Observed arrival · 2026-10-13
iRun42 maps the trade-offs behind choosing a race
A race-finding and comparison tool for marathons, half marathons, and ultras worldwide, with filters for date, terrain, elevation, weather, and entry fee.
- For
- Runners comparing races and planning race weekends
- Worth noticing
- The site cites Open-Meteo (ERA5) for weather and labels dates, fees, and entry rules as approximate.
Field notes
Race listings show location, date, distance, elevation gain, estimated start temperature, entry price, and entry rules; sample cards include upcoming events from Amsterdam to Honolulu. The site says its weather data uses Open-Meteo (ERA5), and its planning workflow also points users toward finish-time estimates, hotels near start lines, and race-weekend flights. It cautions that dates, fees, and entry rules should be checked with the official race site.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue