Jim Kerse
ID 40873
Born : 1948 Cat. M75 Ultrarunner since 1979 NZL
43
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
60
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 ?AUSAustraliaCANCanadaNZLNew ZealandUSAUnited States
77,8%
Rank quotient ?This runner's calculation uses 43 eligible race(s): Σ(rank − 1) = 4 167; Σ finishers = 5 359. 4 167 / 5 359 × 100 = 77.76%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed43
Km — ultra races5 022 km
> 100 km19
> 160 km17
> 200 km2
> 24h5
> 48h4
Longest race331,8 km
NZ 6 Day Ultra Marathon - 6 Day — 29/9/2025

Km per year (ultra races)

2022
2023
329
1 race
2024
332
1 race
2025
2026

Race types (share of distance)

Road35,5%
Trail64,5%

Wins & podiums (ultra)

🏆 Win1
🏆 Win M1
🏅 Top 33
🏅 Top 3 M3
Longest winning streak1
Current streak0

Records

50 km6h35'34100 km8h33'4550 mi6h20'12100 mi25h45'3812 h90,55 km24 h149,20 km6 d331,84 km

HISTORY

43 race(s) · 8 split(s) nested
DateRacePerf.Rk
2025
29.09 6d NZLNZ 6 Day Ultra Marathon - 6 Day 331.839 km18
2024
29.09 6d AUSAustralian 6 day - 6 Day 329.406 km26
2017
31.08 83h USA3rd A Race for the Ages 180.246 km47
20.05 50km NZLThe Old Forest Hanmer 100 - 50 km 8:46:42 h13
2015
06.11 100mi NZL9th Taranaki Steelformers Around the Mountain 100 Mile Run 30:15:42 h10
2014
27.08 50km NZLGreat Naseby Water 50 km Race 8:05:00 h28
2013
23.02 52km NZL3rd Bedrock50 Ultra 10:36:52 h65
2012
01.12 60km NZL25th Kepler Challenge Mountain Run 11:23:43 h451
24.03 50km NZL2nd Northburn Station 50 km Mountain Run 10:22:00 h26
2011
03.12 60km NZL24th Kepler Challenge Mountain Run 10:30:04 h424
27.08 50km NZLGreat Naseby Water 50 km Race 6:48:19 h17
2010
04.09 72h USA1st Silverton 72 hour Challenge 162.543 km2 🥈
28.08 100mi USA6th Lean Horse Ultra-Marathon 100 Mile 28:35:00 h80
06.08 100mi CAN10th Stormy 100-Mile 30:33:00 h13
29.05 100mi CAN18th Sulphur Springs Trail Run 100mi 28:41:37 h31
15.05 50km USA25th Silver State 50 km 7:25:14 h55
2009
05.12 60km NZL22nd Kepler Challenge Mountain Run 9:53:37 h334
2008
06.12 60km NZL21st Kepler Challenge Mountain Run 9:22:42 h290
23.08 50km NZLGreat Naseby Water 50 km Race 6:35:34 h13
2007
01.12 60km NZL20th Kepler Challenge Mountain Run 9:33:33 h314
28.10 100km USA5th Javelina Jundred 100 km Endurance Run 23:16:44 h40
13.10 100mi USA8th Heartland 100 Mile Race 28:02:59 h39
2006
22.09 100mi USA8th The Bear 100 Mile Endurance Run 32:50:47 h30
09.09 100mi USA27th Wasatch Front 100 Mile 35:28:59 h141
26.08 100mi USA2nd Lean Horse Ultra-Marathon 100 Mile 27:23:50 h29
15.07 100mi USA5th Tahoe Rim Trail 100M Endurance Runs 32:57:51 h46
2005
03.12 60km NZL18th Kepler Challenge Mountain Run 9:22:12 h297
20.08 100mi USA23rd Leadville Trail 100 Mile 29:15:44 h164
16.07 100mi USA17th Vermont 100 Mile Endurance Race 28:40:06 h120
25.06 100mi USA32th Western States 100 Mile Endurance Run 29:01:00 h269
22.05 50km USA18th Ohlone 50K Wilderness Run 7:49:44 h74
30.04 100km USA10th Miwok 100k Trail race 14:07:34 h178
02.04 100mi USA11th Umstead Endurance Run 100 Miles 25:45:38 h47
2004
03.12 60km NZL17th Kepler Challenge Mountain Run 7:56:15 h283
20.11 84.7km NZLThe Molesworth Run 10:57:16 h9
25.09 12h NZL8th Self Transcendence 12 Hour Track Race, Auckland 90.553 km1 🏆
1989
09.12 60km NZL2nd Kepler Challenge Mountain Run 7:43:33 h134
1984
02.06 24h NZLEast Coast Bays Stadium 24-Hour Track Run 149.200 km4
1983
13.11 80km NZL1st Tree to Sea 80 km Run 6:20:12 h4
1982
10.04 100km NZLPukekohe Wools 100 km 8:33:45 h4
1979
08.11 96km NZLAuckland-Huntly Run 7:25:47 h3 🥉
20.10 100km NZLSymon & Lowther 100 km Road Race 9:32:00 h8
07.07 89mi USA6th Western States 100 Mile Endurance Run 22:01:27 h29