Di (宋镝) Song
ID 1552291
Born : 1977 Cat. M45 Ultrarunner since 2020 CHN
30
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
33
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
8
Countries visited ?CHNChinaESPSpainHKGHong KongJPNJapanMRIMauritiusNZLNew ZealandTHAThailandUSAUnited States
69,7%
Rank quotient ?This runner's calculation uses 30 eligible race(s): Σ(rank − 1) = 15 406; Σ finishers = 22 116. 15 406 / 22 116 × 100 = 69.66%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed30
Km — ultra races1 754 km
Longest race100,0 km
8th GZ100 Guangzhou - 100 km Run — 17/1/2026

Km per year (ultra races)

110
2 races
2022
386
6 races
2023
506
9 races
2024
366
7 races
2025
151
2 races
2026

Race types (share of distance)

Trail100,0%

Records

50 km7h57'33100 km27h22'40

HISTORY

30 race(s)
DateRacePerf.Rk
2026
14.03 51km CHN2nd Ultra-Trail Xiamen by UTMB - 50K 12:11:12 h1002
17.01 100km CHN8th GZ100 Guangzhou - 100 km Run 27:41:45 h821
2025
06.12 48km THA2nd Chiangmai Thailand by UTMB - HMONG 50-DAY 10:41:59 h1069
11.10 50km USA15th Kodiak Ultra Marathons by UTMB - 50K 7:57:33 h378
03.08 50km CHN1st Liupanshui-Trailrunning 12:12:58 h292
21.06 58km JPN1st Kaga Spa by UTMB - Kaga Spa Trail Endurance 50 12:42:47 h517
15.06 55km CHN1st Chandon Himalaya Extreme Trail Running 11:56:34 h97
17.05 53.8km CHN1st Ultra-Trail Great Wall by UTMB - 50K 9:38:08 h704
15.03 51km CHN3rd TransDapeng100 - Challenge Group 17:00:00 h247
2024
19.10 60km CHN10th Ninghai Ultra Trail - 50km 13:06:57 h1257
21.07 59km CHN1st Cftt Shennongjia Mountain Trail Race 18:30:00 h206
04.07 55km ESPVal d'Aran by UTMB - Peades d'Aigua 12:11:18 h1402
22.06 58.5km MRI1st Mauritius by UTMB - Bel Ombre 11:54:34 h219
25.05 50km CHN12th DL50 Ultra Endurance Race 10:56:46 h372
20.04 48.3km CHN6th Yunqiu Mountain Trail - MMY 50K 9:25:10 h620
14.04 60km CHN9th Jiangnan 100 Ultra Trail - 60km 12:25:08 h201
17.02 51.4km NZL9th Tarawera 50 km Ultramarathon 8:18:03 h1111
20.01 64km CHN6th GZ100 Guangzhou - 60 km Run 14:59:47 h515
2023
09.12 50km THA4th Doi Inthanon Thailand by UTMB - HMONG 50 10:59:32 h823
04.11 100km CHN8th Wuyishan Trail Race 100 km 27:22:40 h316
17.09 67.3km CHN3rd Ultra Trail Shennongjia 65 km Salt Road Challenge 18:23:56 h822
12.08 55km CHN1st Ruoergai National Park Skyline Off-Road 10:52:25 h268
15.04 57.4km CHN9th Ninghai Ultra Trail - 50km 12:33:54 h852
18.02 56km HKG13th Hong Kong 100 Ultra Trail Race - Half 12:00:59 h370
2022
26.11 60km CHN7th Wuyishan Trail Race 60 km 14:06:47 h32
23.10 50km CHN1st Xiamen Tiefeng Mountain Trail 12:24:07 h102
2021
31.10 50km CHN2nd Xiamen Aoxi Mountain Trail 10:55:40 h51
15.05 50km CHN2nd Danxia Trail Runing Race - 50 km 11:33:23 h346
16.04 85km CHN7th Jiangnan 100 Ultra Trail - 85km 18:31:57 h235
2020
05.12 50km CHN4th China 100 mountain cross - 50 km Yangshuo 10:25:58 h189