Irene Castro

Chicago

Bib: 50444 F

Masters

0:00

0:00

/ mi

Masters

Be the first to cheer!

Overall

#0 / 54109

Gender (Female)

#0 / 24561

Masters (Masters Women)

#0 / 9409

Division (F45-49)

#0 / 2581

Race Day Weather

54°/44°F

few clouds

Race Timeline

Ribbon color based on

FasterSteadySlower· vs. your average pace

Start

0:00

Race begins

600 ft elev

5K· 3.11 mi

9:41/mi

30:05

↑ 52 ft↓ 48 ft

601 ft elev

10K· 6.21 mi

10:28/mi

1:02:37

↑ 25 ft↓ 31 ft

593 ft elev

15K· 9.32 mi

11:07/mi

1:37:10

↑ 12 ft↓ 13 ft

593 ft elev

20K· 12.43 mi

12:20/mi

2:15:28

↑ 18 ft↓ 17 ft

596 ft elev

Half· 13.11 mi

12:03/mi

2:23:41

↑ 13 ft0.2% grade

603 ft elev

25K· 15.53 mi

13:00/mi

2:55:12

↑ 22 ft↓ 30 ft

597 ft elev

30K· 18.64 mi

13:16/mi

3:36:25

↑ 13 ft↓ 12 ft

597 ft elev

35K· 21.75 mi

13:48/mi

4:19:16

↑ 27 ft↓ 27 ft

597 ft elev

40K· 24.85 mi

13:42/mi

5:01:51

↑ 16 ft↓ 11 ft

602 ft elev

Finish· 26.22 mi

12:34/mi

5:18:59

↑ 23 ft↓ 20 ft

606 ft elev

Course Elevation

227ft

Total climb

32ft

Range

589 to 621 ft

221ft

Total descent

About the height of a three-story building

The Course

Half Splits

1st Half· via Half

2:23:4110:58 /mi⚡ faster

2nd Half

2:55:1813:22 /mi+22.0%

Positive split — 22.0% slower in the second half

AI Race Performance Report

Irene's race, broken down like a coach

The full Race Story, performance analysis, segment & passing breakdowns, and where the race turned. Free to unlock — for anyone.

Free account · no payment

Checkpoint Splits

Checkpoint	Time	Avg Pace	Segment Length	Segment Time	Segment Pace	Diff
5K	30:05	9:41	3.11 mi	30:05	9:41	-
10K	1:02:37	10:05	3.10 mi	32:32	10:28	+0:47
15K	1:37:10	10:25	3.11 mi	34:33	11:07	+0:39
20K	2:15:28	10:54	3.11 mi	38:18	12:20	+1:13
Half(13.11 mi)	2:23:41	10:58	0.68 mi	8:13	12:03	-0:17
25K	2:55:12	11:17	2.42 mi	31:31	13:00	+0:57
30K	3:36:25	11:37	3.11 mi	41:13	13:16	+0:16
35K	4:19:16	11:55	3.11 mi	42:51	13:48	+0:32
40K	5:01:51	12:09	3.10 mi	42:35	13:42	-0:06
Finish(26.22 mi)	5:18:59	12:10	1.37 mi	17:08	12:34	-1:08

Trend:

Faster pace

Steady pace

Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

9:41 /mi

Average Pace

12:10 /mi

Slowest Pace

13:48 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

1:37:10

30% of race

Time at Steady Pace

1:35:10

30% of race

Time at Slower Pace

2:06:39

40% of race

Average Pace: 12:10 /mi

Loading chart...

Faster pace (< avg)

Steady pace (≈ avg)

Slower pace (> avg)

Heatmap

0mi6.6mi13.1mi19.7mi26.2mi

Pace:

Faster

Steady

Slower

Checkpoint and Segment Rankings

Checkpoint	Seg. Dist	Overall	Females	F45-49	Seg. Overall	Seg. Females	Seg. F45-49
5K	3.11 mi	32792	11437	1221	44540	18155	1861
10K	3.10 mi	35719-2927	12968-1531	1370-149	38558	14561	1532
15K	3.11 mi	38960-3241	14730-1762	1550-180	44540	18155	1861
20K	3.11 mi	42038-3078	16650-1920	1707-157	47469	20142	2077
Half(13.11 mi)	0.68 mi	42172-134	16751-101	1716-9	44159	18260	1843
25K	2.42 mi	43388-1216	17557-806	1801-85	46880	20035	2066
30K	3.11 mi	43917-529	18009-452	1850-49	45224	19300	1980
35K	3.11 mi	44196-279	18297-288	1886-36	45172	19590	2008
40K	3.10 mi	43961+235	18295+2	1883+3	42392	18413	1881
Finish(26.22 mi)	1.37 mi	43942+19	18327-32	1882+1	43234	18955	1879

18955

Passing Analysis

No position changes recorded for this athlete.

More below

See the rest of Irene's race

Checkpoint splits, rankings, passing analysis and qualifying. One free sign-in reveals them here — and on every race you look up.

All Results

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Enhanced athlete results built from publicly available data.

Race managed by

Chicago Event Management

Race timed by

Mika Timing