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BOSTON MARATHON 2023

Jeannette Brook

Bib: 29917•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:36
Rank: #17993
Start → 5K
26:36 | 8:34/mi
10K· 6.21 mi
51:49
Rank: #16779 (+1214)
5K → 10K
25:13 | 8:07/mi
15K· 9.32 mi
1:17:04
Rank: #16297 (+482)
10K → 15K
25:15 | 8:08/mi
20K· 12.43 mi
1:42:47
Rank: #16063 (+234)
15K → 20K
25:43 | 8:17/mi
Half· 13.11 mi
1:48:21
Rank: #16032 (+31)
20K → Half
5:34 | 8:10/mi
25K· 15.53 mi
2:09:13
Rank: #16165 (-133)
Half → 25K
20:52 | 8:36/mi
30K· 18.64 mi
2:38:24
Rank: #16758 (-593)
25K → 30K
29:11 | 9:24/mi
20M
2:51:12
Rank: #16903 (-145)
30K → 20M
12:48 | 9:25/mi
21M
3:01:40
Rank: #17100 (-197)
20M → 21M
10:28 | 10:28/mi
35K· 21.75 mi
3:08:45
Rank: #17225 (-125)
21M → 35K
7:05 | 9:28/mi
23M
3:20:55
Rank: #17382 (-157)
35K → 23M
12:10 | 9:43/mi
24M
3:30:43
Rank: #17588 (-206)
23M → 24M
9:48 | 9:48/mi
40K· 24.85 mi
3:39:29
Rank: #17793 (-205)
24M → 40K
8:46 | 10:15/mi
25.2M
3:43:25
Rank: #17888 (-95)
40K → 25.2M
3:56 | 11:24/mi
Finish· 26.22 mi
3:53:05
Rank: #17995 (-107)
25.2M → Finish
9:40 | 9:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:21
Pace8:16 /mi
2nd Half
Distance13.11 mi
Time2:04:44
Pace9:31 /mi
📊Positive Split: 15.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:2726:368:3426:36
8:34
-
10K
6.21 mi12:12:4051:498:2025:13
8:07
-0:27
15K
9.32 mi12:37:551:17:048:1625:15
8:08
+0:01
20K
12.43 mi13:03:381:42:478:1625:43
8:17
+0:09
Half
13.11 mi13:09:121:48:218:165:34
8:10
-0:07
25K
15.53 mi13:30:042:09:138:1920:52
8:36
+0:26
30K
18.64 mi13:59:152:38:248:3029:11
9:24
+0:48
20M
20.00 mi14:12:032:51:128:3412:48
9:25
+0:01
21M
21.00 mi14:22:313:01:408:3910:28
10:28
+1:03
35K
21.75 mi14:29:363:08:458:417:05
9:28
-1:00
23M
23.00 mi14:41:463:20:558:4412:10
9:43
+0:15
24M
24.00 mi14:51:343:30:438:479:48
9:48
+0:05
40K
24.85 mi15:00:203:39:298:508:46
10:15
+0:27
25.2M
25.20 mi15:04:163:43:258:523:56
11:24
+1:09
Finish
26.22 mi15:13:563:53:058:549:40
9:29
-1:55

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

8:07 /mi

Average Pace

8:54 /mi

Slowest Pace

11:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:13

55% of race

Time at Steady Pace

1:20:42

35% of race

Time at Slower Pace

23:10

10% of race

Average Pace: 8:53 /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.

Loading...
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

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:47:2726:368:3426:36
8:34
#17993
10K
6.21 mi12:12:4051:498:2025:13
8:07
#16779
15K
9.32 mi12:37:551:17:048:1625:15
8:08
#16297
20K
12.43 mi13:03:381:42:478:1625:43
8:17
#16063
Half
13.11 mi13:09:121:48:218:165:34
8:10
#16032
25K
15.53 mi13:30:042:09:138:1920:52
8:36
#16165
30K
18.64 mi13:59:152:38:248:3029:11
9:24
#16758
20M
20.00 mi14:12:032:51:128:3412:48
9:25
#16903
21M
21.00 mi14:22:313:01:408:3910:28
10:28
#17100
35K
21.75 mi14:29:363:08:458:417:05
9:28
#17225
23M
23.00 mi14:41:463:20:558:4412:10
9:43
#17382
24M
24.00 mi14:51:343:30:438:479:48
9:48
#17588
40K
24.85 mi15:00:203:39:298:508:46
10:15
#17793
25.2M
25.20 mi15:04:163:43:258:523:56
11:24
#17888
Finish
26.22 mi15:13:563:53:058:549:40
9:29
#17995
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi179936554655415360(Top 58%)4889(Top 43%)4889(Top 100%)
10K6.21 mi3.10 mi16779+12145765+7895765+78915653(Top 59%)5055(Top 44%)5055(Top 104%)
15K9.32 mi3.11 mi16297+4825464+3015464+30115360(Top 58%)4889(Top 43%)4889(Top 100%)
20K12.43 mi3.11 mi16063+2345347+1175347+11715485(Top 58%)5024(Top 44%)5024(Top 103%)
Half13.11 mi0.68 mi16032+315331+165331+1615599(Top 59%)5071(Top 44%)5071(Top 104%)
25K15.53 mi2.42 mi16165-1335435-1045435-10416859(Top 63%)5932(Top 52%)5932(Top 121%)
30K18.64 mi3.11 mi16758-5935831-3965831-39619009(Top 71%)7197(Top 63%)7197(Top 147%)
20M20.00 mi1.36 mi16903-1455916-855916-8518547(Top 70%)7049(Top 62%)7049(Top 144%)
21M21.00 mi1.00 mi17100-1976049-1336049-13319493(Top 73%)7635(Top 67%)7635(Top 156%)
35K21.75 mi0.75 mi17225-1256141-926141-9219751(Top 74%)7779(Top 68%)7779(Top 159%)
23M23.00 mi1.25 mi17382-1576248-1076248-10719142(Top 72%)7490(Top 66%)7490(Top 153%)
24M24.00 mi1.00 mi17588-2066389-1416389-14120225(Top 76%)8099(Top 71%)8099(Top 166%)
40K24.85 mi0.85 mi17793-2056511-1226511-12220622(Top 77%)8394(Top 73%)8394(Top 172%)
25.2M25.20 mi0.35 mi17888-956566-556566-5521358(Top 80%)8777(Top 77%)8777(Top 180%)
Finish26.22 mi1.02 mi17995-1076650-846650-8420067(Top 75%)8035(Top 70%)8035(Top 165%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21stories
+97ft-345ft

Overall

15360

Females

4889

F18-39

4889

5K→10K

3.1 - 6.2 mi

Top 59%
×5stories
+79ft-138ft

Overall

15653

Females

5055

F18-39

5055

10K→15K

6.2 - 9.3 mi

Top 58%
×3stories
+67ft-78ft

Overall

15360

Females

4889

F18-39

4889

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

15485

Females

5024

F18-39

5024

20K→Half

12.4 - 13.1 mi

Top 59%
×2stories
+19ft-37ft

Overall

15599

Females

5071

F18-39

5071

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

16859

Females

5932

F18-39

5932

25K→30K

15.5 - 18.6 mi

Top 71%
×9stories
+181ft-148ft

Overall

19009

Females

7197

F18-39

7197

30K→20M

18.6 - 20.0 mi

Top 70%
×5stories
+64ft-50ft

Overall

18547

Females

7049

F18-39

7049

20M→21M

20.0 - 21.0 mi

Top 73%
×8stories
+106ft-24ft

Overall

19493

Females

7635

F18-39

7635

21M→35K

21.0 - 21.8 mi

Top 74%
×7stories
+17ft-86ft

Overall

19751

Females

7779

F18-39

7779

35K→23M

21.8 - 23.0 mi

Top 72%
×5stories
+23ft-63ft

Overall

19142

Females

7490

F18-39

7490

23M→24M

23.0 - 24.0 mi

Top 76%
×6stories
+12ft-82ft

Overall

20225

Females

8099

F18-39

8099

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20622

Females

8394

F18-39

8394

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21358

Females

8777

F18-39

8777

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2stories
+22ft-21ft

Overall

20067

Females

8035

F18-39

8035

Passing Analysis

Category:
Athletes Passed
2507
Passed By
2509
Net Change
-2
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17993
5K → 10K126753+1214#17993#16779
10K → 15K53856+482#16779#16297
15K → 20K29763+234#16297#16063
20K → Half4716+31#16063#16032
Half → 25K105238-133#16032#16165
25K → 30K59652-593#16165#16758
30K → 20M45190-145#16758#16903
20M → 21M32229-197#16903#17100
21M → 35K15140-125#17100#17225
35K → 23M39196-157#17225#17382
23M → 24M21227-206#17382#17588
24M → 40K14219-205#17588#17793
40K → 25.2M6101-95#17793#17888
25.2M → Finish22129-107#17888#17995
TOTALS25072509-2
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing