-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 P7nv0uF4Z4yyNKr+lvENuNndjkmIrfLS5KwznraqywrQoeHdz+Bx6YkgLUE8ldTL
 gQzzEvuM1YzKfKVr15HJVg==

<SEC-DOCUMENT>0001227430-10-000043.txt : 20100812
<SEC-HEADER>0001227430-10-000043.hdr.sgml : 20100812
<ACCEPTANCE-DATETIME>20100812102716
ACCESSION NUMBER:		0001227430-10-000043
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100812
FILED AS OF DATE:		20100812
DATE AS OF CHANGE:		20100812

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DUNN MICHAEL J JR
		CENTRAL INDEX KEY:			0001212609

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14222
		FILM NUMBER:		101009799

	MAIL ADDRESS:	
		STREET 1:		C/O SUBURBAN PROPANE PARTNERS LP
		STREET 2:		P O BOX 206
		CITY:			WHIPPANY
		STATE:			NJ
		ZIP:			07981

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SUBURBAN PROPANE PARTNERS LP
		CENTRAL INDEX KEY:			0001005210
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-MISCELLANEOUS RETAIL [5900]
		IRS NUMBER:				223410353
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		P O BOX 206
		STREET 2:		240 ROUTE 10 WEST
		CITY:			WIPPANY
		STATE:			NJ
		ZIP:			07981
		BUSINESS PHONE:		9738875300

	MAIL ADDRESS:	
		STREET 1:		ONE SUBURBAN PLZ
		STREET 2:		240 RTE 10 WEST
		CITY:			WHIPPANY
		STATE:			NJ
		ZIP:			07981
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-08-12</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001005210</issuerCik>
        <issuerName>SUBURBAN PROPANE PARTNERS LP</issuerName>
        <issuerTradingSymbol>SPH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001212609</rptOwnerCik>
            <rptOwnerName>DUNN MICHAEL J JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SUBURBAN PROPANE PARTNERS LP</rptOwnerStreet1>
            <rptOwnerStreet2>P O BOX 206</rptOwnerStreet2>
            <rptOwnerCity>WHIPPANY</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07981</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Units (representing limited partnership interests)</value>
            </securityTitle>
            <transactionDate>
                <value>2010-08-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>7183</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>47.49</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>113729</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <remarks>The transactions reported herein were all effected pursuant to a Rule 10b5-1 trading plan established by Mr. Dunn in May 2010.</remarks>

    <ownerSignature>
        <signatureName>Paul Abel, by power of attorney</signatureName>
        <signatureDate>2010-08-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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