00	×1
✓ 15	1/11/2025	6th Sekinchan Ultra 100km	100,00	×1
✓ 16	6/9/2025	3rd Pahang Ultra	100,00	×1
✓ 17	21/6/2025	7th Langkawi 100 km Ultra Marathon	100,00	×1
✓ 18	18/1/2025	3rd Semenyih Ultra 100km	100,00	×1
✓ 19	9/11/2024	5th Sekinchan Ultra 100km	100,00	×1
✓ 20	25/5/2024	6th Langkawi 100 km Ultra Marathon	100,00	×1
✓ 21	3/2/2024	2nd Semenyih Ultra 100km	100,00	×1
✓ 22	21/10/2023	4th Sekinchan Ultra 100km	100,00	×1
✓ 23	27/5/2023	1st Semenyih Ultra 100km	100,00	×1
✓ 24	6/5/2023	5th Langkawi 100 km Ultra Marathon	100,00	×1
✓ 25	3/12/2022	2nd Highland Ultra Challenge 100km	100,00	×1
✓ 26	22/10/2022	3rd Sekinchan Ultra 100km	100,00	×1
✓ 27	2/7/2022	1st Route19 Ultra 100km	100,00	×1
✓ 28	25/6/2022	1st Merapoh Rainforest Trail - 100 km	100,00	×1
✓ 29	21/5/2022	7th Route 68 Challenge - 100 km	100,00	×1
✓ 30	24/8/2019	5th The Magnificent Merapoh Trail (TMMT) 100 km	100,00	×1
✓ 31	20/4/2019	5th Route 68 Challenge - 100 km	100,00	×1
✓ 32	10/11/2018	4th Pong Yaeng 100 km Trail	97,70	×1
✓ 33	21/4/2018	6th Bedok Reservoir 12 hour Ultramarathon	86,00	×1
✓ 34	18/11/2023	6th Universiti Malaya 12 hours Ultra Marathon night run	85,34	×1
✓ 35	13/1/2018	3rd Garang Warrior Ultra 12 Hour Run	84,00	×1
✓ 36	27/12/2015	7th MR25 Cross Country Ultra Marathon	84,00	×1
✓ 37	13/4/2019	7th Bedok Reservoir 12 hour Ultramarathon	77,40	×1
✓ 38	15/2/2020	5th Garang Warrior Ultra 12 Hour Run	76,00	×1
✓ 39	28/10/2023	2nd Perlis Ultra Marathon 75km	75,00	×1
✓ 40	29/12/2024	13th MR25 Cross Country Ultra Marathon Closed	73,50	×1
✓ 41	30/12/2017	9th MR25 Cross Country Ultra Marathon	73,50	×1
✓ 42	18/12/2016	8th MR25 Cross Country Ultra Marathon	73,50	×1
✓ 43	3/1/2015	6th MR25 Cross Country Ultra Marathon	72,45	×1
✓ 44	20/5/2017	2nd Garang Warrior Ultra 12 Hour Run	72,00	×1
✓ 45	14/6/2025	4th Run For It X 12 Hour Challenge	70,50	×1
✓ 46	11/11/2023	1st Balik Pulau Endurance Fiesta	70,00	×1
✓ 47	30/11/2018	1st Malaysia Mountain Trail Festival	70,00	×1
✓ 48	11/8/2018	4th The Magnificent Merapoh Trail (TMMT) 70 km	70,00	×1
✓ 49	8/1/2023	5th Bukit Kiara Ultra Challenge	66,50	×1
✓ 50	20/9/2025	4th Himalaya Sports TransNaning Ultra Challenge 68km	66,00	×1
✓ 51	29/7/2023	2nd Himalaya Sports TransNaning Ultra Challenge 68km	66,00	×1
✓ 52	8/10/2022	4th Ultimate Trails of Penang 60 km	62,00	×1
✓ 53	20/6/2026	1st Sintok Trail Xperience	60,00	×1
✓ 54	31/5/2025	5th Hulu Selangor Ultra Trail	60,00	×1
✓ 55	3/8/2024	2nd Wang Gunung Trail	60,00	×1
✓ 56	17/2/2024	1st Bukit Lagong Challenge	60,00	×1
✓ 57	31/12/2023	1st USM Ultra	60,00	×1
✓ 58	12/2/2023	8th Gunung Nuang Endurance 12 hour Run	60,00	×1
✓ 59	26/8/2017	The Greenrace Forest 60	60,00	×1
60	9/12/2023	1st Sireh Park Ultra	59,50	—
61	19/7/2025	9th Cameron 60 km Ultra Trail	59,30	—
62	12/7/2025	3rd Wang Gunung Trail	55,00	—
63	10/12/2022	3rd Thailand by UTMB - 55km	55,00	—
64	29/12/2019	11th MR25 Cross Country Ultra Marathon	52,50	—
65	2/7/2023	1st Bukit Kiara X	52,00	—
66	26/10/2025	3rd Angsi Forest Challenge (AFC)	50,00	—
67	11/10/2025	1st Bukit Kledang Ultra Challenge	50,00	—
68	13/9/2025	4th Muallim Ultra	50,00	—
69	26/4/2025	1st Kailas Penang Skyrace	50,00	—
70	8/12/2024	2nd Nakawan Ultra	50,00	—
71	21/9/2024	3rd Camelbak Ultra Trail	50,00	—
72	7/1/2024	6th Bukit Kiara Ultra Challenge	50,00	—
73	16/9/2023	2nd Camelbak Ultra Trail	50,00	—
74	3/9/2022	1st Kailas Perak Ultra 50km	50,00	—
75	28/8/2022	3rd T8 Jagoi Heritage Trail Run	50,00	—
76	8/2/2020	1st Ultimate Trails of the South	50,00	—
77	12/10/2019	2nd Denai Ultra Sungkai	50,00	—
78	6/12/2025	2nd Chiangmai Thailand by UTMB - HMONG 50-NIGHT	48,00	—