Joyce Ong
Born : 1950 Cat. W75 Ultrarunner since 2009 USA
94
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
98
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
62,6%
Rank quotient ?This runner's calculation uses 176 eligible race(s): Σ(rank − 1) = 6 642; Σ finishers = 10 616. 6 642 / 10 616 × 100 = 62.57%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed176
Km — ultra races17 715 km
> 100 km77
> 160 km24
> 200 km4
> 24h116
> 48h31
Longest race249,0 km

Km per year (ultra races)

1 361
14 races
2022
870
8 races
2023
818
8 races
2024
252
2 races
2025
101
1 race
2026

Race types (share of distance)

Road53,5%
Trail46,5%

Wins & podiums (ultra)

🏆 Win2
🏆 Win F6
🏅 Top 37
🏅 Top 3 F40
Longest winning streak1
Current streak0

HISTORY

176 race(s)
DateRacePerf.Rk
2026
03.04 48h USA6th The Country Mile 48 Hour Race 100.590 km141
2025
23.10 72h USA10th Endless Mile - 72 Hour Race 124.170 km37
04.04 48h USA5th The Country Mile 48 Hour Race 128.264 km106
2024
16.11 24h USA5th Southern Harvest 24 Hour Endurance Challenge 94.951 km14
09.11 50mi USA11th Tunnel Hill 50 Mile Race 20:48:09 h390
24.10 72h USA9th Endless Mile - 72 Hour Race 197.991 km14
21.09 24h USA12th The Dirt Circuit - 24 Hour Endurance Trail Runs 65.339 km25
05.04 48h USA4th The Country Mile 48 Hour Race 85.000 km166
23.03 24h USA2nd Run with the Knights 24 Hr Ultra 94.243 km25
09.03 100km USA10th The Pistol 100 km Ultra Run 22:38:55 h37
16.02 100km USA6th Grandmaster Ultras 100 km Run 44:31:00 h9
2023
18.11 24h USA4th Southern Harvest 24 Hour Endurance Challenge 86.904 km15
11.11 50mi USA10th Tunnel Hill 50 Mile Race 20:03:08 h342
26.10 72h USA8th Endless Mile - 72 Hour Race 193.447 km8
01.07 48h USA12th Merrill's Mile 48 Hour Run 114.737 km41
03.06 24h USA8th Three Sisters Ultra Festival 24 Hour Run 70.811 km24
22.04 24h USA17th 24 Hour Adventure Trail Run 60.350 km16
31.03 48h USA3rd The Country Mile 48 Hour Race 163.573 km80
18.03 100km USA9th The Pistol 100 km Ultra Run 30:48:15 h39
2022
10.12 24h USA2nd Stillwater Ultras 24 Hour Race 67.592 km13
19.11 24h USA11th Crooked Road 24 Hour Ultra 73.337 km66
26.10 96h USA7th Ozone Endurance Challenge 96 Hour Race 108.244 km7
21.10 48h USA7th Endless Mile - 48 Hour Race 144.197 km27
01.10 12h USA10th The Dirt Circuit - 12 Hour Endurance Trail Runs 45.061 km25
30.09 36h USA4th Buffalo Mountain Endurance 36 Hour Run 72.420 km28
17.09 12h USA17th 12 Hour Adventure Trail Run 47.314 km48
13.08 24h USA3rd Fort Frenzy 24 Hour Run 70.489 km26
02.07 48h USA11th Merrill's Mile 48 Hour Run 149.795 km39
28.05 24h USA7th Three Sisters Ultra Festival 24 Hour Run 80.467 km22
14.05 24h USA5th Locomotion 24 Hour Run 74.029 km17
23.04 24h USA16th 24 Hour Adventure Trail Run 75.478 km17
08.04 48h USA2nd The Country Mile 48 Hour Race 132.094 km82
18.02 72h USA9th Jackpot Ultra Running Festival 72 Hour Race 220.480 km15
2021
11.12 24h USA1st Stillwater Ultras 24 Hour Race 70.006 km7
27.11 24h USA7th Oxbow Ultra 24/12/6 Hour Run 72.420 km4
20.11 24h USA10th Crooked Road 24 Hour Ultra 83.568 km47
22.10 48h USA6th Endless Mile - 48 Hour Race 167.371 km16
01.10 36h USA3rd Buffalo Mountain Endurance 36 Hour Run 84.490 km23
2020
14.02 48h USA7th Jackpot Ultra Running Festival 48 Hour Race 177.027 km15
07.02 48h USA2nd Grandmaster Ultras 48 Hour Challenge 104.929 km6
2019
30.11 24h USA7th Delirium Ultra 24 Hour Run 105.463 km10
23.11 24h USA9th Crooked Road 24 Hour Ultra 95.199 km28
09.11 50mi USA6th Tunnel Hill 50 Mile Race 18:31:21 h404
01.11 48h USA6th Save the Daylight 48 Hour Race 171.556 km9
18.10 48h USA4th Endless Mile - 48 Hour Race 182.747 km6
05.10 100mi USA2nd Dream Chaser 100 Mile Run 34:12:53 h3 🥉
21.09 12h USA14th 12 Hour Adventure Trail Run 52.303 km81
09.08 36h USA1st Buffalo Mountain Endurance 36 Hour Run 122.712 km12
03.08 100mi USA2nd Mo' Bell 100 Miles 41:31:08 h15
27.07 30h USA3rd Southern Discomfort 30 Hour Race 117.624 km8
04.05 24h USA14th 24 Hour Adventure Trail Run 65.178 km21
08.02 48h USA1st Grandmaster Ultras 48 Hour Challenge 160.934 km3 🥉
2018
01.12 24h USA7th One Epic Run 24 Hour Race 64.695 km22
24.11 24h USA4th Oxbow Ultra 24 Hour Run 72.420 km7
17.11 24h USA8th Crooked Road 24 Hour Ultra 104.607 km31
10.11 50mi USA5th Tunnel Hill 50 Mile Race 15:49:39 h397
02.11 48h USA5th Save the Daylight 48 Hour Race 164.153 km14
19.10 48h USA3rd Endless Mile - 48 Hour Race 174.578 km8
13.10 50km USA5th Cloudsplitter 100 - 50 km Run 18:38:31 h34
15.09 12h USA13th 12 Hour Adventure Trail Run 51.499 km72
03.08 36h USA4th Holston River Endurance Challenge - 36 Hour Run 120.700 km14
28.07 30h USA2nd Southern Discomfort 30 Hour Race 101.584 km11
30.05 96h USA3rd Ozone Endurance Challenge 96 Hour Race 199.558 km11
28.04 24h USA3rd Three Sisters Ultra Festival 24 Hour Run 100.584 km6
22.04 24h USA13th 24 Hour Adventure Trail Run 85.697 km12
14.04 12h USA3rd Locomotion 12 Hour Run 61.049 km19
18.03 50km USA6th The Pistol 50 km Ultra Run 8:14:56 h124
17.03 50mi USA6th The Pistol 50 Mile Ultra Run 16:29:12 h35
24.02 24h USA2nd Run4Water 24 Hours Run 95.868 km19
2017
09.12 24h USA6th One Epic Run 24 Hour Race 84.812 km24
25.11 24h USA3rd Oxbow Ultra 24 Hour Run 80.467 km6
18.11 24h USA7th Crooked Road 24 Hour Ultra 104.929 km34
03.11 48h USA4th Save the Daylight 48 Hour Race 185.879 km4
20.10 48h USA2nd Endless Mile - 48 Hour Race 180.434 km6
16.09 12h USA12th 12 Hour Adventure Trail Run 52.303 km73
08.07 12h USA8th Dirty Dozen 12h Endurance Run 61.589 km54
24.06 12h USA5th Dizzy GOAT 12 Hour Trail Run 52.303 km73
03.06 100km USA4th Hell Hole Hundred 100 km 21:14:03 h4
26.05 48h USA5th Sole Challenge 48 Hour Run 179.161 km8
29.04 24h USA12th 24 Hour Adventure Trail Run 60.350 km16
15.04 12h USA2nd Locomotion 12 Hour Run 64.373 km23
01.04 24h USA1st Run4Water 24 Hours Run 110.628 km27
11.02 100km USA12th Iron Horse 100 km Endurance Run 16:37:25 h16
04.02 24h USA2nd Hallucination 24 Hour Trail Run 111.237 km16
2016
31.12 50km USA5th The Pistol 50 km Ultra Run 8:37:49 h183
31.12 50mi USA5th The Pistol 50 Mile Ultra Run 16:34:13 h30
26.11 24h USA2nd Oxbow Ultra 24 Hour Run 88.513 km4
19.11 24h USA6th Crooked Road 24 Hour Ultra 103.804 km26
04.11 48h USA3rd Save the Daylight 48 Hour Race 191.190 km5
21.10 48h USA1st Endless Mile - 48 Hour Race 167.711 km9
24.09 24h USARun Around the World Festival - 24hrs Run 109.435 km9
03.09 100mi USA2nd Wildcat 100 - 100 Mile Race 36:24:44 h15
28.05 24h USA4th Sole Challenge 24 Hour Run 85.774 km15
07.05 24h USA11th 24 Hour Adventure Trail Run 100.584 km11
30.04 24h USA1st Three Sisters Ultra Festival 24 Hour Run 105.613 km6
02.04 100km USA3rd Blind Pig 100 km Ultra Marathon 23:48:16 h30
19.03 24h USA2nd Vegas Moonlight 24 hour Ultra 103.609 km2 🥈
06.02 24h USA1st Hallucination 24 Hour Trail Run 79.662 km22
02.01 110km USA4th The Pistol 110 km Ultra Run 22:38:21 h46
2015
05.12 24h USA5th One Epic Run 24 Hour Race 90.123 km21
28.11 24h USA1st Oxbow Ultra 24 Hour Run 96.560 km3 🥉
19.11 72h USA15th Ultracentric 72 Hour Run 248.988 km4
31.10 24h USA2nd Save the Daylight 24 Hour Race 106.216 km12
24.10 24h USA7th Double Dirty Dozen- Hybrid - 24 hour 108.147 km1 🏆
26.09 24h USARun Around the World Festival - 24hrs Run 115.872 km9
19.09 12h USA10th 12 Hour Adventure Trail Run 52.303 km69
04.09 84h USA1st A Race for the Ages 222.089 km22
11.07 12h USA6th Dirty Dozen 12h Endurance Run 65.452 km57
05.06 24h USA2nd Knock on Wood Ultra - 24 Hours Run 146.450 km1 🏆
23.05 24h USA3rd Sole Challenge 24 Hour Run 110.140 km11
02.05 24h USA10th 24 Hour Adventure Trail Run 90.525 km28
25.04 24h USA12th Virginia 24 Hour Run for Cancer 98.169 km28
11.04 100km USA2nd Blind Pig 100 km Ultra Marathon 20:11:21 h16
07.03 24h USA3rd Lapper's Delight 24h Run 82.076 km15
07.02 24h USA4th Delirium Ultra 24 Hour Run 109.113 km30
17.01 24h USA4th 24hrs of HOSTELity 78.455 km9
03.01 100km USA3rd The Pistol 100 km Ultra Run 18:50:20 h34
2014
13.12 12h USA1st The Nutcracker 12 Hour Endurance Run 74.029 km29
06.12 24h USA4th One Epic Run 24 Hour Race 99.779 km12
22.11 24h USA4th Crooked Road 24 Hour Ultra 108.863 km19
15.11 24h USA2nd Miles for Maria 24 Hour Run 109.837 km6
08.11 50km USA1st Paris Mountain Ultra 50K 9:38:17 h20
25.10 24h USA6th Double Dirty Dozen - 24 hour 100.487 km5
13.09 32mi USA20th Bohemian Alps 50 km Ultramarathon 8:34:00 h18
02.08 50km USA6th Dahlgren Heritage Rail Trail 50K 8:03:04 h43
24.05 24h USA2nd Sole Challenge 24 Hour Run 112.034 km20
17.05 24h USA1st Knock on Wood Ultra - 24 Hours Run 112.654 km8
03.05 24h USA9th 24 Hour Adventure Trail Run 90.525 km32
12.04 100km USA1st Blind Pig 100 km Ultra Marathon 23:33:33 h15
08.03 24h USA2nd Lapper's Delight 24h Run 101.388 km7
15.02 100km USA9th Iron Horse 100 km Endurance Run 15:57:28 h38
08.02 24h USA3rd Delirium Ultra 24 Hour Run 106.393 km44
19.01 33.9mi USA1st The Batona 50 km 9:58:00 h18
04.01 100km USA2nd The Pistol 100 km Ultra Run 18:11:13 h14
2013
31.12 24h USA6th Freedom Park New Year's Ultra 24h 92.642 km17
17.11 50km USA1st Old Glory Trail Trot 50 km 8:21:56 h38
09.11 24h USA1st Operation Ultra 24 Hour Endurance Run 118.608 km6
26.10 75mi USA5th Ghost Train Rail Trail Race 75 Mile 26:11:00 h13
19.10 24h USA1st The Dirt Circuit - 24 Hour Endurance Trail Runs 113.941 km6
21.09 24h USARun Around the World Festival - 24hrs Run 101.388 km10
17.08 100km USA3rd Run-de-Vous 100 km Endurance Run 17:32:40 h5
03.08 50km USA5th Dahlgren Heritage Rail Trail 50K 7:47:03 h82
06.07 24h USA2nd Merrill's Mile 24 Hour Run 92.427 km20
01.06 24h USA5th Black Mountain Monster 24 Hour Run 154.657 km2 🥈
25.05 24h USA1st Sole Challenge 24 Hour Run 128.884 km14
04.05 24h USA8th 24 Hour Adventure Trail Run 80.467 km27
20.04 24h USA10th Virginia 24 Hour Run for Cancer 134.380 km12
23.03 50km USA6th Terrapin Mountain 50 km Race 9:41:37 h271
09.03 24h USA1st Lapper's Delight 24h Run 108.630 km7
09.02 24h USA2nd Delirium Ultra 24 Hour Run 104.752 km26
02.02 8h USA8th 8 Hour Adventure Trail Run 50.694 km63
12.01 50km USA1st Savannah Rails to Trails 50K 7:50:50 h68
2012
31.12 24h USA5th Freedom Park New Year's Ultra 24h 103.451 km14
15.12 50km USA4th Mel Williams Memorial Seashore (Seashore Nature Trail) 7:30:20 h249
15.11 72h USA12th Ultracentric 72 Hour Run 221.284 km10
27.10 24h USA4th Double Dirty Dozen - 24 hour 85.617 km7
20.10 50km USA28th Palo Duro 50 km Trail Run 8:23:21 h69
06.10 50km USA12th Rio Del Lago 50 km 8:24:58 h28
04.08 50km USA4th Dahlgren Heritage Rail Trail 50K 8:01:35 h80
27.07 24h USA16th Around The Lake Ultra 24h 103.448 km26
21.07 12h USA6th 12 Hours of Big Bear Trail Run 62.764 km22
02.06 24h USA4th Black Mountain Monster 24 Hour Run 134.702 km5
21.04 24h USA7th 24 Hour Adventure Trail Run 100.584 km16
31.03 24h USA2nd Operation Endurance 24 Hour Run 104.092 km16
2011
18.11 48h USA11th Ultracentric 48 Hour Run 199.816 km5
22.10 24h USA3rd Double Dirty Dozen - 24 hour 110.658 km4
15.10 50km USA27th Palo Duro 50 km Trail Run 8:28:56 h94
06.08 50km USA3rd Dahlgren Heritage Rail Trail 50K 8:06:56 h90
16.07 12h USA5th 12 Hours of Big Bear Trail Run 62.764 km19
07.05 24h USA6th 24 Hour Adventure Trail Run 80.467 km27
2010
10.07 50km USA1st Skyline Challenge Trail 50k Ultra-Marathon 10:11:00 h115
01.05 24h USA5th 24 Hour Adventure Trail Run 64.373 km33
2009
14.11 50km USA1st Run the River 6:37:14 h36
10.10 50km USA2nd New River Trail 50 km 6:34:48 h88
19.09 12h USA4th 12 Hour Adventure Trail Run 73.225 km13
09.08 51km USA1st E.T. Full Moon Midnight Ultra Marathon 7:06:15 h35