Leah O’Neill

Boston

Bib: 64278 F

0:00

0:00

/ mi

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Overall

#0 / 54109

Gender (Female)

#0 / 24561

Division (F30-34)

#0 / 4161

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

10:50/mi

33:40

↑ 52 ft↓ 48 ft

601 ft elev

10K· 6.21 mi

10:54/mi

1:07:33

↑ 25 ft↓ 31 ft

593 ft elev

15K· 9.32 mi

10:45/mi

1:40:58

↑ 12 ft↓ 13 ft

593 ft elev

20K· 12.43 mi

10:56/mi

2:14:57

↑ 18 ft↓ 17 ft

596 ft elev

Half· 13.11 mi

10:52/mi

2:22:22

↑ 13 ft0.2% grade

603 ft elev

25K· 15.53 mi

10:40/mi

2:48:13

↑ 22 ft↓ 30 ft

597 ft elev

30K· 18.64 mi

11:49/mi

3:24:57

↑ 13 ft↓ 12 ft

597 ft elev

35K· 21.75 mi

12:43/mi

4:04:26

↑ 27 ft↓ 27 ft

597 ft elev

40K· 24.85 mi

13:01/mi

4:44:52

↑ 16 ft↓ 11 ft

602 ft elev

Finish· 26.22 mi

9:52/mi

4:58:19

↑ 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

2:22:2210:52 /mi⚡ faster

2nd Half

2:35:5711:54 /mi+9.5%

Positive split — 9.5% slower in the second half

AI Race Performance Report

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Checkpoint Splits

Checkpoint	Time	Avg Pace	Segment Length	Segment Time	Segment Pace	Diff
5K	33:40	10:50	3.11 mi	33:40	10:50	-
10K	1:07:33	10:52	3.10 mi	33:53	10:54	+0:04
15K	1:40:58	10:50	3.11 mi	33:25	10:45	-0:09
20K	2:14:57	10:52	3.11 mi	33:59	10:56	+0:11
Half(13.11 mi)	2:22:22	10:52	0.68 mi	7:25	10:52	-0:04
25K	2:48:13	10:50	2.42 mi	25:51	10:40	-0:12
30K	3:24:57	11:00	3.11 mi	36:44	11:49	+1:09
35K	4:04:26	11:14	3.11 mi	39:29	12:43	+0:54
40K	4:44:52	11:28	3.10 mi	40:26	13:01	+0:18
Finish(26.22 mi)	4:58:19	11:23	1.37 mi	13:27	9:52	-3:09

Trend:

Faster pace

Steady pace

Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

9:52 /mi

Average Pace

11:23 /mi

Slowest Pace

13:01 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

13:27

5% of race

Time at Steady Pace

2:48:13

56% of race

Time at Slower Pace

1:56:39

39% of race

Average Pace: 11:23 /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	F30-34	Seg. Overall	Seg. Females	Seg. F30-34
5K	3.11 mi	42765	17045	2928	42326	16787	2945
10K	3.10 mi	41973+792	16566+479	2884+44	41550	16355	2859
15K	3.11 mi	41991-18	16584-18	2895-11	42326	16787	2945
20K	3.11 mi	41727+264	16462+122	2880+15	41206	16250	2855
Half(13.11 mi)	0.68 mi	41458+269	16310+152	2863+17	38109	14648	2612
25K	2.42 mi	40525+933	15818+492	2781+82	36722	13990	2507
30K	3.11 mi	40359+166	15887-69	2787-6	39607	16020	2798
35K	3.11 mi	40625-266	16206-319	2837-50	41078	17292	3004
40K	3.10 mi	40591+34	16365-159	2877-40	39272	16793	2924
Finish(26.22 mi)	1.37 mi	39980+611	16070+295	2828+49	25300	9613	1828

9613

Passing Analysis

No position changes recorded for this athlete.

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Public Race Data

Enhanced athlete results built from publicly available data.

Race managed by

Chicago Event Management

Race timed by

Mika Timing