Fredrik Forsström

ID 411948

Born : 1971 Cat. M55 Ultrarunner since 2012

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 ?

Czechia

Finland

Switzerland

Sweden

36,3%

Rank quotient ?This runner's calculation uses 48 eligible race(s): Σ(rank − 1) = 1 376; Σ finishers = 3 791. 1 376 / 3 791 × 100 = 36.30%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed48

Km — ultra races7 791 km

> 100 km27

> 160 km21

> 200 km10

> 24h26

> 48h9

Longest race560,4 km

3rd Viadal Ultra Six Days — 13/8/2023

Km per year (ultra races)

272

2022

627

2023

100

2024

110

2025

2026

Race types (share of distance)

Road29,1%

Trail26,4%

Elim.25,0%

Ult.Walk1,3%

?18,2%

Wins & podiums (ultra)

🏆 Win3

🏆 Win M4

🏅 Top 37

🏅 Top 3 M7

Longest winning streak1

Current streak0

Records

50 km4h36'05 100 km11h21'55 50 mi10h39'01 100 mi22h17'01 24 h184,80 km 48 h301,04 km 6 d560,37 km Backyard29 loops

HISTORY

48 race(s) · 21 split(s) nested

Date		Race	Perf.	Rk
2026
02.05	50km	Aros Marathon	6:39:27 h	85
2025
11.10	50km	24th Sörmland Ultra Marathon	6:55:57 h	118
27.06	57h	15 Maratonmarschen (previously Stockholm Fotrally)	60.000 km	48
2024
24.08	100km	Centum	16:01:19 h	1 🏆
2023
13.08	6d	3rd Viadal Ultra Six Days	560.372 km	7
13.08	48h	3rd Viadal Ultra Six Days - 48h split	230.607 km	4
13.08	72h	3rd Viadal Ultra Six Days - 72h split	316.916 km	7
17.06	Backyard Ultra	6 Älvdalen Backyard Ultra	67.060 km (10h)	29
2022
10.12	24h	Personliga Rekordens Tävling - PRT 24h	91.211 km	73
10.12	12h	Personliga Rekordens Tävling - PRT 24h - 12h split	73.947 km	63
21.05	181km	Roslagens Ultra	29:40:39 h	14
2021
22.10	48h	2. 48-Stundenlauf Aare-Insel Brugg	295.751 km	4
22.10	100km	48-Stundenlauf Aare-Insel Brugg - 100km Split	13:34:03 h	13
22.10	100mi	48-Stundenlauf Aare-Insel Brugg - 100mi Split	22:33:49 h	6
09.04	48h	Tärnsjö 48 hours invitational	262.273 km	2 🥈
2020
12.12	81km	Huddingeleden +50 miles	11:59:13 h	19
07.08	200mi	Hallands Ultra-Beach Trailrun (HUB 200 miles)	3d 09:13:00 h	8
23.05	24h	Tärnsjö 24 hours invitational	155.253 km	9
23.05	100km	Tärnsjö 24 hours invitational - 100km Split	13:52:16 h	9
22.02	24h	XIII Endurance 24 h Ultrarun Espoo	175.394 km	28
2019
14.12	24h	Personliga Rekordens Tävling 24 hour	163.575 km	18
14.12	12h	Personliga Rekordens Tävling 24 hour - 12h Split	84.872 km	43
14.12	100km	Personliga Rekordens Tävling 24 hour - 100km Split	14:24:49 h	38
14.12	100mi	Personliga Rekordens Tävling 24 hour - 100mi Split	23:39:33 h	21
21.09	Backyard Ultra	1. Big Shadow Backyard Ultra	73.766 km (11h)	55
26.07	48h	Self-Transcendence Race 48h Kladno	301.040 km	4
26.07	100km	Self-Transcendence Race 48h Kladno - 100km Split	14:24:39 h	12
09.03	Backyard Ultra	Säfsen Vinterbackyard	87.178 km (13h)	17
23.02	24h	XII Endurance 24 h Ultrarun Espoo	156.684 km	41
23.02	12h	XII Endurance 24 h Ultrarun Espoo - 12h Split	83.468 km	88
23.02	100km	XII Endurance 24 h Ultrarun Espoo - 100km Split	14:29:16 h	72
2018
15.12	24h	Personliga Rekordens Tävling 24 hour	168.542 km	11
15.12	100km	Personliga Rekordens Tävling 24 hour - 100km Split	12:57:11 h	24
15.12	100mi	Personliga Rekordens Tävling 24 hour - 100mi Split	22:46:52 h	13
05.07	545km	Trans Sweden 2018	5d 15:45:00 h	5
10.05	Backyard Ultra	Örebro Backyard Ultra	187.768 km (28h)	1 🏆
22.04	50mi	10th Täby Extreme Challenge 50 miles - night	10:39:01 h	6
24.02	24h	XI Endurance 24 h Ultrarun Espoo	172.217 km	27
2017
16.12	24h	Personliga Rekordens Tävling 24 hour	156.711 km	19
16.12	100km	Personliga Rekordens Tävling - 100km Split	14:43:36 h	51
07.10	50km	17th Sörmland Ultra Marathon	5:30:02 h	93
17.06	Backyard Ultra	Örebro Backyard Ultra	167.650 km (25h)	2 🥈
20.05	54km	Lida Ultra Marathon 54km	6:56:02 h	17
29.04	Backyard Ultra	1. Trosa Backyard Ultra	140.826 km (21h)	12
2016
08.10	50km	16th Sörmland Ultra Marathon	5:02:08 h	83
09.07	Backyard Ultra	Lurs Backyard Ultra	194.474 km (29h)	3 🥉
11.06	68km	Jättelångt 68 km Trail	7:44:48 h	36
15.04	200mi	8th Täby Extreme Challenge 200 miles	2d 04:38:55 h	4
20.03	75km	17. Ursvik Ultra 75 km	10:18:06 h	36
2015
14.08	246km	6. Trans Scania	2d 01:50:40 h	8
25.06	88h	7. Stockholm Fotrally	438.750 km	1 🏆
03.05	50km	Lidingö Ultra 50 km	4:36:05 h	37
22.03	75km	16. Ursvik Ultra 75 km	9:31:29 h	38
21.02	24h	VIII Endurance 24 h Ultrarun Helsinki	184.799 km	15
21.02	6h	VIII Endurance 24 h Ultrarun Helsinki - 6h Split	54.606 km	40
21.02	50mi	VIII Endurance 24 h Ultrarun Helsinki - 50mi Split	9:15:29 h	36
21.02	100km	VIII Endurance 24 h Ultrarun Helsinki - 100km Split	11:34:38 h	28
21.02	12h	VIII Endurance 24 h Ultrarun Helsinki - 12h Split	103.360 km	25
21.02	100mi	VIII Endurance 24 h Ultrarun Helsinki - 100mi Split	20:25:17 h	22
2014
26.06	55h	6. Stockholm Fotrally	241.500 km	5
17.05	89km	Lida Ultra Marathon 89km	11:40:09 h	8
03.05	50km	Lidingö Ultra 50 km	4:51:32 h	103
2013
14.12	24h	Personliga Rekordens Tävling 24 hour	150.477 km	9
14.12	100km	Personliga Rekordens Tävling 24 hour - 100km Split	11:44:45 h	9
21.09	100mi	Black River Run 100 Miles	22:17:01 h	14
04.08	100km	Stockholm 100 km Ultramarathon	11:21:55 h	89
27.06	49h	5. Stockholm Fotrally	167.167 km	3 🥉
04.05	50km	Lidingö Ultra 50 km	5:06:29 h	139
2012
28.06	51h	4. Stockholm Fotrally	121.667 km	20

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	13/8/2023	3rd Viadal Ultra Six Days	560,37	×7
✓ 2	5/7/2018	Trans Sweden 2018	545,00	×6
✓ 3	25/6/2015	7. Stockholm Fotrally	438,75	×5
✓ 4	7/8/2020	Hallands Ultra-Beach Trailrun (HUB 200 miles)	321,87	×4
✓ 5	15/4/2016	8th Täby Extreme Challenge 200 miles	321,87	×4
✓ 6	26/7/2019	Self-Transcendence Race 48h Kladno	301,04	×3
✓ 7	22/10/2021	2. 48-Stundenlauf Aare-Insel Brugg	295,75	×3
✓ 8	9/4/2021	Tärnsjö 48 hours invitational	262,27	×3
✓ 9	14/8/2015	6. Trans Scania	246,00	×3
✓ 10	26/6/2014	6. Stockholm Fotrally	241,50	×3
✓ 11	9/7/2016	Lurs Backyard Ultra	194,47	×2
✓ 12	10/5/2018	Örebro Backyard Ultra	187,77	×2
✓ 13	21/2/2015	VIII Endurance 24 h Ultrarun Helsinki	184,80	×2
✓ 14	21/5/2022	Roslagens Ultra	181,00	×2
✓ 15	22/2/2020	XIII Endurance 24 h Ultrarun Espoo	175,39	×2
✓ 16	24/2/2018	XI Endurance 24 h Ultrarun Espoo	172,22	×2
✓ 17	15/12/2018	Personliga Rekordens Tävling 24 hour	168,54	×2
✓ 18	17/6/2017	Örebro Backyard Ultra	167,65	×2
✓ 19	27/6/2013	5. Stockholm Fotrally	167,17	×2
✓ 20	14/12/2019	Personliga Rekordens Tävling 24 hour	163,58	×2
✓ 21	21/9/2013	Black River Run 100 Miles	160,93	×2
✓ 22	16/12/2017	Personliga Rekordens Tävling 24 hour	156,71	×2
✓ 23	23/2/2019	XII Endurance 24 h Ultrarun Espoo	156,68	×2
✓ 24	23/5/2020	Tärnsjö 24 hours invitational	155,25	×1
✓ 25	14/12/2013	Personliga Rekordens Tävling 24 hour	150,48	×1
✓ 26	29/4/2017	1. Trosa Backyard Ultra	140,83	×1
✓ 27	28/6/2012	4. Stockholm Fotrally	121,67	×1
✓ 28	24/8/2024	Centum	100,00	×1
✓ 29	4/8/2013	Stockholm 100 km Ultramarathon	100,00	×1
✓ 30	10/12/2022	Personliga Rekordens Tävling - PRT 24h	91,21	×1
✓ 31	17/5/2014	Lida Ultra Marathon 89km	89,00	×1
✓ 32	9/3/2019	Säfsen Vinterbackyard	87,18	×1
✓ 33	12/12/2020	Huddingeleden +50 miles	81,00	×1
✓ 34	22/4/2018	10th Täby Extreme Challenge 50 miles - night	80,47	×1
✓ 35	20/3/2016	17. Ursvik Ultra 75 km	75,00	—
✓ 36	22/3/2015	16. Ursvik Ultra 75 km	75,00	—
✓ 37	21/9/2019	1. Big Shadow Backyard Ultra	73,77	—
✓ 38	11/6/2016	Jättelångt 68 km Trail	68,00	—
✓ 39	17/6/2023	6 Älvdalen Backyard Ultra	67,06	—
✓ 40	27/6/2025	15 Maratonmarschen (previously Stockholm Fotrally)	60,00	—
✓ 41	20/5/2017	Lida Ultra Marathon 54km	54,00	—
✓ 42	2/5/2026	Aros Marathon	50,00	—
✓ 43	11/10/2025	24th Sörmland Ultra Marathon	50,00	—
✓ 44	7/10/2017	17th Sörmland Ultra Marathon	50,00	—
✓ 45	8/10/2016	16th Sörmland Ultra Marathon	50,00	—
✓ 46	3/5/2015	Lidingö Ultra 50 km	50,00	—
✓ 47	3/5/2014	Lidingö Ultra 50 km	50,00	—
✓ 48	4/5/2013	Lidingö Ultra 50 km	50,00	—