v3.25.4
Cover
4 Months Ended
Dec. 31, 2025
Entity Addresses [Line Items]  
Document Type S-4/A
Amendment Flag true
Amendment Description AMENDMENT NO 2
Entity Registrant Name Boost Run Inc.
Entity Central Index Key 0002090646
Entity Tax Identification Number 39-4824850
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 5 Revere Drive
Entity Address, Address Line Two Suite 200
Entity Address, City or Town Northbrook
Entity Address, State or Province IL
Entity Address, Postal Zip Code 60062
City Area Code (847)
Local Phone Number 489-3367
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false
Business Contact [Member]  
Entity Addresses [Line Items]  
Entity Address, Address Line One 5 Revere Drive
Entity Address, Address Line Two Suite 200
Entity Address, City or Town Northbrook
Entity Address, State or Province IL
Entity Address, Postal Zip Code 60062
City Area Code (847)
Local Phone Number 489-3367
Contact Personnel Name Andrew Karos