And we were among the thousands of fans, who sang their hearts out and nearly witnessed an FA Cup miracle.
Despite the result (5-3 to Reading), those fans who went can say 'we were there on the biggest day in our club's history'.
Click here to read the report: 'Our proudest moment' - heartbreak for Harborough in the FA Cup but it was a day we will never forget
Here are some of our photos from that memorable day.
13. After the game
Mutual appreciation between the Harborough fans and players Photo: Phil Hibble
14. Harborough fans at the Reading game
Harborough fans during the game (including a happy youngster in the bottom right!). Photo: Phil Hibble
15. Harborough fans at the Reading game
Harborough fans thank the players at the final whistle - and players thank them in return. Photo: Phil Hibble
16. Harborough fans at the Reading game
The award for the best headwear goes to these two! Photo: Phil Hibble
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