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BOSTON MARATHON 2023

Erin Castillo

Bib: 15099•F

NM

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 47%
Gender (Female)
#0 / 11423
Top 30%
Division (F18-39)
#0 / 4884
Top 48%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:49
Rank: #11178
Start → 5K
23:49 | 7:40/mi
10K· 6.21 mi
47:34
Rank: #11399 (-221)
5K → 10K
23:45 | 7:39/mi
15K· 9.32 mi
1:11:22
Rank: #11431 (-32)
10K → 15K
23:48 | 7:40/mi
20K· 12.43 mi
1:35:57
Rank: #11705 (-274)
15K → 20K
24:35 | 7:55/mi
Half· 13.11 mi
1:41:14
Rank: #11739 (-34)
20K → Half
5:17 | 7:45/mi
25K· 15.53 mi
2:00:28
Rank: #11770 (-31)
Half → 25K
19:14 | 7:56/mi
30K· 18.64 mi
2:26:38
Rank: #12180 (-410)
25K → 30K
26:10 | 8:25/mi
20M
2:38:36
Rank: #12462 (-282)
30K → 20M
11:58 | 8:48/mi
21M
2:47:48
Rank: #12588 (-126)
20M → 21M
9:12 | 9:12/mi
35K· 21.75 mi
2:53:59
Rank: #12633 (-45)
21M → 35K
6:11 | 8:16/mi
23M
3:04:32
Rank: #12622 (+11)
35K → 23M
10:33 | 8:26/mi
24M
3:12:46
Rank: #12629 (-7)
23M → 24M
8:14 | 8:14/mi
40K· 24.85 mi
3:20:02
Rank: #12655 (-26)
24M → 40K
7:16 | 8:30/mi
25.2M
3:23:06
Rank: #12640 (+15)
40K → 25.2M
3:04 | 8:54/mi
Finish· 26.22 mi
3:31:01
Rank: #12542 (+98)
25.2M → Finish
7:55 | 7:46/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:14
Pace7:43 /mi
2nd Half
Distance13.11 mi
Time1:49:47
Pace8:22 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:2123:497:4023:49
7:40
-
10K
6.21 mi11:18:0647:347:3923:45
7:39
-0:01
15K
9.32 mi11:41:541:11:227:3923:48
7:40
+0:01
20K
12.43 mi12:06:291:35:577:4324:35
7:55
+0:15
Half
13.11 mi12:11:461:41:147:435:17
7:45
-0:10
25K
15.53 mi12:31:002:00:287:4519:14
7:56
+0:11
30K
18.64 mi12:57:102:26:387:5226:10
8:25
+0:29
20M
20.00 mi13:09:082:38:367:5611:58
8:48
+0:23
21M
21.00 mi13:18:202:47:487:599:12
9:12
+0:24
35K
21.75 mi13:24:312:53:598:006:11
8:16
-0:56
23M
23.00 mi13:35:043:04:328:0110:33
8:26
+0:10
24M
24.00 mi13:43:183:12:468:028:14
8:14
-0:12
40K
24.85 mi13:50:343:20:028:037:16
8:30
+0:16
25.2M
25.20 mi13:53:383:23:068:043:04
8:54
+0:24
Finish
26.22 mi14:01:333:31:018:037:55
7:46
-1:08

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

7:39 /mi

Average Pace

8:03 /mi

Slowest Pace

9:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:08:23

61% of race

Time at Steady Pace

51:08

24% of race

Time at Slower Pace

31:30

15% of race

Average Pace: 8:03 /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 mi10:54:2123:497:4023:49
7:40
#11178
10K
6.21 mi11:18:0647:347:3923:45
7:39
#11399
15K
9.32 mi11:41:541:11:227:3923:48
7:40
#11431
20K
12.43 mi12:06:291:35:577:4324:35
7:55
#11705
Half
13.11 mi12:11:461:41:147:435:17
7:45
#11739
25K
15.53 mi12:31:002:00:287:4519:14
7:56
#11770
30K
18.64 mi12:57:102:26:387:5226:10
8:25
#12180
20M
20.00 mi13:09:082:38:367:5611:58
8:48
#12462
21M
21.00 mi13:18:202:47:487:599:12
9:12
#12588
35K
21.75 mi13:24:312:53:598:006:11
8:16
#12633
23M
23.00 mi13:35:043:04:328:0110:33
8:26
#12622
24M
24.00 mi13:43:183:12:468:028:14
8:14
#12629
40K
24.85 mi13:50:343:20:028:037:16
8:30
#12655
25.2M
25.20 mi13:53:383:23:068:043:04
8:54
#12640
Finish
26.22 mi14:01:333:31:018:037:55
7:46
#12542
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi111782425242511527(Top 43%)2649(Top 23%)2649(Top 54%)
10K6.21 mi3.10 mi11399-2212546-1212546-12111760(Top 44%)2736(Top 24%)2736(Top 56%)
15K9.32 mi3.11 mi11431-322565-192565-1911527(Top 43%)2649(Top 23%)2649(Top 54%)
20K12.43 mi3.11 mi11705-2742747-1822747-18212738(Top 48%)3400(Top 30%)3400(Top 70%)
Half13.11 mi0.68 mi11739-342764-172764-1712313(Top 46%)3105(Top 27%)3105(Top 64%)
25K15.53 mi2.42 mi11770-312798-342798-3412182(Top 46%)3184(Top 28%)3184(Top 65%)
30K18.64 mi3.11 mi12180-4103081-2833081-28313828(Top 52%)4227(Top 37%)4227(Top 87%)
20M20.00 mi1.36 mi12462-2823249-1683249-16815456(Top 58%)5242(Top 46%)5242(Top 107%)
21M21.00 mi1.00 mi12588-1263350-1013350-10114484(Top 54%)4747(Top 42%)4747(Top 97%)
35K21.75 mi0.75 mi12633-453386-363386-3613913(Top 52%)4504(Top 39%)4504(Top 92%)
23M23.00 mi1.25 mi12622+113402-163402-1612762(Top 48%)3941(Top 35%)3941(Top 81%)
24M24.00 mi1.00 mi12629-73431-293431-2912846(Top 48%)4045(Top 35%)4045(Top 83%)
40K24.85 mi0.85 mi12655-263466-353466-3513345(Top 50%)4381(Top 38%)4381(Top 90%)
25.2M25.20 mi0.35 mi12640+153467-13467-111962(Top 45%)3700(Top 32%)3700(Top 76%)
Finish26.22 mi1.02 mi12542+983434+333434+3310485(Top 39%)2938(Top 26%)2938(Top 60%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21stories
+97ft-345ft

Overall

11527

Females

2649

F18-39

2649

5K→10K

3.1 - 6.2 mi

Top 44%
×5stories
+79ft-138ft

Overall

11760

Females

2736

F18-39

2736

10K→15K

6.2 - 9.3 mi

Top 43%
×3stories
+67ft-78ft

Overall

11527

Females

2649

F18-39

2649

15K→20K

9.3 - 12.4 mi

Top 48%
×5stories
+106ft-86ft

Overall

12738

Females

3400

F18-39

3400

20K→Half

12.4 - 13.1 mi

Top 46%
×2stories
+19ft-37ft

Overall

12313

Females

3105

F18-39

3105

Half→25K

13.1 - 15.5 mi

Top 46%
×4stories
+66ft-88ft

Overall

12182

Females

3184

F18-39

3184

25K→30K

15.5 - 18.6 mi

Top 52%
×9stories
+181ft-148ft

Overall

13828

Females

4227

F18-39

4227

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

15456

Females

5242

F18-39

5242

20M→21M

20.0 - 21.0 mi

Top 54%
×8stories
+106ft-24ft

Overall

14484

Females

4747

F18-39

4747

21M→35K

21.0 - 21.8 mi

Top 52%
×7stories
+17ft-86ft

Overall

13913

Females

4504

F18-39

4504

35K→23M

21.8 - 23.0 mi

Top 48%
×5stories
+23ft-63ft

Overall

12762

Females

3941

F18-39

3941

23M→24M

23.0 - 24.0 mi

Top 48%
×6stories
+12ft-82ft

Overall

12846

Females

4045

F18-39

4045

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

13345

Females

4381

F18-39

4381

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

11962

Females

3700

F18-39

3700

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2stories
+22ft-21ft

Overall

10485

Females

2938

F18-39

2938

Passing Analysis

Category:
Athletes Passed
1204
Passed By
2568
Net Change
-1364
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11178
5K → 10K216437-221#11178#11399
10K → 15K174206-32#11399#11431
15K → 20K76350-274#11431#11705
20K → Half2155-34#11705#11739
Half → 25K130161-31#11739#11770
25K → 30K87497-410#11770#12180
30K → 20M37319-282#12180#12462
20M → 21M57183-126#12462#12588
21M → 35K3479-45#12588#12633
35K → 23M9079+11#12633#12622
23M → 24M7481-7#12622#12629
24M → 40K4975-26#12629#12655
40K → 25.2M3722+15#12655#12640
25.2M → Finish12224+98#12640#12542
TOTALS12042568-1364
📊

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