<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2021-10-07</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001869198</issuerCik>
        <issuerName>Life Time Group Holdings, Inc.</issuerName>
        <issuerTradingSymbol>LTH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001447247</rptOwnerCik>
            <rptOwnerName>Partners Group Private Equity (Master Fund), LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PARTNERS GROUP (USA) INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1200 ENTREPRENURIAL DRIVE</rptOwnerStreet2>
            <rptOwnerCity>BROOMFIELD</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80021</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001756041</rptOwnerCik>
            <rptOwnerName>Partners Group Private Equity II, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PARTNERS GROUP (USA) INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1200 ENTREPRENURIAL DRIVE</rptOwnerStreet2>
            <rptOwnerCity>BROOMFIELD</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80021</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6000000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Series A Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>301571</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">3,132,000 of such shares of Life Time Group Holdings, Inc.'s (the &quot;Issuer&quot;) common stock (the &quot;Common Stock&quot;) are directly held by Partners Group Private Equity (Master Fund), LLC (&quot;PG Master Fund&quot;) and 2,868,000 of such shares are directly held by Partners Group Series Access II, LLC, Series 61 (&quot;PG Series 61&quot;). PG Master Fund and PG Series 61 are indirectly controlled by Partners Group Holding AG (&quot;Partners Group&quot;).  Each of PG Master Fund and PG Series 61 disclaims beneficial ownership of any securities that it does not directly beneficially own, except to the extent of its pecuniary interest, if any, therein.</footnote>
        <footnote id="F2">Each share of Series A Preferred Stock will automatically convert into Common Stock upon the closing of the Issuer's initial public offering for no additional consideration, in accordance with the Certificate of Designations of the Series A Preferred Stock. The Series A Preferred Stock has no expiration date.</footnote>
        <footnote id="F3">PG Master Fund directly holds 140,583 shares of the Issuer's Series A Preferred Stock (the &quot;Series A Preferred Stock&quot;), Partners Group Private Equity II, LLC (&quot;PG PE II&quot;) directly holds 3,218 shares of Series A Preferred Stock and Partners Group Access 83 PF LP (&quot;PG Access 83&quot;) directly holds 101,055 shares of Series A Preferred Stock.  PG PE II and PG Access 83 are indirectly controlled by Partners Group. Each of PG Master Fund, PG PE II and PG Access 83 disclaims beneficial ownership of any securities that it does not directly beneficially own, except to the extent of its pecuniary interest, if any, therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>By: /s/ Justin Rindos, Chief Financial Officer, Partners Group Private Equity (Master Fund), LLC</signatureName>
        <signatureDate>2021-10-07</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Justin Rindos, Authorized Signatory of the advisor to Partners Group Private Equity II, LLC</signatureName>
        <signatureDate>2021-10-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
