# National Route 20 (South Korea)

National Route 20 is a national highway in South Korea connects Sancheong to Pohang. It was established on 14 March 1981.

## Main stopovers

South Gyeongsang Province
* Sancheong County - Uiryeong County - Hapcheon County - Changnyeong County
North Gyeongsang Province
* Cheongdo County - Gyeongju - Pohang

## Major intersections

* (■): Motorway
IS: Intersection, IC: Interchange

### South Gyeongsang Province

| Name | Hangul name | Connection | Location | Location | Note |
| Jungsan-ri | 중산리 | | Sancheong County | Sicheon-myeon | Terminus |
| Jungsan Bridge | 중산교 | | Sancheong County | Sicheon-myeon | |
| (Samdang Bridge) | (삼당교 동단) | Prefectural Route 1047 (Samsinbong-ro) | Sancheong County | Sicheon-myeon | Prefectural Route 1047 overlap |
| Sincheon Elementary School | 신천초등학교 | | Sancheong County | Sicheon-myeon | Prefectural Route 1047 overlap |
| (Oegongma-eul) | (외공마을) | National Route 59 | Sancheong County | Sicheon-myeon | Prefectural Route 1047 overlap National Route 59 overlap |
| Wonri IS | 원리 교차로 | National Route 59 (Jirisan-daero) | Sancheong County | Sicheon-myeon | National Route 59 overlap |
| No name | (이름 없음) | Chinhwangyeong-ro | Sancheong County | Sicheon-myeon | |
| Sari IS | 사리 교차로 | Nammyeong-ro | Sancheong County | Sicheon-myeon | |
| Changchon IS | 창촌삼거리 | Prefectural Route 1005 (Okdan-ro) | Sancheong County | Danseong-myeon | |
| (Hoam Bridge) | (호암교 남단) | Prefectural Route 1001 (Hoam-ro) | Sancheong County | Danseong-myeon | Prefectural Route 1001 overlap |
| Namsa IS | 남사삼거리 | Prefectural Route 1001 (Mokhwa-ro) | Sancheong County | Danseong-myeon | Prefectural Route 1001 overlap |
| No name | (이름 없음) | Prefectural Route 1049 (Mokhwa-ro) | Sancheong County | Danseong-myeon | |
| Baeyang Bridge | 배양교 | Prefectural Route 1049 (Mokhwa-ro) (Seongcheol-ro) | Sancheong County | Danseong-myeon | |
| Danseong IC | 단성 나들목 | Tongyeong–Daejeon Expressway Mokhwa-ro | Sancheong County | Danseong-myeon | |
| Danseong High School IS | 단성중고교앞사거리 | Gangnubangmok-ro Jirisan-daero 3362beon-gil | Sancheong County | Danseong-myeon | |
| Danseong Bridge | 단성교 | | Sancheong County | Danseong-myeon | |
| Danseong Bridge | | | Sancheong County | Sinan-myeon | |
| Wonji IS | 원지삼거리 | Jungchongalcheon-ro | Sancheong County | Sinan-myeon | |
| No name | (이름 없음) | Wonji-ro | Sancheong County | Sinan-myeon | |
| Hajeong IS | 하정 교차로 | National Route 3 (Sancheong-daero) | Sancheong County | Sinan-myeon | |
| (Cheonghyeon Bridge) | (청현교 북단) | Prefectural Route 1006 (Cheonghyeon-ro) | Sancheong County | Sinan-myeon | Prefectural Route 1006 overlap |
| Mundae Clinic | 문대보건진료소 | | Sancheong County | Sinan-myeon | Prefectural Route 1006 overlap |
| Mundae IS | 문대삼거리 | Prefectural Route 1006 (Sincha-ro) | Sancheong County | Sinan-myeon | Prefectural Route 1006 overlap |
| Sinan Bridge | 신안교 | | Sancheong County | Sinan-myeon | |
| Dori IS | 도리 교차로 | Biryang-ro | Sancheong County | Saengbiryang-myeon | |
| Saengbiryang IS | 생비량삼거리 | Jinsan-ro | Sancheong County | Saengbiryang-myeon | |
| Saengbiryang IS | 생비량 교차로 | National Route 33 (Daesin-ro) | Sancheong County | Saengbiryang-myeon | National Route 33 overlap |
| Songgye Bridge | 송계교 | | Sancheong County | Saengbiryang-myeon | National Route 33 overlap |
| Daeui IS | 대의 교차로 | National Route 33 (Hapcheon-daero) | Uiryeong County | Daeui-myeon | National Route 33 overlap |
| Massang IS | 마쌍 교차로 | Daeui-ro | Uiryeong County | Daeui-myeon | |
| No nane | (이름 없음) | Daeui-ro | Uiryeong County | Daeui-myeon | |
| Pyeongchon IS | 평촌 교차로 | Missang 2-gil | Uiryeong County | Daeui-myeon | |
| Jukjeon IS | 죽전 교차로 | Hanti-ro | Uiryeong County | Daeui-myeon | |
| Dasa IS | 다사 교차로 | Hanti-ro | Uiryeong County | Daeui-myeon | |
| Dasa Tunnel | 다사터널 | | Uiryeong County | Daeui-myeon | Approximately 660m |
| Dasa Tunnel | | | Uiryeong County | Chilgok-myeon | Approximately 660m |
| Yangchon IS | 양촌 교차로 | Hanti-ro | Uiryeong County | Chilgok-myeon | |
| Sannam IS | 산남 교차로 | Hanti-ro | Uiryeong County | Chilgok-myeon | |
| Chilgok IS | 칠곡 교차로 | Chilgok-ro | Uiryeong County | Chilgok-myeon | |
| Ibam IS | 입암 교차로 | Prefectural Route 1013 (Chilgok-ro) (Jinui-ro) | Uiryeong County | Chilgok-myeon | |
| Bongdu IS | 봉두 교차로 | Hongui-ro | Uiryeong County | Garye-myeon | |
| Unam Overpass | 운암육교 | | Uiryeong County | Garye-myeon | |
| Garye Overpass | 가례육교 | Hongui-ro | Uiryeong County | Garye-myeon | |
| Garye IS | 가례 교차로 | Uibyeong-ro | Uiryeong County | Garye-myeon | |
| Namcheon IS | 남천삼거리 | Prefectural Route 1037 (Byeokhwa-ro) | Uiryeong County | Uiryeong-eup | Prefectural Route 1037 overlap |
| Seobu IS | 서부삼거리 | Prefectural Route 1037 (Uibyeong-ro 8-gil) | Uiryeong County | Uiryeong-eup | Prefectural Route 1037 overlap |
| Uibyeong IS | 의병사거리 | Chungik-ro | Uiryeong County | Uiryeong-eup | |
| Guryong IS | 구룡사거리 | Guryong-ro Namsan-ro | Uiryeong County | Uiryeong-eup | |
| Baekya IS | 백야오거리 | National Route 79 (Uiryeong-daero) Namgang-ro Baeksan-ro | Uiryeong County | Uiryeong-eup | |
| Mujeon IS | 무전삼거리 | Baeksan-ro | Uiryeong County | Uiryeong-eup | |
| Gyoam IS | 교암사거리 | Deokam-ro Sosang-ro | Uiryeong County | Yongdeok-myeon | |
| No name | (이름 없음) | Yongam-ro | Uiryeong County | Yongdeok-myeon | |
| Jindeungjae | 진등재 | | Uiryeong County | Yongdeok-myeon | |
| Jindeungjae | | | Uiryeong County | Jeonggok-myeon | |
| Jukjeon-ri | 죽전리 | Prefectural Route 1029 | Uiryeong County | Jeonggok-myeon | Under construction |
| Jeonggok IS | 정곡삼거리 | Beopjeong-ro | Uiryeong County | Jeonggok-myeon | |
| Junggyo IS | 중교사거리 | Prefectural Route 1011 (Beopjeong-ro) | Uiryeong County | Jeonggok-myeon | |
| Jeonggok Middle School | 정곡중학교 | | Uiryeong County | Jeonggok-myeon | |
| Yasan IS | 야산삼거리 | Prefectural Route 1041 (Cheongjeong-ro) | Uiryeong County | Yugok-myeon | Prefectural Route 1041 overlap |
| Segan IS | 세간삼거리 | Prefectural Route 1041 (Hamui-ro) | Uiryeong County | Yugok-myeon | Prefectural Route 1041 overlap |
| Segan Bridge IS | 세간교삼거리 | Prefectural Route 60 Prefectural Route 1008 (Bakjin-ro) | Uiryeong County | Yugok-myeon | Prefectural Route 60 overlap |
| No name | (이름 없음) | Danwon-ro Sinbeon-ro | Uiryeong County | Burim-myeon | Prefectural Route 60 overlap |
| Burim Bridge | 부림교 | Daehan-ro | Uiryeong County | Burim-myeon | |
| Uiryeong IC | 의령 나들목 | Hamyang-Ulsan Expressway | Uiryeong County | Burim-myeon | Under construction |
| Yeobae Bridge | 여배교 | | Uiryeong County | Burim-myeon | |
| Wonjin Bridge | 원진교 | | Hapcheon County | Cheongdeok-myeon | |
| Jeokpo IS | 적포삼거리 | National Route 24 (Dongbu-ro) | Hapcheon County | Cheongdeok-myeon | National Route 24 overlap |
| Seokpo Bridge | 적포교 | | Hapcheon County | Cheongdeok-myeon | National Route 24 overlap |
| Seokpo Bridge | | | Changnyeong County | Ibang-myeon | National Route 24 overlap |
| Inam IS | 이남삼거리 | Prefectural Route 67 Prefectural Route 79 (Ibang-ro) | Changnyeong County | Ibang-myeon | National Route 24 overlap Prefectural Route 67, 79 overlap |
| Yueo Bridge | 유어교 | | Changnyeong County | Ibang-myeon | National Route 24 overlap Prefectural Route 67, 79 overlap |
| Yueo Bridge | | | Changnyeong County | Yueo-myeon | National Route 24 overlap Prefectural Route 67, 79 overlap |
| Yueo-myeon Office | 유어면사무소 | | Changnyeong County | Yueo-myeon | National Route 24 overlap Prefectural Route 67, 79 overlap |
| Yueo IS | 유어삼거리 | National Route 79 Prefectural Route 67 (Yeongsanjangma-ro) | Changnyeong County | Yueo-myeon | National Route 24 overlap Prefectural Route 67, 79 overlap |
| No name | (이름 없음) | Uponeup-gil | Changnyeong County | Yueo-myeon | National Route 24 overlap |
| Boncho IS | 본초삼거리 | Gwandong-gil | Changnyeong County | Daeji-myeon | National Route 24 overlap |
| Changnyeong IC (Changnyeong IC IS) | 창녕 나들목 (창녕IC사거리) | Jungbu Expressway Upoyueonong-ro | Changnyeong County | Changnyeong-eup | National Route 24 overlap |
| Orijeong IS | 오리정사거리 | Prefectural Route 1080 (Upo 2-ro) | Changnyeong County | Changnyeong-eup | National Route 24 overlap |
| Myeongdeok Elementary School Changnyeong Seokbinggo | 명덕초등학교 창녕 석빙고 | | Changnyeong County | Changnyeong-eup | National Route 24 overlap |
| Songhyeon IS | 송현사거리 | Cheokgyeongbi-ro Hwawangsan-ro | Changnyeong County | Changnyeong-eup | National Route 24 overlap |
| Changnyeong Gyo-dong and Songhyeon-dong Tombstone | 창녕 교동과 송현동 고분군 | | Changnyeong County | Changnyeong-eup | National Route 24 overlap |
| Changnyeong Technical High School | 창녕공업고등학교 | | Changnyeong County | Goam-myeon | National Route 24 overlap |
| Goam IS | 고암사거리 | Eonmanmisan-ro Jungdae-gil | Changnyeong County | Goam-myeon | National Route 24 overlap |
| Goam IS | 고암사거리 | National Route 24 (Changmil-ro) | Changnyeong County | Goam-myeon | National Route 24 overlap |
| Goam-myeon Office Jungdae Bridge | 고암면사무소 중대교 | | Changnyeong County | Goam-myeon | |
| Banggoljae | 방골재 | | Changnyeong County | Goam-myeon | |
| Banggoljae | | | Changnyeong County | Seongsan-myeon | |
| Bangri IS | 방리사거리 | Prefectural Route 1034 (Seongsan-ro) | Changnyeong County | Seongsan-myeon | |
| Beotijae IS | 버티재삼거리 | | Changnyeong County | Seongsan-myeon | |
| Beotijae | 버티재 | | Changnyeong County | Seongsan-myeon | Continuation into North Gyeongsang Province |

### North Gyeongsang Province

| Name | Hangul name | Connection | Location | Location | Note |
| Beotijae | 버티재 | | Cheongdo County | Punggak-myeon | South Gyeongsang Province - North Gyeongsang Province border line |
| Geumgok IS | 금곡삼거리 | Geumdong-gil | Cheongdo County | Punggak-myeon | |
| Punggak Overpass | 풍각육교 | Bonggi-ro Wolbong-gil | Cheongdo County | Punggak-myeon | |
| Songseo 1 Bridge | 송서1교 | | Cheongdo County | Punggak-myeon | |
| Songseo 2 Bridge | 송서2교 | | Cheongdo County | Punggak-myeon | |
| Songseo 2 Bridge | | | Cheongdo County | Gaknam-myeon | |
| Sindang IS | 신당 교차로 | Prefectural Route 30 Prefectural Route 902 (Gaknam-ro) (Hanjae-ro) (Heolti-ro) | Cheongdo County | Gaknam-myeon | |
| Yeri IS | 예리 교차로 | Yeri 4-gil | Cheongdo County | Gaknam-myeon | |
| Gaknam IS | 각남 교차로 | Prefectural Route 30 (Iseo-ro) | Cheongdo County | Gaknam-myeon | |
| Seosang IS | 서상 교차로 | Dojugwan-ro Yeonji-ro | Cheongdo County | Hwayang-eup | |
| Hapcheon IS | 합천삼거리 | Hwayang-ro | Cheongdo County | Hwayang-eup | |
| Hwayang IS | 화양삼거리 | Hwayang-ro | Cheongdo County | Hwayang-eup | |
| Nulmi IS | 눌미사거리 | Donggo-gil Dongcheon 3-gil | Cheongdo County | Hwayang-eup | |
| Stadium IS (Cheongdo Public Stadium) | 운동장앞사거리 (청도공설운동장) | | Cheongdo County | Hwayang-eup | |
| Beomgok IS | 범곡사거리 | Cheonghwa-ro Beomgok-gil | Cheongdo County | Hwayang-eup | |
| Cheongdo Bridge | 청도대교 | | Cheongdo County | Hwayang-eup | |
| Cheongdo Bridge | | | Cheongdo County | Cheongdo-eup | |
| Mogang IS | 모강 교차로 | National Route 25 (Saemaeul-ro) | Cheongdo County | Cheongdo-eup | |
| Wondang IS | 원당삼거리 | Jungang-ro | Cheongdo County | Cheongdo-eup | |
| Buya IS | 부야 교차로 | Palchi-gil | Cheongdo County | Cheongdo-eup | |
| Gomtijae Tunnel | 곰티재터널 | | Cheongdo County | Cheongdo-eup | Approximately 1,030m |
| Gomtijae Tunnel | | | Cheongdo County | Maejeon-myeon | Approximately 1,030m |
| Gomtae IS | 곰태 교차로 | Gomti-ro | Cheongdo County | Maejeon-myeon | |
| Gwanha-ri | 관하리 | Prefectural Route 925 (Gwanbang-ro) | Cheongdo County | Maejeon-myeon | |
| Maejeon Health Center Maejeon-myeon Office | 매전보건지소 매전면사무소 | | Cheongdo County | Maejeon-myeon | |
| Maejeon IS | 매전삼거리 | National Route 58 (Cheongmae-ro) | Cheongdo County | Maejeon-myeon | |
| Maejeon Bridge IS | 매전교삼거리 | Prefectural Route 919 (Seonam-ro) | Cheongdo County | Maejeon-myeon | |
| Donggokjae | 동곡재 | | Cheongdo County | Maejeon-myeon | |
| Donggokjae | | | Cheongdo County | Geumcheon-myeon | |
| Donggok IS | 동곡네거리 | Prefectural Route 69 (Geumcheon-ro) | Cheongdo County | Geumcheon-myeon | Prefectural Route 69 overlap |
| Geumcheon-myeon Office | 금천면사무소 | | Cheongdo County | Geumcheon-myeon | Prefectural Route 69 overlap |
| Geumcheon IS | 금천네거리 | Prefectural Route 919 (Seonam-ro) | Cheongdo County | Geumcheon-myeon | Prefectural Route 69 overlap |
| Donggok IS | 동곡삼거리 | Prefectural Route 919 (Geumcheon-ro) | Cheongdo County | Geumcheon-myeon | Prefectural Route 69, 919 overlap |
| Bangji Elementary School | 방지초등학교 | | Cheongdo County | Geumcheon-myeon | Prefectural Route 69, 919 overlap |
| Daecheon Public Bus Terminal | 대천공용여객자동차터미널 | | Cheongdo County | Unmun-myeon | Prefectural Route 69, 919 overlap |
| Daecheon IS | 대천삼거리 | Prefectural Route 69 (Unmun-ri) | Cheongdo County | Unmun-myeon | Prefectural Route 69, 919 overlap |
| Unmundaem | 운문댐 | | Cheongdo County | Unmun-myeon | Prefectural Route 919 overlap |
| Unmundaem IS | 운문댐삼거리 | Prefectural Route 919 (Unyong-ro) | Cheongdo County | Unmun-myeon | Prefectural Route 919 overlap |
| Jichon IS | 지촌삼거리 | Prefectural Route 921 (Unbuk-ro) | Cheongdo County | Unmun-myeon | Prefectural Route 921 overlap |
| Jichon 2 Bridge | 지촌2교 | | Cheongdo County | Unmun-myeon | Prefectural Route 921 overlap |
| Sinwon 1 Bridge Sinwon 2 Bridge | 신원1교 신원2교 | | Cheongdo County | Unmun-myeon | Prefectural Route 921 overlap |
| Sinwon 1 Bridge Sinwon 2 Bridge | | | Gyeongju City | Sannae-myeon | Prefectural Route 921 overlap |
| Sannae IS | 산내네거리 | Prefectural Route 921 (Munbok-ro) | Gyeongju City | Sannae-myeon | Prefectural Route 921 overlap |
| Uigok Bridge | 의곡교 | | Gyeongju City | Sannae-myeon | |
| Danggogae | 당고개 | | Gyeongju City | Sannae-myeon | |
| Danggogae | | | Gyeongju City | Geoncheon-eup | |
| Geocheon IC | 건천 나들목 | Gyeongbu Expressway | Gyeongju City | Geoncheon-eup | |
| (Cheonpo-ri) | (천포리) | Danseok-ro | Gyeongju City | Geoncheon-eup | |
| Yongmyeong Overpass | 용명육교 | | Gyeongju City | Geoncheon-eup | |
| North Geoncheon IC | 북건천 나들목 | National Route 4 National Route 35 (Daegyeong-ro) | Gyeongju City | Geoncheon-eup | |
| Geoncheo Tunnel | 건천터널 | | Gyeongju City | Geoncheon-eup | Right tunnel: Approximately 615m Left tunnel: Approximately 627m |
| Daegok IS | 대곡 교차로 | Daegogyongmyeong-gil | Gyeongju City | Geoncheon-eup | |
| Gyeongju Tunnel | 경주터널 | | Gyeongju City | Geoncheon-eup | Right tunnel: Approximately 2,080m Left tunnel: Approximately 2,060m |
| Gyeongju Tunnel | | | Gyeongju City | Hyeongok-myeon | Right tunnel: Approximately 2,080m Left tunnel: Approximately 2,060m |
| Hyeongok IS | 현곡 교차로 | Prefectural Route 904 (Yongdam-ro) | Gyeongju City | Hyeongok-myeon | |
| Malgubul Tunnel | 말구불터널 | | Gyeongju City | Hyeongok-myeon | Right tunnel: Approximately 465m Left tunnel: Approximately 440m |
| Malgubul Tunnel | | | Gyeongju City | Angang-eup | Right tunnel: Approximately 465m Left tunnel: Approximately 440m |
| Sabang IS | 사방 교차로 | Anhyeon-ro | Gyeongju City | Angang-eup | |
| Sabang Bridge | 사방대교 | | Gyeongju City | Angang-eup | |
| Hyeongsangang Bridge | 형산강교 | | Gyeongju City | Angang-eup | |
| Hyeongsangang Bridge | | | Gyeongju City | Cheonbuk-myeon | |
| North Gyeongju IC | 북경주 나들목 | National Route 7 (Saneop-ro) | Gyeongju City | Cheonbuk-myeon | |
| No name | (이름 없음) | Hwasangongdan-gil | Gyeongju City | Cheonbuk-myeon | |
| Sinwangsin Bridge | 신왕신교 | | Gyeongju City | Cheonbuk-myeon | |
| Gangdong Tunnel | 강동터널 | | Gyeongju City | Cheonbuk-myeon | Right tunnel: Approximately 1,215m Left tunnel: Approximately 1,235m |
| Gangdong Tunnel | | | Gyeongju City | Gangdong-myeon | Right tunnel: Approximately 1,215m Left tunnel: Approximately 1,235m |
| Gangdong Bridge | 강동교 | | Gyeongju City | Gangdong-myeon | |
| Wangsin IC | 왕신 나들목 | Prefectural Route 945 (Cheongang-ro) | Gyeongju City | Gangdong-myeon | |
| Gangdongsandan Bridge | 강동산단교 | Gangdongsandan-ro | Gyeongju City | Gangdong-myeon | |
| Ubok IS | 우복 교차로 | National Route 31 (Yeongilman-daero) | Pohang City | Nam District Yeonil-eup | |
| Namseong IS | 남성 교차로 | Honggye-gil 62beon-gil Namseong-gil Namseong-gil 1-gil | Pohang City | Nam District Daesong-myeon | |
| Namcheon Bridge | 남천교 | Unje-ro | Pohang City | Nam District Daesong-myeon | |
| (Dongkuk Steel) | (동국제강앞) | Jangheung-ro | Pohang City | Nam District | |
| (Pohang Electrical substation) | (포항변전소) | Goedong-ro Cheolgang-ro | Pohang City | Nam District | |
| Jangheung-dong IS | 장흥동사거리 | Prefectural Route 20 (Cheolkang-ro) | Pohang City | Nam District | |
| Dongkuk Structures & Construction | 동국에스앤씨 | | Pohang City | Nam District | |
| Hyundai Special Steel Pohang Factory | 현대종합특수강 포항공장 | Seoman-ro | Pohang City | Nam District | |
| POSCO Engineering & Construction Jenae Bridge Goedong Station | 포스코건설 제내교 괴동역 | | Pohang City | Nam District | |
| Hyundai Steel IS | 현대제철삼거리 | Donghaean-ro | Pohang City | Nam District | Terminus |