Ji-Su (김지수) Kim
Born : 1977 Cat. M45 Ultrarunner since 2017 KOR
35
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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
4
Countries visited ?FRAFranceHKGHong KongKORSouth KoreaTHAThailand
10,6%
Rank quotient ?This runner's calculation uses 35 eligible race(s): Σ(rank − 1) = 1 600; Σ finishers = 15 112. 1 600 / 15 112 × 100 = 10.59%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed35
Km — ultra races3 250 km
> 100 km14
> 160 km7
Longest race176,0 km

Km per year (ultra races)

552
4 races
2022
383
4 races
2023
733
7 races
2024
637
8 races
2025
98
2 races
2026

Race types (share of distance)

Road3,0%
Trail97,0%

Wins & podiums (ultra)

🏆 Win14
🏆 Win M14
🏅 Top 322
🏅 Top 3 M22
Longest winning streak7
Current streak1

HISTORY

35 race(s)
DateRacePerf.Rk
2026
07.06 48km KOR2nd korea 50k Chuncheon 5:49:32 h1 🏆
09.05 50km KOR2nd Busan 50K 5:37:12 h2 🥈
2025
05.12 100mi THA2nd Chiangmai Thailand by UTMB - CHIANG DAO 100 27:34:35 h24
08.11 65km KOR9th Bukhansan Dulle-gil Trail Run 6:35:13 h1 🏆
18.10 67km KOR12th TransJeju by UTMB - Jeju70K 5:36:54 h4
20.09 110km KOR7th Seoul Ultra Trail 100K 13:05:39 h2 🥈
29.06 48km KOR1st korea 50k Chuncheon 5:58:50 h1 🏆
31.05 66km KOR12th Geoje Jimaek Trail Run - 66 km 7:49:57 h1 🏆
26.04 50km KOR10th Korea 50K 5:51:00 h2 🥈
05.04 70km KOR5th Jangsu Trail - April 9:10:13 h3 🥉
2024
06.12 175km THA1st Chiangmai Thailand by UTMB - TRANS-INT 160 26:29:12 h16
09.11 52km HKG11th TransLantau 50 by UTMB 7:19:14 h11
19.10 110km KOR6th Seoul Ultra Trail 100K 13:33:44 h2 🥈
12.10 100km KOR11th TransJeju by UTMB 100 12:46:23 h7
30.08 176km FRA21ème Ultra Trail Tour du Mont Blanc 31:57:54 h253
27.04 50km KOR9th Korea 50K 5:23:04 h1 🏆
06.04 70km KOR3rd Jangsu Trail - April 8:42:51 h1 🏆
2023
07.10 52km KOR10th TransJeju by UTMB 50 12:28:20 h1119
01.09 170km FRA20ème Ultra Trail Tour du Mont Blanc 27:09:16 h78
03.06 111km KOR10th Geoje Jimaek Trail Run - 111 km 14:03:03 h1 🏆
29.04 50km KOR8th Korea 50K 6:15:27 h2 🥈
2022
09.12 171km THA3rd Thailand by UTMB - 100mi 29:35:14 h24
15.10 100km KOR4th Seoul Ultra Trail 100K 13:36:58 h2 🥈
26.08 170km FRA19ème Ultra Trail Tour du Mont Blanc 25:17:51 h51
25.06 111km KOR9th Geoje Jimaek Trail Run - 111 km 14:05:40 h1 🏆
2021
26.06 100mi KOR1st Seoul 100 Mile Endurance Run 19:54:04 h1 🏆
23.05 48km KOR27th Jirisan Flower Stalk 7:40:00 h1 🏆
2020
21.11 65km KOR7th Bukhansan Dulle-gil Trail Run 6:53:28 h1 🏆
30.10 105km KOR4th High Trail Nine Peaks - 8 Peaks 18:24:49 h1 🏆
15.08 48km KOR26th Jirisan Flower Stalk 8:13:00 h1 🏆
2019
28.09 111km KOR7th Geoje Jimaek Trail Run - 111 km 17:12:16 h1 🏆
21.04 80km KOR5th Korea 80K 12:15:03 h4
2018
20.10 111km KOR6th Transjeju Int. Trail Run 100 16:24:40 h9
15.08 48km KOR22th The Great Power of Geographical Day Trailwalk 8:36:00 h2 🥈
2017
03.06 70km KOR5th Geoje Jimaek Trail Run - 70 km 9:48:00 h4