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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2020-07-15</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001812364</issuerCik>
        <issuerName>Relay Therapeutics, Inc.</issuerName>
        <issuerTradingSymbol>RLAY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001817592</rptOwnerCik>
            <rptOwnerName>SVF Pauling (Cayman) Ltd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>27 HOSPITAL ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>GEORGE TOWN</rptOwnerStreet2>
            <rptOwnerCity>GRAND CAYMAN</rptOwnerCity>
            <rptOwnerState>E9</rptOwnerState>
            <rptOwnerZipCode>KY1-9008</rptOwnerZipCode>
            <rptOwnerStateDescription>CAYMAN ISLANDS</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001805808</rptOwnerCik>
            <rptOwnerName>SOFTBANK VISION FUND (AIV M2) L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SB INVESTMENT ADVISERS (UK) LTD.</rptOwnerStreet1>
            <rptOwnerStreet2>69 GROSVENOR STREET</rptOwnerStreet2>
            <rptOwnerCity>LONDON</rptOwnerCity>
            <rptOwnerState>X0</rptOwnerState>
            <rptOwnerZipCode>W1K 3JP</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001731509</rptOwnerCik>
            <rptOwnerName>SB INVESTMENT ADVISERS (UK) LTD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>69 GROSVENOR STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LONDON</rptOwnerCity>
            <rptOwnerState>X0</rptOwnerState>
            <rptOwnerZipCode>W1K 3JP</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Series C Convertible Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>27904963</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each share of Series C Preferred Stock is convertible into shares of the Issuer's Common Stock on a 1-for-3.55092 basis into the number of shares of common stock shown in column 3 at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The Series C Preferred Stock has no expiration date.</footnote>
        <footnote id="F2">Represents securities held directly by SVF Pauling (Cayman) Limited, a wholly owned subsidiary of SoftBank Vision Fund (AIV M2) L.P. (&quot;SVF&quot;). SB Investment Advisers (UK) Limited (&quot;SBIA UK&quot;) has been appointed as alternative investment fund manager (&quot;AIFM&quot;) and is exclusively responsible for managing SVF in accordance with the Alternative Investment Fund Managers Directive and is authorized and regulated by the UK Financial Conduct Authority accordingly. As AIFM of SVF, SBIA UK is exclusively responsible for making all decisions relating to the acquisition, structuring, financing and disposal of SVF's investments. SBIA UK disclaims beneficial ownership of such shares except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission that any reporting person is the beneficial owner of such shares for purposes of the Securities Exchange Act of 1934 or for any other purpose.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Karen Ellerbe, Director of SVF Pauling (Cayman) Limited</signatureName>
        <signatureDate>2020-07-15</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/  Ruwan Weerasekera, Director of SB Investment Advisers (UK) Limited manager of SoftBank Vision Fund (AIV M2) L.P.</signatureName>
        <signatureDate>2020-07-15</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/  Ruwan Weerasekera, Director of SB Investment Advisers (UK) Limited</signatureName>
        <signatureDate>2020-07-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
