Racecast

Liam Sfeir

Naperville (Central) (IL) · 9 · DUPAGE VALLEYIL D3A · Compare head to head

what a rating means
100 is the average runner in the athlete's pool; a rating of 133 means 33% faster than that average runner. Ratings are distance-normalised and course-adjusted, so a hard course and a fast track land on one number. Each pool (high school boys, college women, middle school…) has its own average, and the HS-equivalent view puts every pool on the high-school scale.
Athlete rating 79.4 2026 TF season
Best race 82.9 TF
Races 17
Seasons 2 2025 — 2026

RankedNation #156535·IL #7815·IL D3A #4940·DUPAGE VALLEY #262·Team #93 ?

Speed rating — all races

Cross Country

XC speed rating

2025 XC 73.5

Naperville (Central) (IL) · Grade 9

Date Meet Event Result Place Rating Difficulty PR/SR Flags
2025-10-21 Plainfield Central High School 4828m 24:24.2 159th · 23rd on team 81.1 -2.2% ★PR ★CR R SR CSR RSR
2025-10-08 Settler's Hill CC Course 4828m 26:47.9 374th · 39th on team 73.6 -1.8% CR CSR
2025-10-08 Settler's Hill CC Course 4828m 26:47.8 374th · 39th on team 73.6 -1.8% ★CR CSR
2025-10-01 Green Valley Forest Preserve 4828m 26:32.5 73rd · 37th on team 75.4 -0.2% PR ★CR R SR CSR RSR
2025-09-20 Detweiller Park 4828m 26:36.29 488th · 44th on team 73.1 -2.7% PR ★CR R SR CSR RSR
2025-09-11 Katherine Legge Memorial Park 3106m 17:00.08 122nd · 28th on team 71.8 -1.5%
2025-09-06 Katherine Legge Memorial Park 3106m 16:42.8 299th · 7th on team 71.9 -1.5% ★PR ★CR R SR CSR RSR
2025-08-25 Yorkville High School 4828m 28:59.2 160th · 58th on team 67.0 -2.3% PR ★CR R SR CSR RSR

Track & Field

TF speed rating

2026 TF 76.8

Naperville (Central) (IL) · Grade 9

Date Meet Event Result Place Rating Difficulty PR/SR Flags
2026-05-05 Mike Kennedy DVC JV Conference Meet 800m 3:11.13 50th · 18th on team 78.9 +0.2% ★PR SR
2026-04-28 Neuqua Valley Boys Quad 1600m 6:46.46 27th · 10th on team 82.9 +0.2% ★PR ★R SR RSR
2026-04-08 Hinsdale Central vs. Naperville Central Dual 3200m 15:27.91 26th · 18th on team 78.3 -0.5% ★PR SR
2026-03-13 Oswego Boys Quad 800m 3:12.96 41st · 20th on team 79.7 +2.1% PR SR RSR
2026-02-27 Mid-Season Time Trial 1600m 7:11.6 37th · 37th on team 77.8 -0.2% PR SR RSR
2026-02-27 Mid-Season Time Trial 400m 1:35.24 33rd · 33rd on team -0.2% ★PR SR
2026-02-20 WWS Boys Indoor Invitational #1 800m 3:35.5 37th · 21st on team 71.1 -2.1% PR SR
2026-02-07 York Boys Quad #1 1600m 7:43.22 21st · 6th on team 72.5 -1.4%
2026-01-31 2026 Redhawk Intra-Squad 1600m 7:38.46 51st · 51st on team 73.2 -1.5% PR SR RSR