<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a13727-d976-79b1-be4a-98f67a6d33da,g:36000ed9-7fde-41f3-bf53-da3deff437d1-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.up.com/role/Cover" xlink:type="simple" xlink:href="unp-20261016.xsd#Cover"/>
  <link:presentationLink xlink:role="http://www.up.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_01a1372d-2d50-79ac-bb9a-02ab8990ae12" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_DocumentType_01a1372d-2d50-79ac-bb9a-02ab8990ae12" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_01a1372e-8100-748e-b0a9-8e70d838bdf4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_DocumentPeriodEndDate_01a1372e-8100-748e-b0a9-8e70d838bdf4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_01a13731-7676-797c-97bb-5d15e39ff9ba" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_EntityFileNumber_01a13731-7676-797c-97bb-5d15e39ff9ba" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_01a1372f-8aa4-7d7d-8c5f-cd6697731b1b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_EntityRegistrantName_01a1372f-8aa4-7d7d-8c5f-cd6697731b1b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_01a13730-ee73-7b5f-ae47-90a4bfe8ad31" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_EntityIncorporationStateCountryCode_01a13730-ee73-7b5f-ae47-90a4bfe8ad31" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_01a13732-3488-7166-aab0-73e0170090a6" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_EntityTaxIdentificationNumber_01a13732-3488-7166-aab0-73e0170090a6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_01a13733-3fc7-7da6-bda8-47e34d7543c8" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_EntityAddressAddressLine1_01a13733-3fc7-7da6-bda8-47e34d7543c8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_01a13733-dbc7-79b7-8630-9f797653e9ce" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_EntityAddressCityOrTown_01a13733-dbc7-79b7-8630-9f797653e9ce" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_01a13734-3e9b-766f-ace4-87a3f2ab3996" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_EntityAddressStateOrProvince_01a13734-3e9b-766f-ace4-87a3f2ab3996" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_01a13734-e4e9-7a69-ad73-c06262982a0f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_EntityAddressPostalZipCode_01a13734-e4e9-7a69-ad73-c06262982a0f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_01a13735-a306-74e9-8696-ca3132fda53e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_CityAreaCode_01a13735-a306-74e9-8696-ca3132fda53e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_01a13736-5789-7847-babf-f789ea5c7dbf" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_LocalPhoneNumber_01a13736-5789-7847-babf-f789ea5c7dbf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_01a13739-26d3-72c1-87fe-853c2f1308d1" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_Security12bTitle_01a13739-26d3-72c1-87fe-853c2f1308d1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_01a13739-72e0-7145-8379-049b762ee7e8" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_TradingSymbol_01a13739-72e0-7145-8379-049b762ee7e8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_01a13739-c76a-7bba-8448-eb6ec35448d2" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_SecurityExchangeName_01a13739-c76a-7bba-8448-eb6ec35448d2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_01a13737-0129-7462-a6fe-c6fffd3fc144" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_WrittenCommunications_01a13737-0129-7462-a6fe-c6fffd3fc144" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_01a13737-6c05-7d74-9236-ba90492e0cc0" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_SolicitingMaterial_01a13737-6c05-7d74-9236-ba90492e0cc0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_01a13737-f1f7-7432-8405-ca39bb179f19" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_PreCommencementTenderOffer_01a13737-f1f7-7432-8405-ca39bb179f19" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_01a13738-816d-7270-b49d-4c1dd17f5b76" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_01a13738-816d-7270-b49d-4c1dd17f5b76" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_01a1373a-9deb-71f2-832d-19d8d42a427c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_EntityEmergingGrowthCompany_01a1373a-9deb-71f2-832d-19d8d42a427c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_01a13764-52f6-7180-9b57-12be51095c90" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_AmendmentFlag_01a13764-52f6-7180-9b57-12be51095c90" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_01a13764-048b-78eb-b7f2-2c4cab686886" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a1372d-2d50-753b-950d-9bafc3a012f8" xlink:to="loc_dei_EntityCentralIndexKey_01a13764-048b-78eb-b7f2-2c4cab686886" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
