Jonas Bergström

Born : 1975 Cat. M50 Ultrarunner since 2017

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 ?

Sweden

25,0%

Rank quotient ?This runner's calculation uses 19 eligible race(s): Σ(rank − 1) = 489; Σ finishers = 1 956. 489 / 1 956 × 100 = 25.00%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed19

Km — ultra races2 329 km

> 100 km13

> 160 km7

> 24h7

> 48h4

Longest race184,0 km

Black River Run 100 Miles — 10/9/2022

Km per year (ultra races)

484

2022

645

2023

263

2024

2025

275

2026

Race types (share of distance)

Road6,9%

Trail49,2%

Elim.43,9%

Wins & podiums (ultra)

🏆 Win2

🏆 Win M2

🏅 Top 32

🏅 Top 3 M2

Longest winning streak1

Current streak0

Records

50 km6h57'03 50 mi10h16'51 100 mi21h03'18 Backyard27 loops

HISTORY

19 race(s)

Date		Race	Perf.	Rk
2026
29.05	100mi	4 Öland Lighthouse Challenge - 100 miles	22:29:29 h	8
17.04	Backyard Ultra	8 Tyresö Extreme Challenge (TEC) - Backyard	114.002 km (17h)	1 🏆
2024
23.11	82km	Huddingeleden +50 miles	10:46:40 h	8
18.05	Backyard Ultra	3 Backyard Ultra Vänge	181.062 km (27h)	1 🏆
2023
03.11	161km	Kullamannen Ultra 100 miles	23:16:56 h	125
16.09	100mi	Black River Run 100 Miles	21:03:18 h	12
22.07	162.3km	The Gax 100 miles	22:14:00 h	21
22.04	160.7km	15 Täby Extreme Challenge 100 miles	22:30:37 h	17
2022
04.11	103km	Kullamannen Sprint Ultra 100 km	14:28:21 h	69
10.09	184km	Black River Run 100 Miles	21:47:50 h	15
01.07	56h	12. Maratonmarschen (previously Stockholm Fotrally)	60.000 km	78
30.04	Backyard Ultra	5. Trosa Backyard Ultra	87.178 km (13h)	15
19.02	50km	Höga Kusten Winter Trail	6:57:03 h	6
2021
10.07	20h	Trainyard Ultra	80.400 km	5
2020
12.12	81km	Huddingeleden +50 miles	10:16:51 h	7
24.10	Backyard Ultra	2. Lidingö Backyard Ultra	134.120 km (20h)	6
2019
28.06	75h	11. Maratonmarschen (previosly Stockholm Fotrally)	126.830 km	32
2018
29.06	88h	10. Maratonmarschen (previously Stockholm Fotrally)	120.000 km	34
2017
29.06	81h	9. Stockholm Fotrally	120.000 km	48

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	10/9/2022	Black River Run 100 Miles	184,00	×4
✓ 2	18/5/2024	3 Backyard Ultra Vänge	181,06	×4
✓ 3	22/7/2023	The Gax 100 miles	162,30	×3
✓ 4	3/11/2023	Kullamannen Ultra 100 miles	161,00	×3
✓ 5	29/5/2026	4 Öland Lighthouse Challenge - 100 miles	160,93	×3
✓ 6	16/9/2023	Black River Run 100 Miles	160,93	×3
✓ 7	22/4/2023	15 Täby Extreme Challenge 100 miles	160,70	×3
✓ 8	24/10/2020	2. Lidingö Backyard Ultra	134,12	×3
✓ 9	28/6/2019	11. Maratonmarschen (previosly Stockholm Fotrally)	126,83	×2
✓ 10	29/6/2018	10. Maratonmarschen (previously Stockholm Fotrally)	120,00	×2
✓ 11	29/6/2017	9. Stockholm Fotrally	120,00	×2
✓ 12	17/4/2026	8 Tyresö Extreme Challenge (TEC) - Backyard	114,00	×2
✓ 13	4/11/2022	Kullamannen Sprint Ultra 100 km	103,00	×2
✓ 14	30/4/2022	5. Trosa Backyard Ultra	87,18	×2
✓ 15	23/11/2024	Huddingeleden +50 miles	82,00	×1
✓ 16	12/12/2020	Huddingeleden +50 miles	81,00	×1
✓ 17	10/7/2021	Trainyard Ultra	80,40	×1
✓ 18	1/7/2022	12. Maratonmarschen (previously Stockholm Fotrally)	60,00	×1
✓ 19	19/2/2022	Höga Kusten Winter Trail	50,00	×1