Milden Heritage Days began in 1985 when a group of farmers decided to start an antique farming demonstration for the local residents as well as visitors. The demonstration developed into the "Milden Heritage Days." This event was held every year on the Canadian Thanksgiving weekend in October.

The day started with a pancake breakfast at the local school and then moved out to the fair grounds for the parade of tractors, steam engines, separators and antique vehicles. Lunch was served in a large tent that was set up specifically for the occasion and consists of roast beef on a bun and one of the best tasting pies on earth, Saskatoon Berry.

The afternoon activities consist of steam versus vintage gas-powered tractors. These tractors were hooked up to antique separators and used in the field to thresh oats. There were also antique combines harvesting in the field, horse powered binder grain cutting and a stook loading demonstration.

The evening brought Gospel Concert after a community fall supper. The last part of the celebration was a dance at the Elks Hall.

This event is no longer held.