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BOSTON MARATHON 2023

Jenifer Serrano

Bib: 18084•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 39%
Gender (Female)
#0 / 11423
Top 20%
Division (F18-39)
#0 / 4884
Top 36%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:48
Rank: #11119
Start → 5K
23:48 | 7:40/mi
10K· 6.21 mi
47:25
Rank: #11192 (-73)
5K → 10K
23:37 | 7:36/mi
15K· 9.32 mi
1:11:33
Rank: #11585 (-393)
10K → 15K
24:08 | 7:46/mi
20K· 12.43 mi
1:36:04
Rank: #11796 (-211)
15K → 20K
24:31 | 7:53/mi
Half· 13.11 mi
1:41:25
Rank: #11859 (-63)
20K → Half
5:21 | 7:50/mi
25K· 15.53 mi
2:00:55
Rank: #12047 (-188)
Half → 25K
19:30 | 8:03/mi
30K· 18.64 mi
2:25:39
Rank: #11729 (+318)
25K → 30K
24:44 | 7:58/mi
20M
2:36:33
Rank: #11603 (+126)
30K → 20M
10:54 | 8:01/mi
21M
2:45:08
Rank: #11546 (+57)
20M → 21M
8:35 | 8:35/mi
35K· 21.75 mi
2:50:53
Rank: #11462 (+84)
21M → 35K
5:45 | 7:41/mi
23M
3:00:48
Rank: #11307 (+155)
35K → 23M
9:55 | 7:55/mi
24M
3:08:03
Rank: #11028 (+279)
23M → 24M
7:15 | 7:15/mi
40K· 24.85 mi
3:14:20
Rank: #10786 (+242)
24M → 40K
6:17 | 7:21/mi
25.2M
3:17:04
Rank: #10687 (+99)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
3:24:19
Rank: #10456 (+231)
25.2M → Finish
7:15 | 7:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:25
Pace7:44 /mi
2nd Half
Distance13.11 mi
Time1:42:54
Pace7:51 /mi
📊Positive Split: 1.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:4623:487:4023:48
7:40
-
10K
6.21 mi11:38:2347:257:3823:37
7:36
-0:04
15K
9.32 mi12:02:311:11:337:4124:08
7:46
+0:10
20K
12.43 mi12:27:021:36:047:4424:31
7:53
+0:07
Half
13.11 mi12:32:231:41:257:445:21
7:50
-0:03
25K
15.53 mi12:51:532:00:557:4719:30
8:03
+0:13
30K
18.64 mi13:16:372:25:397:4924:44
7:58
-0:05
20M
20.00 mi13:27:312:36:337:5010:54
8:01
+0:03
21M
21.00 mi13:36:062:45:087:528:35
8:35
+0:34
35K
21.75 mi13:41:512:50:537:515:45
7:41
-0:54
23M
23.00 mi13:51:463:00:487:529:55
7:55
+0:14
24M
24.00 mi13:59:013:08:037:507:15
7:15
-0:40
40K
24.85 mi14:05:183:14:207:496:17
7:21
+0:06
25.2M
25.20 mi14:08:023:17:047:492:44
7:56
+0:35
Finish
26.22 mi14:15:173:24:197:487:15
7:07
-0:49

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

7:07 /mi

Average Pace

7:48 /mi

Slowest Pace

8:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

44:24

22% of race

Time at Steady Pace

2:00:56

59% of race

Time at Slower Pace

38:59

19% of race

Average Pace: 7:48 /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 mi11:14:4623:487:4023:48
7:40
#11119
10K
6.21 mi11:38:2347:257:3823:37
7:36
#11192
15K
9.32 mi12:02:311:11:337:4124:08
7:46
#11585
20K
12.43 mi12:27:021:36:047:4424:31
7:53
#11796
Half
13.11 mi12:32:231:41:257:445:21
7:50
#11859
25K
15.53 mi12:51:532:00:557:4719:30
8:03
#12047
30K
18.64 mi13:16:372:25:397:4924:44
7:58
#11729
20M
20.00 mi13:27:312:36:337:5010:54
8:01
#11603
21M
21.00 mi13:36:062:45:087:528:35
8:35
#11546
35K
21.75 mi13:41:512:50:537:515:45
7:41
#11462
23M
23.00 mi13:51:463:00:487:529:55
7:55
#11307
24M
24.00 mi13:59:013:08:037:507:15
7:15
#11028
40K
24.85 mi14:05:183:14:207:496:17
7:21
#10786
25.2M
25.20 mi14:08:023:17:047:492:44
7:56
#10687
Finish
26.22 mi14:15:173:24:197:487:15
7:07
#10456
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi111192392239212450(Top 47%)3155(Top 28%)3155(Top 65%)
10K6.21 mi3.10 mi11192-732434-422434-4211355(Top 43%)2523(Top 22%)2523(Top 52%)
15K9.32 mi3.11 mi11585-3932651-2172651-21712450(Top 47%)3155(Top 28%)3155(Top 65%)
20K12.43 mi3.11 mi11796-2112797-1462797-14612545(Top 47%)3276(Top 29%)3276(Top 67%)
Half13.11 mi0.68 mi11859-632832-352832-3513098(Top 49%)3532(Top 31%)3532(Top 72%)
25K15.53 mi2.42 mi12047-1882966-1342966-13413089(Top 49%)3673(Top 32%)3673(Top 75%)
30K18.64 mi3.11 mi11729+3182822+1442822+14410589(Top 40%)2441(Top 21%)2441(Top 50%)
20M20.00 mi1.36 mi11603+1262769+532769+5310442(Top 39%)2450(Top 21%)2450(Top 50%)
21M21.00 mi1.00 mi11546+572757+122757+1210977(Top 41%)2850(Top 25%)2850(Top 58%)
35K21.75 mi0.75 mi11462+842725+322725+329873(Top 37%)2298(Top 20%)2298(Top 47%)
23M23.00 mi1.25 mi11307+1552662+632662+639240(Top 35%)2143(Top 19%)2143(Top 44%)
24M24.00 mi1.00 mi11028+2792541+1212541+1216099(Top 23%)947(Top 8%)947(Top 19%)
40K24.85 mi0.85 mi10786+2422441+1002441+1005809(Top 22%)926(Top 8%)926(Top 19%)
25.2M25.20 mi0.35 mi10687+992409+322409+326190(Top 23%)1140(Top 10%)1140(Top 23%)
Finish26.22 mi1.02 mi10456+2312324+852324+855935(Top 22%)1054(Top 9%)1054(Top 22%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21stories
+97ft-345ft

Overall

12450

Females

3155

F18-39

3155

5K→10K

3.1 - 6.2 mi

Top 43%
×5stories
+79ft-138ft

Overall

11355

Females

2523

F18-39

2523

10K→15K

6.2 - 9.3 mi

Top 47%
×3stories
+67ft-78ft

Overall

12450

Females

3155

F18-39

3155

15K→20K

9.3 - 12.4 mi

Top 47%
×5stories
+106ft-86ft

Overall

12545

Females

3276

F18-39

3276

20K→Half

12.4 - 13.1 mi

Top 49%
×2stories
+19ft-37ft

Overall

13098

Females

3532

F18-39

3532

Half→25K

13.1 - 15.5 mi

Top 49%
×4stories
+66ft-88ft

Overall

13089

Females

3673

F18-39

3673

25K→30K

15.5 - 18.6 mi

Top 40%
×9stories
+181ft-148ft

Overall

10589

Females

2441

F18-39

2441

30K→20M

18.6 - 20.0 mi

Top 39%
×5stories
+64ft-50ft

Overall

10442

Females

2450

F18-39

2450

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

10977

Females

2850

F18-39

2850

21M→35K

21.0 - 21.8 mi

Top 37%
×7stories
+17ft-86ft

Overall

9873

Females

2298

F18-39

2298

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9240

Females

2143

F18-39

2143

23M→24M

23.0 - 24.0 mi

Top 23%
×6stories
+12ft-82ft

Overall

6099

Females

947

F18-39

947

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5809

Females

926

F18-39

926

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6190

Females

1140

F18-39

1140

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2stories
+22ft-21ft

Overall

5935

Females

1054

F18-39

1054

Passing Analysis

Category:
Athletes Passed
2293
Passed By
1630
Net Change
+663
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11119
5K → 10K257330-73#11119#11192
10K → 15K77470-393#11192#11585
15K → 20K94305-211#11585#11796
20K → Half1275-63#11796#11859
Half → 25K73261-188#11859#12047
25K → 30K36143+318#12047#11729
30K → 20M15832+126#11729#11603
20M → 21M11659+57#11603#11546
21M → 35K9410+84#11546#11462
35K → 23M19136+155#11462#11307
23M → 24M2812+279#11307#11028
24M → 40K2431+242#11028#10786
40K → 25.2M1012+99#10786#10687
25.2M → Finish2354+231#10687#10456
TOTALS22931630+663
📊

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