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BOSTON MARATHON 2023

Melissa Castillo

NY

Bib: 15132 F

0:00
0:00
/ mi
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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

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:31/mi
23:21
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:27/mi
46:31
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:26/mi
1:09:37
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:32/mi
1:33:02
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:30/mi
1:38:09
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:32/mi
1:56:26
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:57/mi
2:21:07
↑ 181↓ 1480.2%
138 ft elev
20M
7:58/mi
2:31:56
↑ 64↓ 500.2%
148 ft elev
21M
9:05/mi
2:41:01
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:36/mi
2:46:42
↑ 17↓ 861.7%
156 ft elev
23M
7:58/mi
2:56:40
↑ 23↓ 630.6%
116 ft elev
24M
7:35/mi
3:04:15
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:33/mi
3:10:42
↓ 200.3%
20 ft elev
25.2M
8:04/mi
3:13:29
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:24/mi
3:21:01
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:38:097:29 /mi⚡ faster
2nd Half
1:42:527:51 /mi+4.8%
Positive split — 4.8% slower in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
23:217:313.11 mi23:21
7:31
-
10K
46:317:293.10 mi23:10
7:27
-0:04
15K
1:09:377:283.11 mi23:06
7:26
-0:01
20K
1:33:027:293.11 mi23:25
7:32
+0:06
Half(13.11 mi)
1:38:097:290.68 mi5:07
7:30
-0:02
25K
1:56:267:302.42 mi18:17
7:32
+0:02
30K
2:21:077:343.11 mi24:41
7:57
+0:25
20M
2:31:567:361.36 mi10:49
7:58
+0:01
21M
2:41:017:401.00 mi9:05
9:05
+1:07
35K
2:46:427:400.75 mi5:41
7:36
-1:29
23M
2:56:407:411.25 mi9:58
7:58
+0:22
24M
3:04:157:411.00 mi7:35
7:35
-0:23
40K
3:10:427:400.85 mi6:27
7:33
-0:02
25.2M
3:13:297:410.35 mi2:47
8:04
+0:31
Finish(26.22 mi)
3:21:017:401.02 mi7:32
7:24
-0:40
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:24 /mi

Average Pace

7:40 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:23:41

71% of race

Time at Slower Pace

57:20

29% of race

Average Pace: 7:40 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi977417461746965916921692
10K3.10 mi9899-1251796-501796-501013618841884
15K3.11 mi9775+1241739+571739+57965916921692
20K3.11 mi9702+731704+351704+35962917471747
Half(13.11 mi)0.68 mi9733-311723-191723-191028120142014
25K2.42 mi9608+1251693+301693+30910816011601
30K3.11 mi9737-1291775-821775-821047523732373
20M1.36 mi9712+251798-231798-23997622072207
21M1.00 mi9964-2521930-1321930-1321388844214421
35K0.75 mi9916+481923+71923+7928720402040
23M1.25 mi9855+611929-61929-6949522602260
24M1.00 mi9751+1041910+191910+19831018021802
40K0.85 mi9605+1461871+391871+39702213831383
25.2M0.35 mi9536+691854+171854+17700214251425
Finish(26.22 mi)1.02 mi9459+771846+81846+8777217321732

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9659

Females

1692

F18-39

1692

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

10136

Females

1884

F18-39

1884

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9659

Females

1692

F18-39

1692

15K→20K

9.3 - 12.4 mi

Top 36%
×5story building
+106ft-86ft

Overall

9629

Females

1747

F18-39

1747

20K→Half

12.4 - 13.1 mi

Top 39%
×2story building
+19ft-37ft

Overall

10281

Females

2014

F18-39

2014

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9108

Females

1601

F18-39

1601

25K→30K

15.5 - 18.6 mi

Top 39%
×9story building
+181ft-148ft

Overall

10475

Females

2373

F18-39

2373

30K→20M

18.6 - 20.0 mi

Top 37%
×5story building
+64ft-50ft

Overall

9976

Females

2207

F18-39

2207

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

13888

Females

4421

F18-39

4421

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

9287

Females

2040

F18-39

2040

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

9495

Females

2260

F18-39

2260

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

8310

Females

1802

F18-39

1802

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7022

Females

1383

F18-39

1383

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

7002

Females

1425

F18-39

1425

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2story building
+22ft-21ft

Overall

7772

Females

1732

F18-39

1732

Passing Analysis

Category:
Passed
1752*
Passed By
1436
Net Change
+315
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9774
5K → 10K253378-125#9774#9899
10K → 15K241117+124#9899#9775
15K → 20K184*111+73#9775#9702
20K → Half1647-31#9702#9733
Half → 25K18257+125#9733#9608
25K → 30K126*255-129#9608#9737
30K → 20M10176+25#9737#9712
20M → 21M24275-252#9712#9964
21M → 35K6517+48#9964#9916
35K → 23M10443+61#9916#9855
23M → 24M11612+104#9855#9751
24M → 40K153*7+146#9751#9605
40K → 25.2M789+69#9605#9536
25.2M → Finish10932+77#9536#9459
TOTALS1752*1436+315

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

Passing Charts

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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