Triathlon Lab

Races

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Open the full race catalog and use the complete search, country, brand, and distance filters.

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Race families

Distance

140.6Full distance 70.3Half distance 100KMiddle distance OlympicShort course SprintSpeed races

Featured hubs

IRONMAN HamburgRace hub WTCS HamburgWTCS series T100 SingaporeT100 series

Athletes

Athlete intelligence

Search the combined athlete catalog, then switch between pro and age-group context as needed.

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Athlete filterPro athletesElite profiles, scorecards, race history Athlete filterAge-group athletesIRONMAN/WTC profiles in the same athlete table

Rankings

Ranking models

Open the right ranking table

Race-feed rankings and Triathlon Lab power indexes for current pro form.

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Race rankings

IRONMAN Pro SeriesOfficial series

T100 Race RankingsT100 only

WTCS Race RankingsWorld Triathlon

Power rankings

Long-Course Power Index70.3 + T100 Full-Distance SpecialistsFull IM first Middle-Distance Specialists70.3/T100 first Short-Course SpecialistsWTCS required

Start List Explorer

Start-list explorer

Podium pick research

Research a start list with linked athlete profiles, recent form, scorecards, and course context.

Open explorer

Research workspace

Podium Pick ResearchStart-list explorer Prediction ReviewCompleted race audits Pro RankingsForm input

Useful context

Race CatalogCourse and result hubs Athlete SearchProfile lookup

ToolsWIP

Research tools

Find the right research path

A compact set of working tools for planning, searching results, and choosing races.

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Planning

Kona FinderSlot-fit planner Race FinderCourse and race catalog

Reference

World Triathlon ReferenceOfficial context ChangelogUpdates

Pro Age Group

Building race view...

Back to athletes

Master athlete

Mark Rietveld

Unified profile powered by master athlete and result tables.

maleNLCurrent proViewing Pro

Links>

World Triathlon

IDs>

Birth year1967WT ID203304

Pro results

AG results

Races

Best finish

#26

Race history

1 results

2025 NED Cross Triathlon National Championships - Elite Men

Aug 30, 2025olympic

#26

Place

Finish

02:35:26

Swim

00:25:12

Bike

01:13:50

Run

00:52:41

		Race							Finish
26	-	NED Cross Triathlon National Championships - Elite Men 2025MPROOlympic	Aug 30, 2025	00:25:12 1:41/100m	00:02:02	01:13:50 15.1 mph	00:01:39	00:52:41 7:42/mi	02:35:26