Racecast

Zander Duffin

Caledonia (Duncan-Kraft) (MI) · 8 · WMMSC · 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 119.0 2025 TF season
Best race 119.3 TF
Races 23
Seasons 4 2022 — 2025

RankedNation #10735·MI #799·Team #3 ?

Training paces & VO2max → critical speed 7:47/mi, fitted from 11 races in 2024

Rating scale ?
Speed rating — all races

Cross Country

XC speed rating

2024 XC 114.7

Caledonia (Duncan-Kraft) (MI) · Grade 8

Date Meet Event Result Place Rating Difficulty PR/SR Flags
2024-10-15 GRPS Northeast Campus 3218m 12:32.6 34th · 4th on team 118.9 -2.1% ★PR ★CR R SR CSR RSR
2024-10-08 Wayland Middle School 3218m 13:05.9 22nd · 4th on team 118.4 +1.2% PR ★CR R SR CSR RSR
2024-10-01 East Kentwood HS 3218m 13:15.1 25th · 4th on team 117.4 +2.6% ★CR R CSR RSR
2024-09-26 Wayland Middle School 3218m 13:34.2 16th · 6th on team 114.7 +1.2% CR R CSR RSR
2024-09-19 East Rockford MS 3218m 13:11.2 22nd · 3rd on team 114.0 -1.8% PR ★CR R SR CSR RSR
2024-09-17 Holland Christian 3218m 13:12.2 19th · 5th on team 110.9 -4.1% PR ★CR SR CSR RSR
2024-09-10 Unity Christian High School 3218m 14:49.3 48th · 5th on team 108.5 +4.3% ★CR SR CSR RSR

2023 XC 106.3

Caledonia (Duncan-Kraft) (MI) · Grade 7

Date Meet Event Result Place Rating Difficulty PR/SR Flags
2023-10-10 TK High School 3218m 14:26.5 52nd · 22nd on team 106.4 +1.1% ★CR CSR
2023-10-03 Kenowa Hills High School Athletic Field 3218m 14:20.3 62nd · 18th on team 106.1 -2.1% ★CR CSR
2023-09-28 Wayland Middle School 3218m 15:01.5 59th · 23rd on team 102.0 +1.2% CR CSR
2023-09-21 East Rockford MS 3218m 13:47.1 25th · 3rd on team 109.3 -1.8% PR CR SR CSR RSR
2023-09-19 Kraft Meadows MS 3218m 14:03.7 58th · 16th on team 108.1 -0.2% PR ★CR SR CSR RSR
2023-09-12 Forest Hills Eastern HS OFFICIAL 3218m 14:10.8 66th · 16th on team 106.0 -1.7% ★CR SR CSR RSR

2022 XC 100.1

Caledonia (Duncan-Kraft) (MI) · Grade 6

Date Meet Event Result Place Rating Difficulty PR/SR Flags
2022-10-06 Caledonia HS 3218m 14:15.3 53rd · 19th on team 107.3 -1.2% ★CR CSR
2022-10-04 Byron Center West Middle School 3218m 14:06.9 39th · 13th on team 112.9 +3.8% PR ★CR R SR CSR RSR
2022-09-27 Johnson Park 3218m 16:33.1 108th · 28th on team 93.3 -1.1% ★CR CSR
2022-09-24 Calvin College - Gainey Athletic Complex 3200m 16:07 140th · 25th on team 95.2 +1.1% ★PR ★CR SR CSR
2022-09-13 Rycenga Park 3218m 15:50 47th · 21st on team 96.4 +1.0% PR ★CR R SR CSR RSR
2022-09-07 Coopersville HS 3218m 16:02 109th · 23rd on team 95.6 -0.6% PR ★CR R SR CSR RSR

Track & Field

TF speed rating

2025 TF 116.0

Caledonia (Duncan-Kraft) (MI) · Grade 8

Date Meet Event Result Place Rating Difficulty PR/SR Flags
2025-05-14 MS Conference Meet 1600m 5:30.96 8th · 3rd on team 119.3 0.0% ★PR ★R SR RSR
2025-05-08 TK and Caledonia at Baldwin Street MS 1600m 5:33.95 4th · 3rd on team 118.7 -0.1% PR SR RSR
2025-05-02 Jenison Jr High and Caledonia at Riley Street MS 1600m 5:48.27 11th · 5th on team 113.4 -0.1% PR SR RSR
2025-04-21 Caledonia at EGR MS 1600m 5:58.3 6th · 3rd on team 112.3 +0.3% PR SR RSR