Race-day weather · Wyndo for runners
Indianapolis Monumental Marathon weather
November 7, 2026 · Indianapolis, IN · scheduled start 8:00 AM (America/Indiana/Indianapolis). What the start usually feels like, year by year — and a live start-time read once the race is inside the 7-day forecast window.
Countdown
108 days to race day
The live race-day forecast unlocks 102 days from now, when November 7, 2026 enters the 7-day forecast window — a start-time read for the scheduled 8:00 AM start. Until then, live hourly data is not available; the history below shows what race morning usually looks like.
Race-morning weather history
Reliably cool PR weather is the brand — typical start temps in the 30s-40s F. Wyndo tracks what this calendar slot has actually served up at the start hour — temperature, dew point, wind, and rain — including the years when weather canceled or disrupted the race, and reads the live forecast for the start once race week arrives.
The Indianapolis Monumental Marathon moves around the calendar year to year (Saturday in early November (1st or 2nd Saturday; 2026 is the 1st Saturday)), so there's no fixed slot for year-by-year history. A table based on estimated dates could put the race in the wrong weather, so we don't show one. We're sourcing the real past edition dates by hand; the history lands here when they do.
Your heat-adjusted goal for the marathon
The same cited model as the full calculator, pointed at this race: once this race's history is assembled, the typical start-hour conditions plug in here automatically.
Racing this one?
Skip the taper-week refresh spiral. Turn on race-day emails for the Indianapolis Monumental Marathon: the first outlook when it enters the 7-day forecast window, updates only when it changes meaningfully, and a final look the day before.
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The first race-day outlook when your race enters the 7-day forecast window, an update when it changes meaningfully, and a final look the day before.
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Race facts
- Start line
- West St just south of Maryland St, downtown (near Victory Field / Indiana Convention Center)
- Scheduled start
- 8:00 AM (America/Indiana/Indianapolis) — Official 2026 race page lists 8:00 AM; marathon and half share the start in six seeded waves (A-F) by predicted finish time.
- Field size
- 2025 marathon finishers 6,674; record-sellout 17,500 total across marathon/half/5K
- Registration
- open (sells out; 2025 was a record sellout)
Wyndo is not affiliated with or endorsed by the Indianapolis Monumental Marathon (officially the "CNO Financial Indianapolis Monumental Marathon") or its organizers. Race names are used descriptively to identify the event; schedules and start times belong to the race — always confirm details on the official site. Weather guidance here is informational, never medical advice, and event alert flags on race day belong to the race's own medical team.