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Sean O'Sullivan

Chicago (Marist) · Class of 2027

11 resultsCross Country2025–2026

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Best marks in available results
Event / course	Mark	Meet	Date
3 Miles · Bedford ParkIHSA Class 3A XC Regional - #2B Summit (Argo) · Oct 25	19:38.03	IHSA Class 3A XC Regional - #2B Summit (Argo)	October 25, 2025
3 Miles · Detweiller ParkPND Richard Spring Invitational · Sep 19	16:56.90	PND Richard Spring Invitational	September 19, 2026
3 Miles · Horner ParkDePaul Ram Invite/Catholic Cup · Sep 12	17:34.04	DePaul Ram Invite/Catholic Cup	September 12, 2026
3 Miles · Marmion AcademyMarmion "Run So As To Win" High School Invitational · Sep 16	18:06.68	Marmion "Run So As To Win" High School Invitational	September 16, 2026
3 Miles · Marquette ParkSolorio Sun Warrior Invitational · Oct 3	17:09.0	Solorio Sun Warrior Invitational	October 3, 2026
3 Miles · Midlothian MeadowsTinley Park Tolfree-Farley XC Invitational · Sep 26	17:18.1	Tinley Park Tolfree-Farley XC Invitational	September 26, 2026
3 Miles · Midlothian MeadowsTinley Park Tollfree Farley Invite · Sep 27	18:14.20	Tinley Park Tollfree Farley Invite	September 27, 2025
3 Miles · Rich EastJimmy Daniels · Oct 10	17:27.12	Jimmy Daniels	October 10, 2026
3 Miles · Rich Township High School (FAC)Jimmy Daniels XC Invitational · Oct 11	17:16.33	Jimmy Daniels XC Invitational	October 11, 2025
3 Miles · Settler's Hill CC CourseEast Suburban Catholic XC Conference Championships · Oct 18	17:13.00	East Suburban Catholic XC Conference Championships	October 18, 2025
5,000 Meters · Lyons Township High School South Campus2026 IHSA Class 3A XC Sectional - #2 LaGrange (Lyons) · Oct 31	17:35.96	2026 IHSA Class 3A XC Sectional - #2 LaGrange (Lyons)	October 31, 2026

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

Date	Meet	Event	Pl	Mark	Gr
Oct 31	2026 IHSA Class 3A XC Sectional - #2 LaGrange (Lyons)Oct 31 · 5,000 Meters Varsity · Place 117 · Chicago (Marist)	5,000 Meters Varsity	117	17:35.96 PB	12
Oct 10	Jimmy DanielsOct 10 · 3 Miles Varsity · Place 30 · Chicago (Marist)	3 Miles Varsity	30	17:27.12 PB	12
Oct 3	Solorio Sun Warrior InvitationalOct 3 · 3 Miles Varsity · Place 21 · Chicago (Marist)	3 Miles Varsity	21	17:09.0 PB	12
Sep 26	Tinley Park Tolfree-Farley XC InvitationalSep 26 · 3 Miles Championship Varsity · Place 26 · Chicago (Marist)	3 Miles Championship Varsity	26	17:18.1 PB	12
Sep 19	PND Richard Spring InvitationalSep 19 · 3 Miles Varsity Boys · Place 341 · Chicago (Marist)	3 Miles Varsity Boys	341	16:56.90 PB	12
Sep 16	Marmion "Run So As To Win" High School InvitationalSep 16 · 3 Miles Varsity/JV · Place 52 · Chicago (Marist)	3 Miles Varsity/JV	52	18:06.68 PB	12
Sep 12	DePaul Ram Invite/Catholic CupSep 12 · 3 Miles Varsity · Place 70 · Chicago (Marist)	3 Miles Varsity	70	17:34.04 PB	12

Date	Meet	Event	Pl	Mark	Gr
Oct 25	IHSA Class 3A XC Regional - #2B Summit (Argo)Oct 25 · 3 Miles Varsity · Place 74 · Chicago (Marist)	3 Miles Varsity	74	19:38.03 PB	11
Oct 18	East Suburban Catholic XC Conference ChampionshipsOct 18 · 3 Miles Varsity · Place 12 · Chicago (Marist)	3 Miles Varsity	12	17:13.00 PB	11
Oct 11	Jimmy Daniels XC InvitationalOct 11 · 3 Miles Varsity · Place 20 · Chicago (Marist)	3 Miles Varsity	20	17:16.33 PB	11
Sep 27	Tinley Park Tollfree Farley InviteSep 27 · 3 Miles Championship Varsity · Place 35 · Chicago (Marist)	3 Miles Championship Varsity	35	18:14.20 PB	11