County finished 23 points ahead of Spireites in the regular season and are odds on with Paddy Power to be playing League Two football next season.
But, as we all know, anything can happen on the day with Spireites more than fancying their chances.
Chesterfield know that winning feeling at Wembley after victory over Bury in the 1994/95 Third Division play-off final and Swindon Town in the JPT in 2012.
Spireites have also lost in the national stadium against Cambridge United in the 1989/90 Fourth Division play-off final and Peterborough United in the JPT in 2014.
Here we take a look back at those games with these cracking fans and match pictures.
Get all the build-up to the big game here.
17. Swindon v Chesterfield - 2012
Tommy Lee celebrates victory over Swindon Town. Photo: National World
18. Swindon Town v Chesterfield - 2012
Jordan Bowery (R) wins a header against Oliver Risser during the Johnstone's Paint trophy Final between Swindon Town and Chesterfield at Wembley Stadium on March 25, 2012. Photo: Scott Heavey
19. Chesterfield v Peterborough United - 2014
Tempers flare between the two sides during the Johnstone's Paint Trophy Final between Chesterfield and Peterborough United at Wembley Stadium on March 30, 2014. Photo: Ben Hoskins
20. Swindon Town v Chesterfield - 2012
Simon Ferry (L) in action with Alex Mendy during the Johnstone's Paint trophy Final between Swindon Town and Chesterfield at Wembley Stadium on March 25, 2012. Photo: Scott Heavey