Exhibit 21.1

HOLLY ENERGY PARTNERS, L.P. ⁽¹⁾ 

SUBSIDIARIES OF REGISTRANT

State of

Incorporation or

Name of EntityOrganization

Cheyenne Logistics LLC    Delaware

Cheyenne Pipeline LLC (joint venture)    Delaware

El Dorado Logistics LLC    Delaware

El Dorado Operating LLC    Delaware    

El Dorado Osage LLC    Delaware

Frontier Aspen LLC (f/k/a HEP Casper SLC LLC)    Delaware

HEP Cheyenne LLC    Delaware

HEP Cheyenne Shortline LLC    Delaware

HEP El Dorado LLC    Delaware

HEP Fin-Tex/Trust-River, L.P.            Texas

HEP Logistics GP, L.L.C            Delaware

HEP Mountain Home, L.L.C.            Delaware

HEP Navajo Southern, L.P.            Delaware

HEP Pipeline Assets, Limited Partnership        Delaware

HEP Pipeline GP, L.L.C.            Delaware

HEP Pipeline, L.L.C.                Delaware

HEP Refining Assets, L.P.            Delaware

HEP Refining GP, L.L.C.            Delaware

HEP Refining, L.L.C.                Delaware

HEP Tulsa LLC                    Delaware

HEP UNEV Holdings LLC    Delaware

HEP UNEV Pipeline LLC    Delaware

HEP Woods Cross, L.L.C.            Delaware

Holly Energy Finance Corp.    Delaware

Holly Energy Holdings LLC    Delaware

Holly Energy Partners – Operating, L.P. ⁽¹⁾        Delaware

Holly Energy Storage – Lovington LLC    Delaware

Lovington-Artesia, L.L.C    Delaware

NWNAL LLC    Delaware

Osage Pipe Line Company LLC (joint venture)    Delaware

Roadrunner Pipeline, L.L.C.    Delaware

SLC Pipeline LLC (f/k/a HEP SLC, LLC)        Delaware

UNEV Pipeline, LLC (joint venture)    Delaware

Woods Cross Operating LLC    Delaware

(1) Holly Energy Partners, L.P. and Holly Energy Partners - Operating, L.P. also do business as

Holly Energy Partners.