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Sierra Brondstetter

Mercer Island · Class of 2029

41 resultsCross Country2021–2026
WrappedYour 2026 Cross Country season, WrappedRaces, wins, PRs and rankings as cards for your Instagram StoryShare it →

Personal bests

Best marks in available results
Event / courseMarkMeetDate
1 Mile · Lincoln ParkWest Seattle Rust Buster · Sep 306:20.3West Seattle Rust BusterSeptember 30, 2023
2 Miles · Lake Sammamish State Park2026 Kingco Class Races - 2 mile · Sep 1012:17.12026 Kingco Class Races - 2 mileSeptember 10, 2026
2.1 Miles · Lake Sammamish State ParkKingco Class Races - 2.1 Mile run · Sep 413:21.8Kingco Class Races - 2.1 Mile runSeptember 4, 2025
2974 m · Genesse Park Trails (lower field)2022 Rainier Beach Goose Chase · Oct 2313:17.302022 Rainier Beach Goose ChaseOctober 23, 2022
3,000 Meters · Chambers Creek Properties Central MeadowUSATF Region 13 Junior Olympic Championships · Nov 2013:32.70USATF Region 13 Junior Olympic ChampionshipsNovember 20, 2021
3,000 Meters · EP Tom Sawyer State ParkUSATF National Junior Olympic Championships · Dec 912:24.63USATF National Junior Olympic ChampionshipsDecember 9, 2023
3,000 Meters · Farragut State ParkUSATF Region 13 Junior Olympic Championships · Nov 1811:40.10USATF Region 13 Junior Olympic ChampionshipsNovember 18, 2023
3,000 Meters · Five Mile Lake ParkFWTC Autumn Classic · Oct 712:50.60FWTC Autumn ClassicOctober 7, 2023
3,000 Meters · Robinswood ParkCascade Striders 2023 Flying Feet Cross Country Invitational · Oct 1412:37Cascade Striders 2023 Flying Feet Cross Country InvitationalOctober 14, 2023
3,000 Meters · Warren G. Magnuson ParkUSATF Pacific Northwest Association Junior Olympic Championships · Nov 1111:59.60USATF Pacific Northwest Association Junior Olympic ChampionshipsNovember 11, 2023
3,000 Meters · Wilburton Hill ParkCascade Striders Flying Feet Invitational · Oct 915:53Cascade Striders Flying Feet InvitationalOctober 9, 2021
3,000 Meters · Woodland ParkRain City Flyers 2022 Stampede · Oct 2913:40.84Rain City Flyers 2022 StampedeOctober 29, 2022
4,000 Meters · Blue River Cross Country CourseUSATF National Junior Olympic Championships · Dec 1415:25.02USATF National Junior Olympic ChampionshipsDecember 14, 2024
4,000 Meters · Chambers Creek Properties Central MeadowUSATF Region 13 Junior Olympic Championships · Nov 2317:02.70USATF Region 13 Junior Olympic ChampionshipsNovember 23, 2024
4,000 Meters · Warren G. Magnuson ParkUSATF Pacific Northwest Association Junior Olympic Championships · Nov 1616:06.60USATF Pacific Northwest Association Junior Olympic ChampionshipsNovember 16, 2024
5,000 Meters · Lake Sammamish State Park3A and 2A Seaking District Championship Cross Country Meet · Oct 3119:25.523A and 2A Seaking District Championship Cross Country Meet October 31, 2025
5,000 Meters · Lakewood High SchoolNIKE -- HOLE IN THE WALL XC INVITATIONAL · Oct 1019:35.3NIKE -- HOLE IN THE WALL XC INVITATIONALOctober 10, 2026
5,000 Meters · Lower Woodland2A 3A District 2 Sea-King · Oct 2919:35.612A 3A District 2 Sea-KingOctober 29, 2026
5,000 Meters · Luther Burbank ParkKingCo League XC - Eastlake / Issaquah @ Mercer Island (Senior Night) · Sep 1721:40.8KingCo League XC - Eastlake / Issaquah @ Mercer Island (Senior Night)September 17, 2026
5,000 Meters · South Fork Landing KingCo Crest Meet · Oct 1419:04.25KingCo Crest MeetOctober 14, 2026
5,000 Meters · Sun Willows Golf Course2025 WIAA State XC Championships · Nov 820:45.12025 WIAA State XC ChampionshipsNovember 8, 2025
5,000 Meters · The Course Spokane Valley 5kNike Bob Firman Invitational XC · Sep 2519:49.60Nike Bob Firman Invitational XCSeptember 25, 2026

Best marks from the meets included here. Cross Country bests are grouped by course and distance.

2026 Cross Country

8 results
DateMeetEventPlMarkGr
Oct 292A 3A District 2 Sea-KingOct 29 · 5,000 Meters 3A Varsity · Place 16 · Mercer IslandMercer Island5,000 Meters 3A Varsity1619:35.61 PB10
Oct 241A/2A, 3A, 4A Kingco Conference Championship Cross Country Meet Oct 24 · 5,000 Meters 3A Girls Varsity · Place 9 · Mercer IslandMercer Island5,000 Meters 3A Girls Varsity919:41.8910
Oct 14KingCo Crest MeetOct 14 · 5,000 Meters Varsity · Place 12 · Mercer IslandMercer Island5,000 Meters Varsity1219:04.25 PB10
Oct 10NIKE -- HOLE IN THE WALL XC INVITATIONALOct 10 · 5,000 Meters Womens Elite avg under 19:40 · Place 90 · Mercer IslandMercer Island5,000 Meters Womens Elite avg under 19:409019:35.3 PB10
Sep 25Nike Bob Firman Invitational XCSep 25 · 5,000 Meters Elite · Place 133 · Mercer IslandMercer Island5,000 Meters Elite13319:49.60 PB10
Sep 17KingCo League XC - Eastlake / Issaquah @ Mercer Island (Senior Night)Sep 17 · 5,000 Meters Girls · Place 10 · Mercer IslandMercer Island5,000 Meters Girls1021:40.8 PB10
Sep 102026 Kingco Class Races - 2 mileSep 10 · 2 Miles 10th Grade Girls · Place 3 · Mercer IslandMercer Island2 Miles 10th Grade Girls312:17.1 PB10
Aug 25MIXC Time TrialAug 25 · 2,820 Meters open · Place 1 · Mercer IslandMercer Island2,820 Meters open110:43.9Unofficial10

2025 Cross Country

11 results
DateMeetEventPlMarkGr
Nov 82025 WIAA State XC ChampionshipsNov 8 · 5,000 Meters 3A Girls · Place 98 · Mercer IslandMercer Island5,000 Meters 3A Girls9820:45.1 PB9
Oct 313A and 2A Seaking District Championship Cross Country Meet Oct 31 · 5,000 Meters 3A Girls · Place 18 · Mercer IslandMercer Island5,000 Meters 3A Girls1819:25.52 PB9
Oct 254A/3A/2A & 1A Kingco Conference Cross Country ChampionshipsOct 25 · 5,000 Meters 3A Girls Varsity · Place 8 · Mercer IslandMercer Island5,000 Meters 3A Girls Varsity819:50.699
Oct 8KingCo League XC - MI / Redmond / Inglemoor / Liberty (Sr. Night) @ Luther BurbankOct 8 · 5,000 Meters Varsity · Place 11 · Mercer IslandMercer Island5,000 Meters Varsity1120:47.49
Oct 4HOKA 29th John Payne XC InviteOct 4 · 5,000 Meters Varsity · Place 120 · Mercer IslandMercer Island5,000 Meters Varsity12020:50.29
Sep 24Cedarcrest, Skyline, Mercer Island @ EastlakeSep 24 · 5,000 Meters Junior Varsity · Place 11 · Mercer IslandMercer Island5,000 Meters Junior Varsity1122:20.759
Sep 16Mercer Island, Issaquah, Lindbergh @ Mount SiSep 16 · 5,000 Meters Junior Varsity · Place 10 · Mercer IslandMercer Island5,000 Meters Junior Varsity1022:16.809
Sep 13The 26th Bellarmine InviteSep 13 · 2 Miles Varsity · Place 13 · Mercer IslandMercer Island2 Miles Varsity1312:41.99
Sep 10KingCo League XC - MI / Woodinville / Cedarcrest @ Luther BurbankSep 10 · 5,000 Meters Open · Place 8 · Mercer IslandMercer Island5,000 Meters Open820:47.59
Sep 4Kingco Class Races - 2.1 Mile runSep 4 · 2.1 Miles 9th Grade Girls · Place 6 · Mercer IslandMercer Island2.1 Miles 9th Grade Girls613:21.8 PB9
Aug 26MIXC Time TrialAug 26 · 2,820 Meters open · Place 4 · Mercer IslandMercer Island2,820 Meters open411:33.3Unofficial9

2024 Cross Country

6 results
DateMeetEventPlMarkGr
Dec 14USATF National Junior Olympic ChampionshipsDec 14 · 4,000 Meters 13-14 · Place 106 · West Seattle Road RunnersWest Seattle Road Runners4,000 Meters 13-1410615:25.02 PB8
Nov 23USATF Region 13 Junior Olympic ChampionshipsNov 23 · 4,000 Meters 13-14 · Place 45 · West Seattle Road RunnersWest Seattle Road Runners4,000 Meters 13-144517:02.70 PB8
Nov 16USATF Pacific Northwest Association Junior Olympic ChampionshipsNov 16 · 4,000 Meters 13-14 · Place 14 · West Seattle Road RunnersWest Seattle Road Runners4,000 Meters 13-141416:06.60 PB8
Nov 3Stumptown Youth XC ChampionshipNov 3 · 3,000 Meters Varsity · Place 20 · West Seattle Road RunnersWest Seattle Road Runners3,000 Meters Varsity2011:21.118
Oct 13Cascade Striders 2024 Flying Feet Cross Country InvitationalOct 13 · 4,000 Meters Varsity · Place 15 · West Seattle Road RunnersWest Seattle Road Runners4,000 Meters Varsity1516:28.2013
Sep 29West Seattle Rust BusterSep 29 · 3,000 Meters Varsity · Place 8 · West Seattle Road RunnersWest Seattle Road Runners3,000 Meters Varsity812:00.68

2023 Cross Country

7 results
DateMeetEventPlMarkGr
Dec 9USATF National Junior Olympic ChampionshipsDec 9 · 3,000 Meters 11-12 · Place 163 · West Seattle Road RunnersWest Seattle Road Runners3,000 Meters 11-1216312:24.63 PB7
Nov 18USATF Region 13 Junior Olympic ChampionshipsNov 18 · 3,000 Meters 11-12 · Place 13 · West Seattle Road RunnersWest Seattle Road Runners3,000 Meters 11-121311:40.10 PB7
Nov 11USATF Pacific Northwest Association Junior Olympic ChampionshipsNov 11 · 3,000 Meters 11-12 · Place 6 · West Seattle Road RunnersWest Seattle Road Runners3,000 Meters 11-12611:59.60 PB7
Oct 282023 Rain City StampedeOct 28 · 3,000 Meters 11-12 · Place 8 · West Seattle Road RunnersWest Seattle Road Runners3,000 Meters 11-12812:47.45Unofficial7
Oct 14Cascade Striders 2023 Flying Feet Cross Country InvitationalOct 14 · 3,000 Meters 11-12 · Place 6 · West Seattle Road RunnersWest Seattle Road Runners3,000 Meters 11-12612:37 PB7
Oct 7FWTC Autumn ClassicOct 7 · 3,000 Meters 11-12 · Place 6 · West Seattle Road RunnersWest Seattle Road Runners3,000 Meters 11-12612:50.60 PB7
Sep 30West Seattle Rust BusterSep 30 · 1 Miles 11-12 · Place 5 · West Seattle Road RunnersWest Seattle Road Runners1 Miles 11-1256:20.3 PB7

2022 Cross Country

6 results
DateMeetEventPlMarkGr
Nov 19USATF Region 13 Junior Olympic ChampionshipsNov 19 · 3,000 Meters 11-12 · Place 59 · Mercer Island BluebirdsMercer Island Bluebirds3,000 Meters 11-125913:36.806
Nov 12USATF Pacific Northwest Association Junior Olympic ChampionshipsNov 12 · 3,000 Meters Varsity · Place 17 · Mercer Island BluebirdsMercer Island Bluebirds3,000 Meters Varsity1712:34.9012
Oct 29Rain City Flyers 2022 StampedeOct 29 · 3,000 Meters 11-12 · Place 16 · Mercer Island BluebirdsMercer Island Bluebirds3,000 Meters 11-121613:40.84 PB6
Oct 232022 Rainier Beach Goose ChaseOct 23 · 2,974 Meters 11-12 · Place 10 · Mercer Island BluebirdsMercer Island Bluebirds2,974 Meters 11-121013:17.30 PB6
Oct 8FWTC Autumn ClassicOct 8 · 3,000 Meters 11-12 · Place 11 · Mercer Island BluebirdsMercer Island Bluebirds3,000 Meters 11-121113:25.506
Oct 1West Seattle Rust BusterOct 1 · 1 Miles 11-12 · Place 7 · Mercer Island BluebirdsMercer Island Bluebirds1 Miles 11-1276:45.56

2021 Cross Country

3 results
DateMeetEventPlMarkGr
Nov 20USATF Region 13 Junior Olympic ChampionshipsNov 20 · 3,000 Meters 9-10 · Place 37 · Mercer Island BluebirdsMercer Island Bluebirds3,000 Meters 9-103713:32.70 PB5
Nov 14USATF Pacific Northwest Association Junior Olympic ChampionshipsNov 14 · 3,000 Meters 9-10 · Place 24 · Mercer Island BluebirdsMercer Island Bluebirds3,000 Meters 9-102414:28.205
Oct 9Cascade Striders Flying Feet InvitationalOct 9 · 3,000 Meters 9-10 · Place 32 · Mercer Island BluebirdsMercer Island Bluebirds3,000 Meters 9-103215:53 PB5