Katherine Welch
ID 47135
Born : 1971 Cat. W55 Ultrarunner since 2008 USA
36
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
52
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
9
Countries visited ?AUTAustriaCZECzechiaGBRUnited KingdomGERGermanyHKGHong KongITAItalySUISwitzerlandTHAThailandUSAUnited States
32,9%
Rank quotient ?This runner's calculation uses 37 eligible race(s): Σ(rank − 1) = 1 111; Σ finishers = 3 381. 1 111 / 3 381 × 100 = 32.86%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed45
Km — ultra races3 910 km
> 100 km14
> 160 km8
> 200 km2
> 24h5
Longest race400,0 km
Cape Wrath Ultra — 20/5/2018

Km per year (ultra races)

181
3 races
2022
379
3 races
2023
50
1 race
2024
161
1 race
2025
89
1 race
2026

Race types (share of distance)

Road19,0%
Trail67,4%
Stage13,6%

Wins & podiums (ultra)

🏆 Win1
🏆 Win F12
🏅 Top 31
🏅 Top 3 F21
Longest winning streak1
Current streak0

Records

50 km5h01'09100 km11h07'0250 mi8h04'52100 mi19h49'5812 h88,92 km24 h168,50 km

HISTORY

37 race(s)
DateRacePerf.Rk
2026
27.06 12h USA3rd Vulture Vista Ultra 88.916 km10
2025
16.05 100mi USA13th Cruel Jewel 100 Mile 41:23:17 h74
2024
07.12 50km USA11th Jackson County 50-50 Ultramarathon - 50 km 7:12:30 h27
2023
29.09 100mi USA25th The Bear 100 Mile Endurance Run 34:23:19 h192
03.06 50km USA3rd The Full Mo 50 km Race 5:14:56 h19
29.04 24h USA4th Glacial Esker 24h 168.498 km1 🏆
2022
03.12 50mi USA9th Jackson County 50-50 Ultra-marathon - 50 Mile 11:03:44 h9
16.07 8h USA8th 8-Hour Dream Endurance Race 50.050 km49
21.05 50km USA19th Dances with Dirt - Gnaw Bone 50 km Ultra 6:15:08 h12
2020
18.07 100mi CZE22. TMMTR - TransMoravian Masochist Trail Run 21:36:53 h4
09.02 63km GER3. G1 Grüngürtel Ultra Köln 6:17:43 h32
2019
12.10 100mi USA7th Indiana Trail 100 Mile 19:49:58 h9
02.08 106km AUTPitz Alpine Glacier Trail 106 km 23:43:26 h22
02.02 130km/2stages HKG3rd The 9 Dragons - 50/50 26:36:37 h37
2018
24.11 24h THA1st Relentless 24 Hour Endurance Run 80.500 km6
22.09 119km ITA8^ Marathon Trail Lago di Como – Long Distance 27:14:02 h20
20.05 400km/8stages GBRCape Wrath Ultra 3d 03:48:18 h78
25.03 50km THA1st Navy Frog Trail Challenges 10:01:51 h23
2017
10.03 100km HKG6th TransLantau 100 Ultra Trail 19:03:48 h48
2016
08.04 239km GER6. Jurasteig Nonstop Ultratrail 239 km 45:59:00 h8
2015
07.11 24h THA4th Relentless Chiang Mai 24-Hour-Run 72.800 km24
18.07 101km SUI3. Eiger Ultra Trail 101 km 18:30:58 h158
31.01 100km THA4th The North Face 100 Thailand - 100 km 12:21:21 h5
2014
07.12 50km HKG3rd MSIG Lantau 50 9:08:52 h44
01.11 24h THA3rd Relentless Chiang Mai 24-Hour-Run 114.700 km5
06.09 50km USA6th Run Woodstock - Freak 50 km 5:04:43 h4
2013
25.05 24h THA2nd Relentless Chiang Mai 24-Hour-Run 125.800 km6
02.02 100km THA2nd The North Face 100 Thailand - 100 km 11:07:02 h5
2012
21.10 50mi USA13th Tussey Mountainback 50 Miler - US Championship 8:04:52 h21
21.10 50mi USA13th Tussey Mountainback 50 Miler - Open race 8:04:52 h33
29.09 50km USA1st Berkeley Trail Adventure 5:01:09 h6
07.09 100mi USA4th Run Woodstock - 100 Mile Hallucination Run 23:41:24 h12
04.02 100km THA1st The North Face 100 Thailand - 100 km 12:02:50 h4
2011
05.11 50mi USA15th OPSF Ultra 50 Mile Race 10:22:00 h5
2010
19.06 74.3km SUI15ème Le Défi de Val de Travers - Trail de l'Absinthe 11:33:17 h102
2008
27.12 50km USA12th Huff 50K Trail Run 5:45:43 h28
13.09 50km USA2nd Lake City Distance Classic 5:09:42 h6