Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2026	May 08, 2026
Document Information [Line Items]
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0002063380
Document Fiscal Period Focus	Q1
Amendment Flag	false
Title of 12(b) Security	Fidelity® Solana Fund Shares
Trading Symbol	FSOL
Security Exchange Name	NYSEArca
Document Period End Date	Mar. 31, 2026
Document Fiscal Year Focus	2026
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-42958
Entity Registrant Name	Fidelity® Solana Fund
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	245 Summer Street V13E
Entity Address, City or Town	Boston
Entity Address, State or Province	MA
Entity Tax Identification Number	39-6898315
Entity Address, Postal Zip Code	02210
City Area Code	800
Local Phone Number	343-3548
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		10,975,000