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BOSTON MARATHON 2023

Leah Brockie

Bib: 13537•F

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0:00
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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 16%
Division (F18-39)
#0 / 4884
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:14
Rank: #9456
Start → 5K
23:14 | 7:29/mi
10K· 6.21 mi
45:49
Rank: #8998 (+458)
5K → 10K
22:35 | 7:16/mi
15K· 9.32 mi
1:08:30
Rank: #8838 (+160)
10K → 15K
22:41 | 7:18/mi
20K· 12.43 mi
1:31:43
Rank: #8851 (-13)
15K → 20K
23:13 | 7:28/mi
Half· 13.11 mi
1:36:43
Rank: #8835 (+16)
20K → Half
5:00 | 7:20/mi
25K· 15.53 mi
1:55:03
Rank: #8880 (-45)
Half → 25K
18:20 | 7:34/mi
30K· 18.64 mi
2:19:29
Rank: #9037 (-157)
25K → 30K
24:26 | 7:52/mi
20M
2:30:19
Rank: #9070 (-33)
30K → 20M
10:50 | 7:58/mi
21M
2:38:40
Rank: #9075 (-5)
20M → 21M
8:21 | 8:21/mi
35K· 21.75 mi
2:44:33
Rank: #9134 (-59)
21M → 35K
5:53 | 7:52/mi
23M
2:54:54
Rank: #9254 (-120)
35K → 23M
10:21 | 8:16/mi
24M
3:03:02
Rank: #9360 (-106)
23M → 24M
8:08 | 8:08/mi
40K· 24.85 mi
3:10:02
Rank: #9422 (-62)
24M → 40K
7:00 | 8:11/mi
25.2M
3:13:06
Rank: #9428 (-6)
40K → 25.2M
3:04 | 8:54/mi
Finish· 26.22 mi
3:21:09
Rank: #9493 (-65)
25.2M → Finish
8:03 | 7:54/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:43
Pace7:23 /mi
2nd Half
Distance13.11 mi
Time1:44:26
Pace7:58 /mi
📊Positive Split: 8.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3623:147:2923:14
7:29
-
10K
6.21 mi11:14:1145:497:2222:35
7:16
-0:13
15K
9.32 mi11:36:521:08:307:2122:41
7:18
+0:02
20K
12.43 mi12:00:051:31:437:2323:13
7:28
+0:10
Half
13.11 mi12:05:051:36:437:235:00
7:20
-0:08
25K
15.53 mi12:23:251:55:037:2418:20
7:34
+0:14
30K
18.64 mi12:47:512:19:297:2924:26
7:52
+0:18
20M
20.00 mi12:58:412:30:197:3110:50
7:58
+0:06
21M
21.00 mi13:07:022:38:407:338:21
8:21
+0:23
35K
21.75 mi13:12:552:44:337:345:53
7:52
-0:29
23M
23.00 mi13:23:162:54:547:3610:21
8:16
+0:24
24M
24.00 mi13:31:243:03:027:388:08
8:08
-0:08
40K
24.85 mi13:38:243:10:027:397:00
8:11
+0:03
25.2M
25.20 mi13:41:283:13:067:403:04
8:54
+0:43
Finish
26.22 mi13:49:313:21:097:418:03
7:54
-1:00

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

7:16 /mi

Average Pace

7:41 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:03

57% of race

Time at Steady Pace

49:12

24% of race

Time at Slower Pace

36:54

18% of race

Average Pace: 7:40 /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 mi10:51:3623:147:2923:14
7:29
#9456
10K
6.21 mi11:14:1145:497:2222:35
7:16
#8998
15K
9.32 mi11:36:521:08:307:2122:41
7:18
#8838
20K
12.43 mi12:00:051:31:437:2323:13
7:28
#8851
Half
13.11 mi12:05:051:36:437:235:00
7:20
#8835
25K
15.53 mi12:23:251:55:037:2418:20
7:34
#8880
30K
18.64 mi12:47:512:19:297:2924:26
7:52
#9037
20M
20.00 mi12:58:412:30:197:3110:50
7:58
#9070
21M
21.00 mi13:07:022:38:407:338:21
8:21
#9075
35K
21.75 mi13:12:552:44:337:345:53
7:52
#9134
23M
23.00 mi13:23:162:54:547:3610:21
8:16
#9254
24M
24.00 mi13:31:243:03:027:388:08
8:08
#9360
40K
24.85 mi13:38:243:10:027:397:00
8:11
#9422
25.2M
25.20 mi13:41:283:13:067:403:04
8:54
#9428
Finish
26.22 mi13:49:313:21:097:418:03
7:54
#9493
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9456160116018569(Top 32%)1274(Top 11%)1274(Top 26%)
10K6.21 mi3.10 mi8998+4581412+1891412+1898648(Top 32%)1281(Top 11%)1281(Top 26%)
15K9.32 mi3.11 mi8838+1601363+491363+498569(Top 32%)1274(Top 11%)1274(Top 26%)
20K12.43 mi3.11 mi8851-131375-121375-129118(Top 34%)1538(Top 13%)1538(Top 31%)
Half13.11 mi0.68 mi8835+161373+21373+28902(Top 33%)1452(Top 13%)1452(Top 30%)
25K15.53 mi2.42 mi8880-451401-281401-289269(Top 35%)1669(Top 15%)1669(Top 34%)
30K18.64 mi3.11 mi9037-1571503-1021503-1029862(Top 37%)2095(Top 18%)2095(Top 43%)
20M20.00 mi1.36 mi9070-331535-321535-3210079(Top 38%)2261(Top 20%)2261(Top 46%)
21M21.00 mi1.00 mi9075-51565-301565-309548(Top 36%)2162(Top 19%)2162(Top 44%)
35K21.75 mi0.75 mi9134-591601-361601-3611140(Top 42%)2927(Top 26%)2927(Top 60%)
23M23.00 mi1.25 mi9254-1201680-791680-7911643(Top 44%)3317(Top 29%)3317(Top 68%)
24M24.00 mi1.00 mi9360-1061741-611741-6112153(Top 46%)3664(Top 32%)3664(Top 75%)
40K24.85 mi0.85 mi9422-621803-621803-6211276(Top 42%)3285(Top 29%)3285(Top 67%)
25.2M25.20 mi0.35 mi9428-61813-101813-1011917(Top 45%)3655(Top 32%)3655(Top 75%)
Finish26.22 mi1.02 mi9493-651864-511864-5111401(Top 43%)3389(Top 30%)3389(Top 69%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21stories
+97ft-345ft

Overall

8569

Females

1274

F18-39

1274

5K→10K

3.1 - 6.2 mi

Top 32%
×5stories
+79ft-138ft

Overall

8648

Females

1281

F18-39

1281

10K→15K

6.2 - 9.3 mi

Top 32%
×3stories
+67ft-78ft

Overall

8569

Females

1274

F18-39

1274

15K→20K

9.3 - 12.4 mi

Top 34%
×5stories
+106ft-86ft

Overall

9118

Females

1538

F18-39

1538

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

8902

Females

1452

F18-39

1452

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9269

Females

1669

F18-39

1669

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

9862

Females

2095

F18-39

2095

30K→20M

18.6 - 20.0 mi

Top 38%
×5stories
+64ft-50ft

Overall

10079

Females

2261

F18-39

2261

20M→21M

20.0 - 21.0 mi

Top 36%
×8stories
+106ft-24ft

Overall

9548

Females

2162

F18-39

2162

21M→35K

21.0 - 21.8 mi

Top 42%
×7stories
+17ft-86ft

Overall

11140

Females

2927

F18-39

2927

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

11643

Females

3317

F18-39

3317

23M→24M

23.0 - 24.0 mi

Top 46%
×6stories
+12ft-82ft

Overall

12153

Females

3664

F18-39

3664

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11276

Females

3285

F18-39

3285

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

11917

Females

3655

F18-39

3655

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

11401

Females

3389

F18-39

3389

Passing Analysis

Category:
Athletes Passed
1530
Passed By
1567
Net Change
-37
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9456
5K → 10K558100+458#9456#8998
10K → 15K22868+160#8998#8838
15K → 20K122135-13#8838#8851
20K → Half3014+16#8851#8835
Half → 25K84129-45#8835#8880
25K → 30K125282-157#8880#9037
30K → 20M76109-33#9037#9070
20M → 21M8186-5#9070#9075
21M → 35K2382-59#9075#9134
35K → 23M51171-120#9134#9254
23M → 24M38144-106#9254#9360
24M → 40K52114-62#9360#9422
40K → 25.2M2430-6#9422#9428
25.2M → Finish38103-65#9428#9493
TOTALS15301567-37
📊

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