Jon Day

Born : 1984 Cat. M40 Ultrarunner since 2013

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 ?

United Kingdom

South Africa

Switzerland

24,3%

Rank quotient ?This runner's calculation uses 4 eligible race(s): Σ(rank − 1) = 6 204; Σ finishers = 25 569. 6 204 / 25 569 × 100 = 24.26%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed4

Km — ultra races270 km

Longest race89,0 km

89th Comrades Marathon - Down Run — 1/6/2014

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road65,2%

Trail34,8%

Records

No record for a classic ultra format

HISTORY

4 race(s)

Date		Race	Perf.	Rk
2019
31.08	30mi	The Conquest of Avalon 30	5:19:31 h	14
2015
31.05	87km	90th Comrades Marathon - Up Run	9:15:13 h	2366
2014
01.06	89km	89th Comrades Marathon - Down Run	9:49:53 h	3738
2013
06.07	45.5km	2. Zermatt Ultra Marathon	5:36:22 h	90

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Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	1/6/2014	89th Comrades Marathon - Down Run	89,00	×5
✓ 2	31/5/2015	90th Comrades Marathon - Up Run	87,00	×5
✓ 3	31/8/2019	The Conquest of Avalon 30	48,28	×3
✓ 4	6/7/2013	2. Zermatt Ultra Marathon	45,50	×3