Fritz Sonder

Born : 1930 Cat. M95 Ultrarunner since 1969

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

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 ?

Switzerland

18,7%

Rank quotient ?This runner's calculation uses 20 eligible race(s): Σ(rank − 1) = 8 057; Σ finishers = 43 177. 8 057 / 43 177 × 100 = 18.66%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed20

Km — ultra races1 967 km

Longest race100,0 km

40. 100 km Lauf Biel — 12/6/1998

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road96,6%

Trail3,4%

Records

100 km9h18'01

HISTORY

20 race(s)

Date		Race	Perf.	Rk
1998
12.06	100km	40. 100 km Lauf Biel	13:03:43 h	1117
1995
09.06	100km	37. 100 km Lauf Biel	13:12:26 h	1024
1990
28.07	67km	5. Swiss Alpine Marathon	9:54:14 h	937
08.06	100km road race	32. 100 km Lauf Biel	11:20:32 h	794
1989
02.06	100km road race	31. 100 km Lauf Biel	11:24:00 h	791
1985
03.11	100km	100 km Geneve - Preverenges - Geneve, 3° memorial 1892	9:18:01 h	98
07.06	100km road race	27. 100 km Lauf Biel	9:26:00 h	275
1984
15.06	100km road race	26. 100 km Lauf Biel	9:46:00 h	452
1981
12.06	100km road race	23. 100 km Lauf Biel	9:52:00 h	273
1980
06.06	100km road race	22. 100 km Lauf Biel	11:34:00 h	552
1978
16.06	100km road race	20. 100 km Lauf Biel	9:56:00 h	198
1977
10.06	100km road race	19. 100 km Lauf Biel	11:22:00 h	337
1976
25.06	100km road race	18. 100 km Lauf Biel	10:22:00 h	211
1975
13.06	100km road race	17. 100 km Lauf Biel	10:05:00 h	96
1974
07.06	100km road race	16. 100 km Lauf Biel	11:10:00 h	180
1973
15.06	100km road race	15. 100 km Lauf Biel	10:25:00 h	89
1972
09.06	100km	14. 100 km Lauf Biel	11:24:00 h	109
1971
11.06	100km	13. 100 km Lauf Biel	12:26:00 h	163
1970
12.06	100km	12. 100 km Lauf Biel	13:31:00 h	205
1969
13.06	100km	11. 100 km Lauf Biel	13:46:00 h	176

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	12/6/1998	40. 100 km Lauf Biel	100,00	×2
✓ 2	9/6/1995	37. 100 km Lauf Biel	100,00	×2
✓ 3	8/6/1990	32. 100 km Lauf Biel (SUI)	100,00	×2
✓ 4	2/6/1989	31. 100 km Lauf Biel (SUI)	100,00	×2
✓ 5	3/11/1985	100 km Geneve - Preverenges - Geneve, 3° memorial 1892	100,00	×2
✓ 6	7/6/1985	27. 100 km Lauf Biel (SUI)	100,00	×2
✓ 7	15/6/1984	26. 100 km Lauf Biel (SUI)	100,00	×2
✓ 8	12/6/1981	23. 100 km Lauf Biel (SUI)	100,00	×2
✓ 9	6/6/1980	22. 100 km Lauf Biel (SUI)	100,00	×2
✓ 10	16/6/1978	20. 100 km Lauf Biel (SUI)	100,00	×2
✓ 11	10/6/1977	19. 100 km Lauf Biel (SUI)	100,00	×2
✓ 12	25/6/1976	18. 100 km Lauf Biel (SUI)	100,00	×2
✓ 13	13/6/1975	17. 100 km Lauf Biel (SUI)	100,00	×2
✓ 14	7/6/1974	16. 100 km Lauf Biel (SUI)	100,00	×2
✓ 15	15/6/1973	15. 100 km Lauf Biel (SUI)	100,00	×2
✓ 16	9/6/1972	14. 100 km Lauf Biel	100,00	×2
✓ 17	11/6/1971	13. 100 km Lauf Biel	100,00	×2
✓ 18	12/6/1970	12. 100 km Lauf Biel	100,00	×2
✓ 19	13/6/1969	11. 100 km Lauf Biel	100,00	×2
✓ 20	28/7/1990	5. Swiss Alpine Marathon	67,00	×1