In order to establish a method for evaluating everbearing strength in everbearing strawberry cultivars, the relationship between the nodal position of the first inflorescence in first-year runner plants and the everbearing strength was investigated. The nodal position of the first inflorescence was affected by the potting date and varied among cultivars. Potting on 24 June and 16 July led to a higher nodal position of the first inflorescence compared to potting on 14 May. A significant negative correlation was shown between the nodal position of the first inflorescence and the total number of inflorescences per plant. The 19 everbearing cultivars could be classified based on the average nodal position of the first inflorescence on 24 June and 16 July. It was found that cultivars with a lower nodal position of the first inflorescence were stronger in everbearing strength. Consequently, it was concluded that the nodal position of the first inflorescence in first-year runner plants is a suitable evaluation criterion for everbearing strength, and the potting of runner plants for evaluating is appropriate from late June to middle July.