Marathon Winner is a sports series on Kalshi, with markets like “Will Fabienne Königstein win the New York City Marathon Women's Open Division?”. The Kalshi Eye archive lists 158 of its markets and has 13 days of daily Parquet files from October 12, 2026 to October 24, 2026 (3 MB), with every order book change and trade.

Venue: Kalshi, series KXMARATHON
Category: Sports
Markets: 158 (85 settled, 73 open)
Files: 13 days, October 12, 2026 to October 24, 2026, 3 MB, 697,361 rows
Datasets: Order book (L2, incremental), Order book snapshots (top 10, 1 second), Top of book (every change), Top of book (1-minute bars), Trades

Open Marathon Winner in Markets to see every day and market, then export the days you need. Free sample files of each dataset are on the Kalshi data page.

Reading the files

Every KXMARATHON trade on October 24, 2026, in DuckDB:

SELECT ts_recv, ticker, yes_price, size, taker_side
FROM 'kalshieye-data/trades/date=2026-10-24/series=KXMARATHON/trades-KXMARATHON-2026-10-24.parquet'
ORDER BY ts_recv;

To test a strategy on this series, see How to backtest Kalshi markets.

Related Kalshi series

College Football 1st Half Winner (KXNCAAF1H): 1,451 markets, 13 days of files
College Football Award Winner (KXNCAAFAWARD): 1,049 markets, 13 days of files
WTA Set Winner (KXWTASETWINNER): 968 markets, 13 days of files
Dota 2 Map Winner (KXDOTA2MAP): 834 markets, 13 days of files
DP World Tour Tournament Winner (KXDPWORLDTOUR): 397 markets, 11 days of files
NHL 3rd Period Winner (KXNHL3P): 392 markets, 13 days of files

Figures through October 24, 2026. All Kalshi series with pages are listed on Kalshi series.