Mara Contreras

Chicago

Bib: 63735 F

0:00

0:00

/ mi

Be the first to cheer!

Overall

#0 / 54109

Gender (Female)

#0 / 24561

Division (F25-29)

#0 / 5362

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

12:18/mi

38:12

↑ 52 ft↓ 48 ft

601 ft elev

10K· 6.21 mi

13:55/mi

1:21:27

↑ 25 ft↓ 31 ft

593 ft elev

15K· 9.32 mi

14:58/mi

2:07:58

↑ 12 ft↓ 13 ft

593 ft elev

20K· 12.43 mi

14:14/mi

2:52:11

↑ 18 ft↓ 17 ft

596 ft elev

Half· 13.11 mi

13:54/mi

3:01:40

↑ 13 ft0.2% grade

603 ft elev

25K· 15.53 mi

15:40/mi

3:39:40

↑ 22 ft↓ 30 ft

597 ft elev

30K· 18.64 mi

14:33/mi

4:24:52

↑ 13 ft↓ 12 ft

597 ft elev

35K· 21.75 mi

14:28/mi

5:09:50

↑ 27 ft↓ 27 ft

597 ft elev

40K· 24.85 mi

15:26/mi

5:57:47

↑ 16 ft↓ 11 ft

602 ft elev

Finish· 26.22 mi

14:06/mi

6:17:01

↑ 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

3:01:4013:51 /mi⚡ faster

2nd Half

3:15:2114:54 /mi+7.5%

Positive split — 7.5% slower in the second half

AI Race Performance Report

Mara'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	38:12	12:18	3.11 mi	38:12	12:18	-
10K	1:21:27	13:06	3.10 mi	43:15	13:55	+1:37
15K	2:07:58	13:44	3.11 mi	46:31	14:58	+1:03
20K	2:52:11	13:51	3.11 mi	44:13	14:14	-0:44
Half(13.11 mi)	3:01:40	13:51	0.68 mi	9:29	13:54	-0:20
25K	3:39:40	14:08	2.42 mi	38:00	15:40	+1:46
30K	4:24:52	14:13	3.11 mi	45:12	14:33	-1:07
35K	5:09:50	14:15	3.11 mi	44:58	14:28	-0:05
40K	5:57:47	14:24	3.10 mi	47:57	15:26	+0:58
Finish(26.22 mi)	6:17:01	14:23	1.37 mi	19:14	14:06	-1:20

Trend:

Faster pace

Steady pace

Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

12:18 /mi

Average Pace

14:23 /mi

Slowest Pace

15:40 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

1:30:56

24% of race

Time at Steady Pace

2:33:37

41% of race

Time at Slower Pace

2:12:28

35% of race

Average Pace: 14:23 /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	F25-29	Seg. Overall	Seg. Females	Seg. F25-29
5K	3.11 mi	50612	22097	4922	53485	24098	5299
10K	3.10 mi	51577-965	22703-606	5066-144	52063	23036	5125
15K	3.11 mi	52626-1049	23446-743	5197-131	53485	24098	5299
20K	3.11 mi	52466+160	23335+111	5171+26	51761	22918	5103
Half(13.11 mi)	0.68 mi	52353+113	23267+68	5164+7	49607	21655	4893
25K	2.42 mi	52426-73	23342-75	5170-6	52263	23357	5157
30K	3.11 mi	52064+362	23122+220	5130+40	48932	21458	4823
35K	3.11 mi	51661+403	22882+240	5094+36	47361	20799	4716
40K	3.10 mi	51453+208	22777+105	5069+25	48598	21710	4839
Finish(26.22 mi)	1.37 mi	51359+94	22734+43	5064+5	48808	21837	4969

21837

Passing Analysis

No position changes recorded for this athlete.

More below

See the rest of Mara'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