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BOSTON MARATHON 2023

Shea Zablan

Bib: 8448•F

AL

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 18%
Gender (Female)
#0 / 11423
Top 3%
Division (F18-39)
#0 / 4884
Top 7%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:58
Rank: #4140
Start → 5K
20:58 | 6:45/mi
10K· 6.21 mi
42:10
Rank: #4858 (-718)
5K → 10K
21:12 | 6:49/mi
15K· 9.32 mi
1:03:20
Rank: #4965 (-107)
10K → 15K
21:10 | 6:49/mi
20K· 12.43 mi
1:24:36
Rank: #4921 (+44)
15K → 20K
21:16 | 6:51/mi
Half· 13.11 mi
1:29:09
Rank: #4871 (+50)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:45:42
Rank: #4744 (+127)
Half → 25K
16:33 | 6:50/mi
30K· 18.64 mi
2:07:13
Rank: #4531 (+213)
25K → 30K
21:31 | 6:56/mi
20M
2:16:48
Rank: #4509 (+22)
30K → 20M
9:35 | 7:03/mi
21M
2:24:23
Rank: #4547 (-38)
20M → 21M
7:35 | 7:35/mi
35K· 21.75 mi
2:29:48
Rank: #4638 (-91)
21M → 35K
5:25 | 7:14/mi
23M
2:39:35
Rank: #4844 (-206)
35K → 23M
9:47 | 7:49/mi
24M
2:47:06
Rank: #4939 (-95)
23M → 24M
7:31 | 7:31/mi
40K· 24.85 mi
2:53:29
Rank: #4959 (-20)
24M → 40K
6:23 | 7:28/mi
25.2M
2:56:09
Rank: #4944 (+15)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
3:03:21
Rank: #4920 (+24)
25.2M → Finish
7:12 | 7:04/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:09
Pace6:48 /mi
2nd Half
Distance13.11 mi
Time1:34:12
Pace7:11 /mi
📊Positive Split: 5.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:0820:586:4520:58
6:45
-
10K
6.21 mi11:07:2042:106:4721:12
6:49
+0:04
15K
9.32 mi11:28:301:03:206:4821:10
6:49
0:00
20K
12.43 mi11:49:461:24:366:4821:16
6:51
+0:02
Half
13.11 mi11:54:191:29:096:484:33
6:40
-0:11
25K
15.53 mi12:10:521:45:426:4816:33
6:50
+0:10
30K
18.64 mi12:32:232:07:136:4921:31
6:56
+0:06
20M
20.00 mi12:41:582:16:486:509:35
7:03
+0:07
21M
21.00 mi12:49:332:24:236:537:35
7:35
+0:32
35K
21.75 mi12:54:582:29:486:535:25
7:14
-0:21
23M
23.00 mi13:04:452:39:356:569:47
7:49
+0:35
24M
24.00 mi13:12:162:47:066:587:31
7:31
-0:18
40K
24.85 mi13:18:392:53:296:596:23
7:28
-0:03
25.2M
25.20 mi13:21:192:56:096:592:40
7:44
+0:16
Finish
26.22 mi13:28:313:03:217:007:12
7:04
-0:40

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

6:40 /mi

Average Pace

7:00 /mi

Slowest Pace

7:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:29:25

81% of race

Time at Steady Pace

33:56

19% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:00 /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 mi10:46:0820:586:4520:58
6:45
#4140
10K
6.21 mi11:07:2042:106:4721:12
6:49
#4858
15K
9.32 mi11:28:301:03:206:4821:10
6:49
#4965
20K
12.43 mi11:49:461:24:366:4821:16
6:51
#4921
Half
13.11 mi11:54:191:29:096:484:33
6:40
#4871
25K
15.53 mi12:10:521:45:426:4816:33
6:50
#4744
30K
18.64 mi12:32:232:07:136:4921:31
6:56
#4531
20M
20.00 mi12:41:582:16:486:509:35
7:03
#4509
21M
21.00 mi12:49:332:24:236:537:35
7:35
#4547
35K
21.75 mi12:54:582:29:486:535:25
7:14
#4638
23M
23.00 mi13:04:452:39:356:569:47
7:49
#4844
24M
24.00 mi13:12:162:47:066:587:31
7:31
#4939
40K
24.85 mi13:18:392:53:296:596:23
7:28
#4959
25.2M
25.20 mi13:21:192:56:096:592:40
7:44
#4944
Finish
26.22 mi13:28:313:03:217:007:12
7:04
#4920
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi41402542545264(Top 20%)393(Top 3%)393(Top 8%)
10K6.21 mi3.10 mi4858-718338-84338-845541(Top 21%)437(Top 4%)437(Top 9%)
15K9.32 mi3.11 mi4965-107350-12350-125264(Top 20%)393(Top 3%)393(Top 8%)
20K12.43 mi3.11 mi4921+44335+15335+154892(Top 18%)346(Top 3%)346(Top 7%)
Half13.11 mi0.68 mi4871+50331+4331+44150(Top 16%)266(Top 2%)266(Top 5%)
25K15.53 mi2.42 mi4744+127322+9322+94402(Top 17%)298(Top 3%)298(Top 6%)
30K18.64 mi3.11 mi4531+213296+26296+263854(Top 14%)241(Top 2%)241(Top 5%)
20M20.00 mi1.36 mi4509+22301-5301-54368(Top 16%)344(Top 3%)344(Top 7%)
21M21.00 mi1.00 mi4547-38303-2303-25022(Top 19%)525(Top 5%)525(Top 11%)
35K21.75 mi0.75 mi4638-91315-12315-126791(Top 26%)1009(Top 9%)1009(Top 21%)
23M23.00 mi1.25 mi4844-206348-33348-338518(Top 32%)1793(Top 16%)1793(Top 37%)
24M24.00 mi1.00 mi4939-95381-33381-337824(Top 29%)1599(Top 14%)1599(Top 33%)
40K24.85 mi0.85 mi4959-20387-6387-66517(Top 24%)1153(Top 10%)1153(Top 24%)
25.2M25.20 mi0.35 mi4944+15388-1388-15088(Top 19%)733(Top 6%)733(Top 15%)
Finish26.22 mi1.02 mi4920+24390-2390-25634(Top 21%)947(Top 8%)947(Top 19%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5264

Females

393

F18-39

393

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

5541

Females

437

F18-39

437

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5264

Females

393

F18-39

393

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

4892

Females

346

F18-39

346

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4150

Females

266

F18-39

266

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4402

Females

298

F18-39

298

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3854

Females

241

F18-39

241

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4368

Females

344

F18-39

344

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

5022

Females

525

F18-39

525

21M→35K

21.0 - 21.8 mi

Top 26%
×7stories
+17ft-86ft

Overall

6791

Females

1009

F18-39

1009

35K→23M

21.8 - 23.0 mi

Top 32%
×5stories
+23ft-63ft

Overall

8518

Females

1793

F18-39

1793

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7824

Females

1599

F18-39

1599

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6517

Females

1153

F18-39

1153

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5088

Females

733

F18-39

733

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2stories
+22ft-21ft

Overall

5634

Females

947

F18-39

947

Passing Analysis

Category:
Athletes Passed
1020
Passed By
1800
Net Change
-780
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4140
5K → 10K34752-718#4140#4858
10K → 15K81188-107#4858#4965
15K → 20K12379+44#4965#4921
20K → Half544+50#4921#4871
Half → 25K16437+127#4871#4744
25K → 30K25643+213#4744#4531
30K → 20M6745+22#4531#4509
20M → 21M5189-38#4509#4547
21M → 35K21112-91#4547#4638
35K → 23M32238-206#4638#4844
23M → 24M23118-95#4844#4939
24M → 40K3555-20#4939#4959
40K → 25.2M2611+15#4959#4944
25.2M → Finish5329+24#4944#4920
TOTALS10201800-780
📊

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