v3.26.1
Cover - $ / shares
 3 Months Ended
Mar. 31, 2026
Jun. 01, 2026
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Mar. 31, 2026  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --12-31  
Entity File Number 001-43277  
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 Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Elected Not To Use the Extended Transition Period false  
Entity Shell Company false  
Class A Common Stock, Par Value $0.0001 Per Share [Member]    
Title of 12(b) Security Class A Common Stock, par value $0.0001 per share  
Trading Symbol BRUN  
Security Exchange Name NASDAQ  
WarrantsEach Whole Warrant Is Exercisable For One Share Of Class Common Stock At Exercise Price Of 11.50 Per Share [Member]    
Title of 12(b) Security Warrants, each whole warrant is exercisable for one share of Class A Common Stock at an exercise price of $11.50 per share  
Trading Symbol BRUNW  
Security Exchange Name NASDAQ  
Common Class A [Member]    
Entity Common Stock, Shares Outstanding   31,895,656
Entity Listing, Par Value Per Share $ 0.0001  
Common Class B [Member]    
Entity Common Stock, Shares Outstanding   29,533,018
Entity Listing, Par Value Per Share $ 0.0001