Ron Berby
ID 55722
Born : 1942 Cat. M80 Ultrarunner since 1980 USA
36
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
56
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
1
Countries visited ?USAUnited States
55,9%
Rank quotient ?This runner's calculation uses 38 eligible race(s): Σ(rank − 1) = 1 611; Σ finishers = 2 883. 1 611 / 2 883 × 100 = 55.88%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed38
Km — ultra races4 583 km
> 100 km19
> 160 km16
> 200 km1
> 24h10
Longest race215,0 km
2nd Sri Chinmoy 24 Hour Race — 26/9/1981

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road48,6%
Trail51,4%

Wins & podiums (ultra)

🏆 Win1
🏆 Win M1
🏅 Top 37
🏅 Top 3 M7
Longest winning streak1
Current streak0

Records

50 km7h40'27100 km7h53'2550 mi6h41'25100 mi23h18'0024 h215,04 km

HISTORY

38 race(s) · 7 split(s) nested
DateRacePerf.Rk
2000
16.09 24h USA10th Olander Park 24 Hour Run 80.767 km129
08.04 50mi USA6th Umstead Endurance Run 50 Miles 14:47:15 h88
1999
18.12 50km USA3rd Huff 50K Trail Run 7:40:27 h160
10.04 50mi USA5th Umstead Endurance Run 50 Miles 12:56:35 h77
1997
04.10 100mi USA7th Arkansas Traveller 100 28:48:38 h38
19.07 100mi USA9th Vermont 100 Mile Endurance Race 28:49:33 h145
05.04 100mi USA3rd Umstead Endurance Run 100 Miles 26:34:00 h24
02.02 100mi USA5th Rocky Raccoon 100 Mile Trail Run 28:05:50 h44
1996
23.11 50mi USA34th JFK 50 Mile 10:33:17 h356
21.09 100mi USA6th Superior Fall Trail Races 100 Mile 33:50:11 h44
06.04 34mi USARun to Lake Michigan 7:01:22 h9
1995
07.10 100mi USA5th Arkansas Traveller 100 26:51:23 h48
04.02 100mi USA3rd Rocky Raccoon 100 Mile Trail Run 28:16:28 h31
1994
08.10 100mi USA4th Arkansas Traveller 100 27:19:48 h49
1992
10.10 100mi USA2nd Arkansas Traveller 100 25:41:24 h46
20.06 100mi USA3rd Mohican Trail 100 Mile 27:36:00 h33
1991
26.10 50mi USA9th Mountain Masochist 50 Mile Trail Run 10:07:58 h64
1989
28.10 50mi USA7th Mountain Masochist 50 Mile Trail Run 9:42:40 h40
19.08 24h USA1st Olander Park 24 Hour Run 175.273 km3 🥉
1984
18.08 24h USAMonroe Milers 24 Hour Run 100.584 km8
14.04 24h USACornbelt Running Club 24 Hour Run 137.306 km15
1983
02.10 50mi USAAMJA 50 Mile Ultramarathon 6:41:25 h21
20.08 24h USAMonroe Milers 24 Hour Run 171.556 km2 🥈
23.07 24h USAEssex County 24 Hour 183.465 km1 🏆
22.05 50mi USA2nd Ice Age Trail 50 Mile Run 8:20:57 h19
09.04 24h USACornbelt Running Club 24 Hour Run 188.773 km2 🥈
1982
27.11 50mi USASea Gate Ultras 50 Mile Run 7:59:40 h17
24.10 50mi USARiverside Park 50 Mile 7:04:01 h11
25.09 24h USA3rd Sri Chinmoy 24 Hour Race 96.956 km34
05.06 100mi USA4th Old Dominion 100 Mile Endurance Run 23:18:00 h20
03.04 24h USACornbelt Running Club 24 Hour Run 113.458 km10
1981
28.11 60km USAMarathon Plus 60 km Run 5:08:57 h23
28.11 50mi USAMarathon Plus 50 Mile Run 7:11:07 h13
28.11 100km USAMarathon Plus 100 km Run 8:56:35 h9
26.09 24h USA2nd Sri Chinmoy 24 Hour Race 215.041 km3 🥉
03.05 100km USAGreat Mille Lacs 100 km 7:54:05 h2 🥈
1980
26.10 50mi USAMichigan 50 miles 6:44:37 h9
01.06 100km USAGreat Mille Lacs 100 km 7:53:25 h2 🥈