Lookout Summit

{{short description|Mountain in Washington (state), United States}}

{{For|similar terms|Lookout Mountain (disambiguation)}}

{{Use mdy dates|date=January 2025}}

{{Infobox mountain

| name = Lookout Summit

| photo = File:Lookout Peak Summit.jpg

| photo_caption = The summit of Lookout Summit

| elevation_ft = 3629

| elevation_ref = {{cite peakbagger|pid=3092 | title = Rattlesnake Hills Lookout | access-date = May 3, 2018 }}{{cite web

| url = https://ngmdb.usgs.gov/img4/ht_icons/Browse/WA/WA_Maiden%20Spring_242132_1974_24000.jpg

| title = Maiden Spring Topographic Map

| publisher = United States Geological Survey

| access-date = May 3, 2018 }}

| prominence_ft = 1829

| prominence_ref =

| isolation_mi = 12.94

| isolation_ref =

| location = Benton County, Washington

| range = Rattlesnake Hills

| coordinates = {{coord|46.4476327|-119.8400381|format=dms|region:US_type:mountain||display=inline,title}}

| coordinates_ref = {{cite gnis|id=1514762|name=Lookout|access-date = May 3, 2018}}

| topo = USGS Maiden Spring

| type =

| age =

| first_ascent =

| easiest_route =

| listing ={{unbulleted list

|Washington isolated peaks 32nd

|{{resize|Washington most prominent peaks 181st}}

|{{resize|Washington county high points 29th}}

}}

}}

Lookout Summit—officially listed as "Lookout" in the Geographic Names Information System—is the highest point in Benton County,{{cite peakbagger|lid=13202 | title = Washington County High Points | access-date = May 3, 2018 }} in the U.S. state of Washington. The mountain is also the highest point in the Rattlesnake Hills,{{cite peakbagger|rid=132016| title = Rattlesnake Hills| access-date = May 3, 2018 }} with an elevation {{cvt|98|ft}} higher than the neighboring, more-well-known Rattlesnake Mountain—which is the second highest peak in the range (as well as the county).

{{wide image|Lookout Peak_Cropped.jpg|2000px|Panorama of Lookout Summit taken from Washington State Route 24.}}