-----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,
 B4Ern5IJHzojwiyOG7cgBqM83eW/+kcl38SVXKSfxNkBaEuRacEPlcdpXNJH6HZf
 X7zJDjx2aUr1TQ4AGKeUdA==

<SEC-DOCUMENT>0000065103-07-000171.txt : 20070712
<SEC-HEADER>0000065103-07-000171.hdr.sgml : 20070712
<ACCEPTANCE-DATETIME>20070712125415
ACCESSION NUMBER:		0000065103-07-000171
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070706
FILED AS OF DATE:		20070712
DATE AS OF CHANGE:		20070712

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BLACKROCK LTD DURATION INCOME TRUST
		CENTRAL INDEX KEY:			0001233681
		IRS NUMBER:				200096695
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1031

	BUSINESS ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		STREET 2:		MUTUAL FUND DEPARTMENT
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809
		BUSINESS PHONE:		888-825-227

	MAIL ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		STREET 2:		MUTUAL FUND DEPARTMENT
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLACKROCK LIMITED DURATION INCOME TRUST
		DATE OF NAME CHANGE:	20030611

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLACKROCK MANAGED DURATION INCOME TRUST
		DATE OF NAME CHANGE:	20030529

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLACKROCK MANAGED DURATION TRUST
		DATE OF NAME CHANGE:	20030516

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BOOTH KEVIN
		CENTRAL INDEX KEY:			0001156190

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-21349
		FILM NUMBER:		07975930

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		6092820785

	MAIL ADDRESS:	
		STREET 1:		800 SCUDDERS MILL ROAD
		CITY:			PLAINSBORO
		STATE:			NJ
		ZIP:			08536
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2007-07-06</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001233681</issuerCik>
        <issuerName>BLACKROCK LTD DURATION INCOME TRUST</issuerName>
        <issuerTradingSymbol>BLW</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001156190</rptOwnerCik>
            <rptOwnerName>BOOTH KEVIN</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>BLACKROCK, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>40 EAST 52ND STREET</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022-5911</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Portfolio Manager</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Catherine Johnston</signatureName>
        <signatureDate>2007-07-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
