Tetsuo (斉藤哲夫) Saito

Born : 1949 Cat. M75 Ultrarunner since 1997

DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.

114

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

Countries visited ?

Germany

Greece

Japan

25,8%

Rank quotient ?This runner's calculation uses 92 eligible race(s): Σ(rank − 1) = 9 358; Σ finishers = 36 279. 9 358 / 36 279 × 100 = 25.79%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed145

Km — ultra races18 711 km

> 100 km49

> 160 km30

> 200 km30

Longest race2 348,0 km

Transeuropalauf 2025 Flensburg - San Marino — 3/8/2025

Km per year (ultra races)

1 084

2022

809

2023

442

2024

2 567

2025

204

2026

Race types (share of distance)

Road65,8%

Trail16,3%

Stage17,9%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M1

🏅 Top 33

🏅 Top 3 M3

Longest winning streak0

Current streak0

Records

100 km8h21'00 100 mi31h28'24

HISTORY

99 race(s) · 43 stage(s) nested

Date		Race	Perf.	Rk
2026
06.06	159km	7th Nikko Sennin Concentric Highway Journey Run	31:28:24 h	123
11.04	8h	21st Toda Saiko 8 Hours	45.000 km	148
2025
19.10	70km	32. Ultramarathon Okumusashi	10:34:05 h	470
03.08–12.09	2348km/41stages	Transeuropalauf 2025 Flensburg - San Marino	14d 04:09:00 h	16
03.08	54km	Transeuropalauf 2025 1. Etappe Flensburg - Hattstedt	6:25:00 h	11
04.08	58km	Transeuropalauf 2025 2. Etappe Hattstedt - Meldorf	7:59:00 h	18
05.08	53km	Transeuropalauf 2025 3. Etappe Meldorf - Glückstadt	7:32:00 h	25
06.08	56km	Transeuropalauf 2025 4. Etappe Glückstadt - Oerel	7:27:00 h	18
07.08	55km	Transeuropalauf 2025 5. Etappe Oerel - Stadtland	7:33:00 h	19
08.08	54km	Transeuropalauf 2025 6. Etappe Stadtland - Jever	7:29:00 h	25
09.08	56km	Transeuropalauf 2025 7. Etappe Jever - Leer	7:50:00 h	24
10.08	50km	Transeuropalauf 2025 8. Etappe Leer - Rhede	7:05:00 h	19
11.08	61km	Transeuropalauf 2025 9. Etappe Rhede - Twist-Bült	8:36:00 h	19
12.08	61km	Transeuropalauf 2025 10. Etappe Twist-Bült - Gronau	8:26:00 h	17
13.08	66km	Transeuropalauf 2025 11. Etappe Gronau - Isselburg-Werth	9:45:00 h	17
14.08	53km	Transeuropalauf 2025 12. Etappe Isselburg-Werth - Walbeck	7:50:00 h	21
15.08	57km	Transeuropalauf 2025 13. Etappe Walbeck - Karken	8:46:00 h	22
16.08	53km	Transeuropalauf 2025 14. Etappe Karken - Zutendaal	7:41:00 h	22
17.08	km58	Transeuropalauf 2025 15. Etappe Zutendaal - Bekkevoort	8:24:00 h	21
18.08	50km	Transeuropalauf 2025 16. Etappe Bekkevoort - Eghezee	7:25:00 h	21
19.08	72km	Transeuropalauf 2025 17. Etappe Eghezee - Givet	10:30:00 h	15
20.08	58km	Transeuropalauf 2025 18. Etappe Givet - Libramont-Chevigny	8:37:00 h	15
21.08	66km	Transeuropalauf 2025 19. Etappe Libramont-Chevigny - Simmern	9:33:00 h	16
22.08	53km	Transeuropalauf 2025 20. Etappe Simmern - Thionville-Diedenhofen	7:34:00 h	16
23.08	50km	Transeuropalauf 2025 21. Etappe Thionville-Diedenhofen - Boulay-Moselle	6:48:00 h	13
24.08	61km	Transeuropalauf 2025 22. Etappe Boulay-Moselle - Sarralbe	8:46:00 h	15
25.08	64km	Transeuropalauf 2025 23. Etappe Sarralbe - Hochfelden	9:33:00 h	16
26.08	53km	Transeuropalauf 2025 24. Etappe Hochfelden - Offenburg	7:24:00 h	14
27.08	59km	Transeuropalauf 2025 25. Etappe Offenburg - Schramberg	9:06:00 h	25
28.08	66km	Transeuropalauf 2025 26. Etappe Schramberg - Engen	9:42:00 h	21
29.08	65km	Transeuropalauf 2025 27. Etappe Engen-Welschingen - Friedrichshafen	9:54:00 h	23
30.08	50km	Transeuropalauf 2025 28. Etappe Friedrichshafen - Lustenau	7:22:00 h	35
31.08	64km	Transeuropalauf 2025 29. Etappe Lustenau - Dalaas	9:09:00 h	21
01.09	48km	Transeuropalauf 2025 30. Etappe Dalaas - Pians	7:33:00 h	23
02.09	55km	Transeuropalauf 2025 31. Etappe Pians - Reschen	11:20:00 h	31
03.09	48km	Transeuropalauf 2025 32. Etappe Reschen - Schlanders	7:18:00 h	27
04.09	47km	Transeuropalauf 2025 33. Etappe Schlanders - Lana	7:42:00 h	26
05.09	51km	Transeuropalauf 2025 34. Etappe Lana - Salurn	8:50:00 h	27
06.09	65km	Transeuropalauf 2025 35. Etappe Salurn - Rovereto-Marco	9:57:00 h	22
07.09	58km	Transeuropalauf 2025 36. Etappe Rovereto - Bussolengo	8:03:00 h	18
08.09	62km	Transeuropalauf 2025 37. Etappe Bussolengo - Governolo	8:21:00 h	19
09.09	54km	Transeuropalauf 2025 38. Etappe Governolo - Finale Emilia	6:12:00 h	11
10.09	66km	Transeuropalauf 2025 39. Etappe Finale Emilia - Conselice Ravenna	8:15:00 h	12
11.09	69km	Transeuropalauf 2025 40. Etappe Conselice - Cesenatico	9:48:00 h	20
12.09	49km	Transeuropalauf 2025 41. Etappe Cesenatico - San Marino	6:39:00 h	17
29–30.03	149km/2stages	2nd Modern Japanese Silk Road Journey Run	23:37:37 h	62
29.03	78km	2nd Modern Japanese Silk Road Journey Run - Stage 1	11:45:34 h	78
30.03	71km	2nd Modern Japanese Silk Road Journey Run - Stage 2	11:52:03 h	60
2024
16.11	130km	2nd Mito Kaido Journey run	21:24:05 h	49
02.11	142km	6th Autumn leaves in Okumusashi / Chichibu Journey run	23:00:09 h	66
20.10	70km	31. Ultramarathon Okumusashi	9:13:09 h	376
29.09	100km	11th Naeba-Sanroku Geopark Tsunan Ultramarathon 100K	14:22:06 h	30
2023
28.10	147km	5th Autumn leaves in Okumusashi / Chichibu Journey run	23:05:48 h	78
04.06	78km	30. Ultramarathon Okumusashi	10:06:47 h	445
30.04	513km	18th River Road Foot Race 513 km	5d 05:06:15 h	41
08.04	71km	18th Toda Saiko 70 km	7:56:56 h	117
2022
29.10	146km	4th Autumn leaves in Okumusashi / Chichibu Journey run	23:57:44 h	91
03.09	121km	2nd Tone River Run Up Journey Run Upstream	21:32:00 h	32
05.06	78km	29. Ultramarathon Okumusashi	8:39:56 h	249
30.04	513km	17th River Road Foot Race 513 km	5d 07:13:36 h	50
09.04	71km	17th Toda Saiko 70 km	8:40:01 h	126
02.04	155km	2nd Tone River Run Up Journey Run Downstream	24:15:00 h	27
2021
30.10	146km	3rd Autumn leaves in Okumusashi / Chichibu Journey run	19:37:52 h	46
16.10	120km	1st Tone River Run Up Journey Run Upstream	17:38:00 h	18
09.10	155km	1st Tone River Run Up Journey Run Downstream	24:36:00 h	24
30.04	503km	16th River Road Foot Race 503 km	5d 01:20:54 h	29
10.04	70km	16th Toda Saiko 70 km	8:33:29 h	362
03.04	80km	9th Arakawa Riverside Journey Stage Race - Stage 1	12:26:00 h	56
2020
24.10	146km	2nd Autumn leaves in Okumusashi / Chichibu Journey run	25:26:40 h	184
20.09	127km	3rd Utsukushima Fukushima Journey Run 127K	23:17:08 h	110
2019
02.11	145km	1st Autumn leaves in Okumusashi / Chichibu Journey run	22:16:12 h	65
02.06	78km	26. Ultramarathon Okumusashi	9:06:55 h	543
13.04	70km	14th Toda Saiko 70 km	7:04:51 h	150
2018
03.06	78km	25. Ultramarathon Okumusashi	9:18:17 h	433
30.04	514km	14th River Road Foot Race 514 km	5d 03:53:47 h	42
14.04	70km	13th Toda Saiko 70 km	6:33:40 h	84
2017
04.06	78km	24. Ultramarathon Okumusashi	8:19:54 h	275
30.04	520km	13th River Road Foot Race 520 km	4d 15:42:04 h	21
2016
05.06	78km	23. Ultramarathon Okumusashi	7:51:55 h	229
09.04	70km	11th Toda Saiko 70 km	7:04:03 h	96
05.03	204km	6th Little Edo Oedo 200k	31:55:25 h	91
2015
20.09	153km	18th Karisakatoge beyond Chichibu Run	24:19:28 h	113
22.06	77km	22. Ultramarathon Okumusashi	7:47:44 h	205
30.04	520km	11th River Road Foot Race 520 km	4d 05:14:56 h	7
18.04	250km	22. Sakura Michi Kokusai Nature Run	35:17:48 h	81
28.02	203km	5th Little Edo Oedo 200k	28:24:40 h	32
2014
14.09	142km	17th Karisakatoge beyond Chichibu Run	20:53:41 h	52
29.08	47km	Spreelauf Etappe 6 Bautzen-Eibau/Walddorf	4:43:09 h	5
28.08	71.7km	Spreelauf Etappe 5 Spremberg-Bautzen	8:24:14 h	13
27.08	73.4km	Spreelauf Etappe 4 Lübbenau-Spremberg	7:55:33 h	6
26.08	81km	Spreelauf Etappe 3 Beeskow-Lübbenau	8:31:55 h	7
25.08	65.6km	Spreelauf Etappe 2 Neu Zittau-Beeskow	6:32:23 h	7
24.08	51.5km	Spreelauf Etappe 1 Berlin/Spandau-Neu Zittau	5:02:37 h	8
24.08	390.2km/6stages	5. Internationaler Spreelauf	41:09:51 h	6
27.07	77km	21. Ultramarathon Okumusashi	8:41:28 h	171
06.07	8h	20th 8-Hour Endurance Race Tokorozawa	58.428 km	165
30.04	520km	10th River Road Foot Race 520 km	4d 08:49:45 h	8
18.04	250km	21. Sakura Michi Kokusai Nature Run	34:02:49 h	52
01.03	203km	4th Little Edo Oedo 200k	27:51:56 h	16
2013
15.09	142km	16th Karisakatoge beyond Chichibu Run	20:44:16 h	42
28.07	77km	20. Ultramarathon Okumusashi	8:13:11 h	251
07.07	8h	19th 8-Hour Endurance Race Tokorozawa - 3 tai	45.444 km	86
03.05	255km	9th River Road Foot Race 255 km	37:20:57 h	2 🥈
19.04	250km	20. Sakura Michi Kokusai Nature Run	33:20:00 h	28
2012
16.09	143km	15th Karisakatoge beyond Chichibu Run	22:23:01 h	59
05.08	77km	19. Ultramarathon Okumusashi	9:36:45 h	446
08.07	8h	18th 8-Hour Endurance Race Tokorozawa	64.920 km	127
21.04	250km	19. Sakura Michi Kokusai Nature Run	33:00:00 h	37
03.03	203km	2nd Little Edo Oedo 200k	26:21:38 h	11
2011
18.09	143km	14th Karisakatoge beyond Chichibu Run	21:18:28 h	31
07.08	77km	18. Ultramarathon Okumusashi	8:28:31 h	243
10.07	8h	17th 8-Hour Endurance Race Tokorozawa - 3 tai	55.182 km	56
16.04	250km	18. Sakura Michi Kokusai Nature Run	30:51:00 h	14
2010
01.08	77km	17. Ultramarathon Okumusashi	8:45:33 h	223
17.04	250km	17. Sakura Michi Kokusai Nature Run	32:00:00 h	26
2009
18.10	100km	15th River Shimanto 100km	9:45:58 h	93
25.09	245.3km	27. Spartathlon	32:43:24 h	49
02.08	75km	16. Ultramarathon Okumusashi	6:44:39 h	47
30.04	520km	5th River Road Foot Race 520 km	4d 01:49:43 h	3 🥉
18.04	250km	16. Sakura Michi Kokusai Nature Run	33:59:00 h	41
2008
26.09	245.3km	26. Spartathlon	32:28:24 h	48
03.08	75km	15. Ultramarathon Okumusashi	7:50:37 h	130
06.07	8h	14th 8-Hour Endurance Race Tokorozawa	58.428 km	95
30.04	522km	4th River Road Foot Race 522 km	5d 05:12:26 h	14
19.04	250km	15. Sakura Michi Kokusai Nature Run	29:03:00 h	5
2007
28.09	245.3km	25. Spartathlon	35:27:30 h	97
05.08	75km	14. Ultramarathon Okumusashi	7:34:22 h	85
01.07	8h	13th 8-Hour Endurance Race Tokorozawa	78.000 km	17
24.06	100km	22. Lake Saroma 100 km Ultramarathon	8:50:50 h	99
21.04	250km	14. Sakura Michi Kokusai Nature Run	30:34:00 h	19
2006
15.10	100km	12th River Shimanto 100km	9:21:02 h	58
29.09	245.3km	24. Spartathlon	35:44:52 h	82
13.08	75km	13. Ultramarathon Okumusashi	7:46:28 h	91
02.07	8h	12th 8-Hour Endurance Race Tokorozawa	52.800 km	129
25.06	100km	21. Lake Saroma 100 km Ultramarathon	8:57:45 h	76
21.05	100km	12th Yatsugatake Nobeyama 100 km	9:47:39 h	29
30.04	522km	2nd River Road Foot Race 522 km	4d 14:08:00 h	2 🥈
2005
07.08	75km	12. Ultramarathon Okumusashi	7:03:39 h	27
22.05	100km	11th Yatsugatake Nobeyama 100 km	9:31:04 h	10
2004
27.06	100km	19. Lake Saroma 100 km Ultramarathon	8:35:50 h	90
16.05	100km	10th Yatsugatake Nobeyama 100 km	9:58:02 h	17
1997
28.09	100km	9. Akita Nairiku 100km Marathon	8:21:00 h	9

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	3/8/2025	Transeuropalauf 2025 Flensburg - San Marino	2 348,00	×20
✓ 2	30/4/2008	4th River Road Foot Race 522 km	522,00	×4
✓ 3	30/4/2006	2nd River Road Foot Race 522 km	522,00	×4
✓ 4	30/4/2017	13th River Road Foot Race 520 km	520,00	×4
✓ 5	30/4/2015	11th River Road Foot Race 520 km	520,00	×4
✓ 6	30/4/2014	10th River Road Foot Race 520 km	520,00	×4
✓ 7	30/4/2009	5th River Road Foot Race 520 km	520,00	×4
✓ 8	30/4/2018	14th River Road Foot Race 514 km	514,00	×4
✓ 9	30/4/2023	18th River Road Foot Race 513 km	513,00	×4
✓ 10	30/4/2022	17th River Road Foot Race 513 km	513,00	×4
✓ 11	30/4/2021	16th River Road Foot Race 503 km	503,00	×4
✓ 12	24/8/2014	5. Internationaler Spreelauf	390,20	×3
✓ 13	3/5/2013	9th River Road Foot Race 255 km	255,00	×2
✓ 14	18/4/2015	22. Sakura Michi Kokusai Nature Run	250,00	×2
✓ 15	18/4/2014	21. Sakura Michi Kokusai Nature Run	250,00	×2
✓ 16	19/4/2013	20. Sakura Michi Kokusai Nature Run	250,00	×2
✓ 17	21/4/2012	19. Sakura Michi Kokusai Nature Run	250,00	×2
✓ 18	16/4/2011	18. Sakura Michi Kokusai Nature Run	250,00	×2
✓ 19	17/4/2010	17. Sakura Michi Kokusai Nature Run	250,00	×2
✓ 20	18/4/2009	16. Sakura Michi Kokusai Nature Run	250,00	×2
✓ 21	19/4/2008	15. Sakura Michi Kokusai Nature Run	250,00	×2
✓ 22	21/4/2007	14. Sakura Michi Kokusai Nature Run	250,00	×2
✓ 23	25/9/2009	27. Spartathlon	245,30	×2
✓ 24	26/9/2008	26. Spartathlon	245,30	×2
✓ 25	28/9/2007	25. Spartathlon	245,30	×2
✓ 26	29/9/2006	24. Spartathlon	245,30	×2
✓ 27	5/3/2016	6th Little Edo Oedo 200k	204,00	×1
✓ 28	28/2/2015	5th Little Edo Oedo 200k	203,00	×1
✓ 29	1/3/2014	4th Little Edo Oedo 200k	203,00	×1
✓ 30	3/3/2012	2nd Little Edo Oedo 200k	203,00	×1
✓ 31	6/6/2026	7th Nikko Sennin Concentric Highway Journey Run	159,00	×1
✓ 32	2/4/2022	2nd Tone River Run Up Journey Run Downstream	155,00	×1
✓ 33	9/10/2021	1st Tone River Run Up Journey Run Downstream	155,00	×1
✓ 34	20/9/2015	18th Karisakatoge beyond Chichibu Run	153,00	×1
✓ 35	29/3/2025	2nd Modern Japanese Silk Road Journey Run	149,00	×1
✓ 36	28/10/2023	5th Autumn leaves in Okumusashi / Chichibu Journey run	147,00	×1
✓ 37	29/10/2022	4th Autumn leaves in Okumusashi / Chichibu Journey run	146,00	×1
✓ 38	30/10/2021	3rd Autumn leaves in Okumusashi / Chichibu Journey run	146,00	×1
✓ 39	24/10/2020	2nd Autumn leaves in Okumusashi / Chichibu Journey run	146,00	×1
✓ 40	2/11/2019	1st Autumn leaves in Okumusashi / Chichibu Journey run	145,00	×1
✓ 41	16/9/2012	15th Karisakatoge beyond Chichibu Run	143,00	×1
✓ 42	18/9/2011	14th Karisakatoge beyond Chichibu Run	143,00	×1
✓ 43	2/11/2024	6th Autumn leaves in Okumusashi / Chichibu Journey run	142,00	×1
✓ 44	14/9/2014	17th Karisakatoge beyond Chichibu Run	142,00	×1
✓ 45	15/9/2013	16th Karisakatoge beyond Chichibu Run	142,00	×1
✓ 46	16/11/2024	2nd Mito Kaido Journey run	130,00	×1
✓ 47	20/9/2020	3rd Utsukushima Fukushima Journey Run 127K	127,00	×1
✓ 48	3/9/2022	2nd Tone River Run Up Journey Run Upstream	121,00	×1
✓ 49	16/10/2021	1st Tone River Run Up Journey Run Upstream	120,00	×1
✓ 50	29/9/2024	11th Naeba-Sanroku Geopark Tsunan Ultramarathon 100K	100,00	—
✓ 51	18/10/2009	15th River Shimanto 100km	100,00	—
✓ 52	24/6/2007	22. Lake Saroma 100 km Ultramarathon	100,00	—
✓ 53	15/10/2006	12th River Shimanto 100km	100,00	—
✓ 54	25/6/2006	21. Lake Saroma 100 km Ultramarathon	100,00	—
✓ 55	21/5/2006	12th Yatsugatake Nobeyama 100 km	100,00	—
✓ 56	22/5/2005	11th Yatsugatake Nobeyama 100 km	100,00	—
✓ 57	27/6/2004	19. Lake Saroma 100 km Ultramarathon	100,00	—
✓ 58	16/5/2004	10th Yatsugatake Nobeyama 100 km	100,00	—
✓ 59	28/9/1997	9. Akita Nairiku 100km Marathon	100,00	—
✓ 60	4/6/2023	30. Ultramarathon Okumusashi	78,00	—
✓ 61	5/6/2022	29. Ultramarathon Okumusashi	78,00	—
✓ 62	2/6/2019	26. Ultramarathon Okumusashi	78,00	—
✓ 63	3/6/2018	25. Ultramarathon Okumusashi	78,00	—
✓ 64	4/6/2017	24. Ultramarathon Okumusashi	78,00	—
✓ 65	5/6/2016	23. Ultramarathon Okumusashi	78,00	—
✓ 66	1/7/2007	13th 8-Hour Endurance Race Tokorozawa	78,00	—
✓ 67	22/6/2015	22. Ultramarathon Okumusashi	77,00	—
✓ 68	27/7/2014	21. Ultramarathon Okumusashi	77,00	—
✓ 69	28/7/2013	20. Ultramarathon Okumusashi	77,00	—
✓ 70	5/8/2012	19. Ultramarathon Okumusashi	77,00	—
✓ 71	7/8/2011	18. Ultramarathon Okumusashi	77,00	—
✓ 72	1/8/2010	17. Ultramarathon Okumusashi	77,00	—
✓ 73	2/8/2009	16. Ultramarathon Okumusashi	75,00	—
✓ 74	3/8/2008	15. Ultramarathon Okumusashi	75,00	—
✓ 75	5/8/2007	14. Ultramarathon Okumusashi	75,00	—
76	13/8/2006	13. Ultramarathon Okumusashi	75,00	—
77	7/8/2005	12. Ultramarathon Okumusashi	75,00	—
78	8/4/2023	18th Toda Saiko 70 km	71,00	—
79	9/4/2022	17th Toda Saiko 70 km	71,00	—
80	19/10/2025	32. Ultramarathon Okumusashi	70,00	—
81	20/10/2024	31. Ultramarathon Okumusashi	70,00	—
82	10/4/2021	16th Toda Saiko 70 km	70,00	—
83	13/4/2019	14th Toda Saiko 70 km	70,00	—
84	14/4/2018	13th Toda Saiko 70 km	70,00	—
85	9/4/2016	11th Toda Saiko 70 km	70,00	—
86	8/7/2012	18th 8-Hour Endurance Race Tokorozawa	64,92	—
87	6/7/2014	20th 8-Hour Endurance Race Tokorozawa	58,43	—
88	6/7/2008	14th 8-Hour Endurance Race Tokorozawa	58,43	—
89	10/7/2011	17th 8-Hour Endurance Race Tokorozawa - 3 tai	55,18	—
90	2/7/2006	12th 8-Hour Endurance Race Tokorozawa	52,80	—
91	7/7/2013	19th 8-Hour Endurance Race Tokorozawa - 3 tai	45,44	—
92	11/4/2026	21st Toda Saiko 8 Hours	45,00	—