Derek O'Brien

Dublin

Bib: 4244 M

Masters

0:00

0:00

/ mi

Masters

Be the first to cheer!

Overall

#0 / 54109

Top 5%

Gender (Male)

#0 / 29548

Top 8%

Masters (Masters Men)

#0 / 14666

Top 3%

Division (M45-49)

#0 / 3637

Top 4%

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

6:42/mi

20:50

↑ 52 ft↓ 48 ft

601 ft elev

10K· 6.21 mi

6:40/mi

41:33

↑ 25 ft↓ 31 ft

593 ft elev

15K· 9.32 mi

6:35/mi

1:02:01

↑ 12 ft↓ 13 ft

593 ft elev

20K· 12.43 mi

6:40/mi

1:22:44

↑ 18 ft↓ 17 ft

596 ft elev

Half· 13.11 mi

6:47/mi

1:27:22

↑ 13 ft0.2% grade

603 ft elev

25K· 15.53 mi

6:39/mi

1:43:29

↑ 22 ft↓ 30 ft

597 ft elev

30K· 18.64 mi

6:40/mi

2:04:12

↑ 13 ft↓ 12 ft

597 ft elev

35K· 21.75 mi

6:40/mi

2:24:54

↑ 27 ft↓ 27 ft

597 ft elev

40K· 24.85 mi

6:26/mi

2:44:54

↑ 16 ft↓ 11 ft

602 ft elev

Finish· 26.22 mi

6:22/mi

2:53:35

↑ 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

1:27:226:40 /mi+1.3%

2nd Half

1:26:136:35 /mi✓ faster

Negative split — 1.3% faster in the second half

AI Race Performance Report

Derek'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	20:50	6:42	3.11 mi	20:50	6:42	-
10K	41:33	6:41	3.10 mi	20:43	6:40	-0:02
15K	1:02:01	6:39	3.11 mi	20:28	6:35	-0:05
20K	1:22:44	6:39	3.11 mi	20:43	6:40	+0:05
Half(13.11 mi)	1:27:22	6:40	0.68 mi	4:38	6:47	+0:07
25K	1:43:29	6:40	2.42 mi	16:07	6:39	-0:08
30K	2:04:12	6:40	3.11 mi	20:43	6:40	+0:01
35K	2:24:54	6:40	3.11 mi	20:42	6:40	0:00
40K	2:44:54	6:38	3.10 mi	20:00	6:26	-0:14
Finish(26.22 mi)	2:53:35	6:38	1.37 mi	8:41	6:22	-0:04

Trend:

Faster pace

Steady pace

Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

6:22 /mi

Average Pace

6:38 /mi

Slowest Pace

6:47 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

2:28:07

85% of race

Time at Steady Pace

25:28

15% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:37 /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	Males	M45-49	Seg. Overall	Seg. Males	Seg. M45-49
5K	3.11 mi	4113	3763	311	3539	3280	241
10K	3.10 mi	3802+311	3511+252	276+35	3581	3322	257
15K	3.11 mi	3733+69	3449+62	266+10	3539	3280	241
20K	3.11 mi	3655+78	3384+65	257+9	3529	3265	230
Half(13.11 mi)	0.68 mi	3670-15	3399-15	256+1	3980	3640	279
25K	2.42 mi	3586+84	3320+79	245+11	3287	3049	206
30K	3.11 mi	3387+199	3143+177	221+24	2833	2636	177
35K	3.11 mi	3129+258	2912+231	199+22	2284	2128	128
40K	3.10 mi	2648+481	2465+447	159+40	1041	973	45
Finish(26.22 mi)	1.37 mi	2497+151	2322+143	145+14	1247	1154	46

1154

Passing Analysis

No position changes recorded for this athlete.

More below

See the rest of Derek'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