James Sintef
ID 446857
Born : 1962 Cat. M60 Ultrarunner since 2013 USA
30
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
39
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
75,3%
Rank quotient ?This runner's calculation uses 30 eligible race(s): Σ(rank − 1) = 2 723; Σ finishers = 3 617. 2 723 / 3 617 × 100 = 75.28%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed30
Km — ultra races1 794 km
Longest race100,0 km
13th Javelina Jundred 100 km Endurance Run — 31/10/2015

Km per year (ultra races)

50
1 race
2022
100
2 races
2023
130
2 races
2024
211
3 races
2025
161
2 races
2026

Race types (share of distance)

Trail100,0%

Records

50 km6h22'48100 km18h25'4450 mi13h02'13

HISTORY

30 race(s)
DateRacePerf.Rk
2026
06.06 50mi USA5th Malibu Canyon Trail Races (SAMO 50 Mile) 15:21:50 h62
18.04 50mi USA33rd Leona Divide 50 Mile Run 16:53:09 h59
2025
07.06 50mi USA4th Malibu Canyon Trail Races (SAMO 50 Mile) 15:06:54 h67
12.04 50mi USA32nd Leona Divide 50 Mile Run 16:17:53 h72
22.02 50km USA12th Sean O'Brien 50 km Trail Race 9:12:04 h52
2024
20.04 50mi USA31st Leona Divide 50 Mile Run 16:47:14 h80
27.01 50km USA11th Sean O'Brien 50 km Trail Race 10:28:53 h78
2023
28.10 50km USA2nd SAMO Trail Runs 9:01:01 h67
28.01 50km USA10th Sean O'Brien 50 km Trail Race 10:05:14 h88
2022
08.01 50km USA9th Sean O'Brien 50 km Trail Race 8:57:34 h42
2019
24.08 50km USA28th Bulldog 50k Ultra Run 8:10:53 h117
02.03 50km USA3rd Griffith Park Trail Marathon 6:33:08 h81
02.02 50km USA6th Sean O'Brien 50 km Trail Race 7:34:26 h85
2018
20.10 50km USA2nd Rocky Peak Trail Races 8:37:57 h56
25.08 50km USA27th Bulldog 50k Ultra Run 8:06:18 h151
03.03 50km USA2nd Griffith Park Trail Marathon 7:05:44 h75
2017
26.08 50km USA26th Bulldog 50k Ultra Run 7:32:36 h77
04.03 50km USA1st Griffith Park Trail Marathon 6:25:19 h45
04.02 50mi USA4th Sean O'Brien 50 Mile Trail Race 13:02:13 h81
2016
17.12 50km USA1st Paramount Ranch Trail Run 6:51:05 h23
27.08 50km USA25th Bulldog 50k Ultra Run 6:22:48 h122
16.04 50mi USA24th Leona Divide 50 Mile Run 13:20:02 h143
2015
31.10 100km USA13th Javelina Jundred 100 km Endurance Run 18:25:44 h75
22.08 50km USA24th Bulldog 50k Ultra Run 6:50:06 h144
25.04 50km USA23rd Leona Divide 50 km Run 10:23:27 h255
15.02 50km USA5th Bandit Ultra 50K Trail Run 7:44:39 h86
07.02 50mi USA2nd Sean O'Brien 50 Mile Trail Race 14:34:44 h99
2014
23.08 50km USA23rd Bulldog 50k Ultra Run 6:57:22 h128
01.02 50km USA1st Sean O'Brien 50 km Trail Race 7:57:58 h102
2013
24.08 50km USA22nd Bulldog 50k Ultra Run 7:15:13 h141