v3.26.1
Cover Page - shares
 3 Months Ended
Mar. 31, 2026
May 04, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Mar. 31, 2026  
Entity File Number 001-40315  
Entity Registrant Name ONKURE THERAPEUTICS, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 47-2309515  
Entity Address, Address Line One 6707 Winchester Circle, Suite 400  
Entity Address, City or Town Boulder  
Entity Address State or Province CO  
Entity Address, Postal Zip Code 80301  
City Area Code 720  
Local Phone Number 307-2892  
Title of 12(b) Security Common Stock, par value $0.0001 per share  
Trading Symbol OKUR  
Security Exchange Name NASDAQ  
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  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   40,395,480
Entity Central Index Key 0001637715  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Amendment Flag false