Nora O'Brien

Bib: 13338•F

Masters

0:00

0:00

/ mi

Masters

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Overall

#0 / 28404

Top 30%

Gender (Female)

#0 / 12228

Top 12%

Masters (Masters Women)

#0 / 6759

Top 4%

Division (F40-44)

#0 / 1718

Top 9%

Race Day Weather

50°/40°F

broken clouds

⏱️ Race Timeline

Course Elevation

7–469 ft

≈

×2stacked redwood trees

•▲ 890 ft climb · ▼ 1342 ft descent

Ribbon color based on

FasterSteadySlower· vs. your average pace

Start

0:00

Race begins

5K· 3.11 mi

7:28/mi

23:11

↑ 97 ft↓ 345 ft1.5% grade

10K· 6.21 mi

7:29/mi

46:27

↑ 79 ft↓ 138 ft0.4% grade

15K· 9.32 mi

7:47/mi

1:10:37

↑ 67 ft↓ 78 ft

20K· 12.43 mi

7:28/mi

1:33:49

↑ 106 ft↓ 86 ft0.1% grade

Half· 13.11 mi

7:24/mi

1:38:52

↑ 19 ft↓ 37 ft0.5% grade

25K· 15.53 mi

7:18/mi

1:56:35

↑ 66 ft↓ 88 ft0.2% grade

30K· 18.64 mi

7:23/mi

2:19:32

↑ 181 ft↓ 148 ft0.2% grade

20M

7:22/mi

2:29:33

↑ 64 ft↓ 50 ft0.2% grade

21M

7:34/mi

2:37:07

↑ 106 ft↓ 24 ft1.6% grade

35K· 21.75 mi

7:02/mi

2:42:23

↑ 17 ft↓ 86 ft1.7% grade

23M

7:21/mi

2:51:35

↑ 23 ft↓ 63 ft0.6% grade

24M

6:58/mi

2:58:33

↓ 82 ft1.3% grade

40K· 24.85 mi

7:49/mi

3:05:14

↓ 20 ft0.3% grade

25.2M

7:32/mi

3:07:50

↑ 13 ft↓ 16 ft0.2% grade

Finish· 26.22 mi

6:34/mi

3:14:32

↑ 22 ft↓ 21 ft

The Course

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Half Splits

1st Half· via Half

Distance13.11 mi

Time1:38:52

Pace7:32 /mi

2nd Half✓ Faster

Distance13.11 mi

Time1:35:40

Pace7:18 /mi

📊Negative Split: 3.2% faster second half

Checkpoint Splits

Checkpoint	Distance	Time of Day	Time	Avg Pace	Segment Time	Segment Pace	Diff
5K	3.11 mi	10:52:50	23:11	7:28	23:11	7:28	-
10K	6.21 mi	11:16:06	46:27	7:29	23:16	7:29	+0:01
15K	9.32 mi	11:40:16	1:10:37	7:35	24:10	7:47	+0:18
20K	12.43 mi	12:03:28	1:33:49	7:33	23:12	7:28	-0:19
Half	13.11 mi	12:08:31	1:38:52	7:32	5:03	7:24	-0:04
25K	15.53 mi	12:26:14	1:56:35	7:30	17:43	7:18	-0:06
30K	18.64 mi	12:49:11	2:19:32	7:29	22:57	7:23	+0:05
20M	20.00 mi	12:59:12	2:29:33	7:29	10:01	7:22	-0:01
21M	21.00 mi	13:06:46	2:37:07	7:29	7:34	7:34	+0:12
35K	21.75 mi	13:12:02	2:42:23	7:28	5:16	7:02	-0:32
23M	23.00 mi	13:21:14	2:51:35	7:28	9:12	7:21	+0:19
24M	24.00 mi	13:28:12	2:58:33	7:26	6:58	6:58	-0:23
40K	24.85 mi	13:34:53	3:05:14	7:27	6:41	7:49	+0:51
25.2M	25.20 mi	13:37:29	3:07:50	7:27	2:36	7:32	-0:17
Finish	26.22 mi	13:44:11	3:14:32	7:25	6:42	6:34	-0:58

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

6:34 /mi

Average Pace

7:25 /mi

Slowest Pace

7:49 /mi

Loading chart...

Fastest

Middle

Slowest

Average

📊Segments

Segment Time Comparison

Time at Faster Pace

18:56

10% of race

Time at Steady Pace

2:24:45

74% of race

Time at Slower Pace

30:51

16% of race

Average Pace: 7:25 /mi

Loading chart...

Faster pace (< avg)

Steady pace (≈ avg)

Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

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

Pace:

Faster

Steady

Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

Checkpoint	Distance	Time of Day	Time	Avg Pace	Segment	Pace	Rank
5K	3.11 mi	10:52:50	23:11	7:28	23:11	7:28	#11903
10K	6.21 mi	11:16:06	46:27	7:29	23:16	7:29	#11916
15K	9.32 mi	11:40:16	1:10:37	7:35	24:10	7:47	#12654
20K	12.43 mi	12:03:28	1:33:49	7:33	23:12	7:28	#12076
Half	13.11 mi	12:08:31	1:38:52	7:32	5:03	7:24	#11997
25K	15.53 mi	12:26:14	1:56:35	7:30	17:43	7:18	#11372
30K	18.64 mi	12:49:11	2:19:32	7:29	22:57	7:23	#10451
20M	20.00 mi	12:59:12	2:29:33	7:29	10:01	7:22	#10030
21M	21.00 mi	13:06:46	2:37:07	7:29	7:34	7:34	#9655
35K	21.75 mi	13:12:02	2:42:23	7:28	5:16	7:02	#9460
23M	23.00 mi	13:21:14	2:51:35	7:28	9:12	7:21	#9146
24M	24.00 mi	13:28:12	2:58:33	7:26	6:58	6:58	#8868
40K	24.85 mi	13:34:53	3:05:14	7:27	6:41	7:49	#8830
25.2M	25.20 mi	13:37:29	3:07:50	7:27	2:36	7:32	#8699
Finish	26.22 mi	13:44:11	3:14:32	7:25	6:42	6:34	#8392

Faster pace

Steady pace

Slower pace

Checkpoint and Segment Rankings

Checkpoint	Distance	Seg. Dist	Overall	Females	F40-44	Seg. Overall	Seg. Females	Seg. F40-44
5K	3.11 mi	3.11 mi	11903	2738	2738	14180(Top 50%)	4119(Top 34%)	4119(Top 240%)
10K	6.21 mi	3.10 mi	11916-13	2761-23	2761-23	12006(Top 42%)	2817(Top 23%)	2817(Top 164%)
15K	9.32 mi	3.11 mi	12654-738	3177-416	3177-416	14180(Top 50%)	4119(Top 34%)	4119(Top 240%)
20K	12.43 mi	3.11 mi	12076+578	2911+266	2911+266	10484(Top 37%)	2195(Top 18%)	2195(Top 128%)
Half	13.11 mi	0.68 mi	11997+79	2874+37	2874+37	10907(Top 38%)	2349(Top 19%)	2349(Top 137%)
25K	15.53 mi	2.42 mi	11372+625	2577+297	2577+297	8430(Top 30%)	1393(Top 11%)	1393(Top 81%)
30K	18.64 mi	3.11 mi	10451+921	2175+402	2175+402	6991(Top 25%)	1009(Top 8%)	1009(Top 59%)
20M	20.00 mi	1.36 mi	10030+421	1999+176	1999+176	6241(Top 22%)	877(Top 7%)	877(Top 51%)
21M	21.00 mi	1.00 mi	9655+375	1859+140	1859+140	4976(Top 18%)	616(Top 5%)	616(Top 36%)
35K	21.75 mi	0.75 mi	9460+195	1795+64	1795+64	5704(Top 20%)	839(Top 7%)	839(Top 49%)
23M	23.00 mi	1.25 mi	9146+314	1705+90	1705+90	5775(Top 20%)	930(Top 8%)	930(Top 54%)
24M	24.00 mi	1.00 mi	8868+278	1617+88	1617+88	4484(Top 16%)	590(Top 5%)	590(Top 34%)
40K	24.85 mi	0.85 mi	8830+38	1644-27	1644-27	8901(Top 31%)	2398(Top 20%)	2398(Top 140%)
25.2M	25.20 mi	0.35 mi	8699+131	1603+41	1603+41	3692(Top 13%)	494(Top 4%)	494(Top 29%)
Finish	26.22 mi	1.02 mi	8392+307	1505+98	1505+98	3245(Top 11%)	378(Top 3%)	378(Top 22%)

378

Passing Analysis

Category:

Athletes Passed

4626*

Passed By

1115

Net Change

+3511

Segment	Athletes Passed	Passed By	Net Change	Start Rank	End Rank
Start → 5K	-	-	-	-	#11903
5K → 10K	244	257	-13	#11903	#11916
10K → 15K	43	781	-738	#11916	#12654
15K → 20K	588	10	+578	#12654	#12076
20K → Half	86	7	+79	#12076	#11997
Half → 25K	627	2	+625	#11997	#11372
25K → 30K	921	0	+921	#11372	#10451
30K → 20M	422	1	+421	#10451	#10030
20M → 21M	377*	2	+375	#10030	#9655
21M → 35K	196	1	+195	#9655	#9460
35K → 23M	318	4	+314	#9460	#9146
23M → 24M	278	0	+278	#9146	#8868
24M → 40K	87	49	+38	#8868	#8830
40K → 25.2M	132	1	+131	#8830	#8699
25.2M → Finish	307	0	+307	#8699	#8392
TOTALS	4626*	1115	+3511

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:

🔄Passing Circle

🌊Position Flow

🏃Race Lanes

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Results processed 22 days ago

Public Race Data

Enhanced athlete results built from publicly available data.

Race managed by

Boston Athletic Association

Race timed by

Mika Timing