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BOSTON MARATHON 2023

Katherine Serrano

Bib: 18134•F

IL

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 41%
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:09
Rank: #12131
Start → 5K
7:46/mi
24:09 split
10K· 6.21 mi
48:33
Rank: #12833 (-702)
5K → 10K
7:51/mi
24:24 split
15K· 9.32 mi
1:13:11
Rank: #13162 (-329)
10K → 15K
7:56/mi
24:38 split
20K· 12.43 mi
1:38:24
Rank: #13461 (-299)
15K → 20K
8:07/mi
25:13 split
Half· 13.11 mi
1:43:54
Rank: #13528 (-67)
20K → Half
8:04/mi
5:30 split
25K· 15.53 mi
2:04:35
Rank: #14022 (-494)
Half → 25K
8:32/mi
20:41 split
30K· 18.64 mi
2:31:45
Rank: #14393 (-371)
25K → 30K
8:45/mi
27:10 split
20M
2:44:03
Rank: #14576 (-183)
30K → 20M
9:03/mi
12:18 split
21M
2:53:20
Rank: #14581 (-5)
20M → 21M
9:17/mi
9:17 split
35K· 21.75 mi
2:59:39
Rank: #14590 (-9)
21M → 35K
8:27/mi
6:19 split
23M
3:10:45
Rank: #14618 (-28)
35K → 23M
8:52/mi
11:06 split
24M
3:19:15
Rank: #14589 (+29)
23M → 24M
8:30/mi
8:30 split
40K· 24.85 mi
3:26:42
Rank: #14568 (+21)
24M → 40K
8:43/mi
7:27 split
25.2M
3:29:54
Rank: #14557 (+11)
40K → 25.2M
9:17/mi
3:12 split
Finish· 26.22 mi
3:38:35
Rank: #14584 (-27)
25.2M → Finish
8:31/mi
8:41 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:54
Pace7:56 /mi
2nd Half
Distance13.11 mi
Time1:54:41
Pace8:45 /mi
📊Positive Split: 10.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:0224:097:4624:09
7:46
-
10K
6.21 mi11:39:2648:337:4924:24
7:51
+0:05
15K
9.32 mi12:04:041:13:117:5124:38
7:56
+0:05
20K
12.43 mi12:29:171:38:247:5525:13
8:07
+0:11
Half
13.11 mi12:34:471:43:547:565:30
8:04
-0:03
25K
15.53 mi12:55:282:04:358:0120:41
8:32
+0:28
30K
18.64 mi13:22:382:31:458:0827:10
8:45
+0:13
20M
20.00 mi13:34:562:44:038:1212:18
9:03
+0:18
21M
21.00 mi13:44:132:53:208:159:17
9:17
+0:14
35K
21.75 mi13:50:322:59:398:166:19
8:27
-0:50
23M
23.00 mi14:01:383:10:458:1811:06
8:52
+0:25
24M
24.00 mi14:10:083:19:158:188:30
8:30
-0:22
40K
24.85 mi14:17:353:26:428:197:27
8:43
+0:13
25.2M
25.20 mi14:20:473:29:548:203:12
9:17
+0:34
Finish
26.22 mi14:29:283:38:358:218:41
8:31
-0:46

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

7:46 /mi

Average Pace

8:21 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:28:05

68% of race

Time at Steady Pace

58:01

27% of race

Time at Slower Pace

12:29

6% of race

Average Pace: 8:20 /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 mi11:15:0224:097:4624:09
7:46
#12131
10K
6.21 mi11:39:2648:337:4924:24
7:51
#12833
15K
9.32 mi12:04:041:13:117:5124:38
7:56
#13162
20K
12.43 mi12:29:171:38:247:5525:13
8:07
#13461
Half
13.11 mi12:34:471:43:547:565:30
8:04
#13528
25K
15.53 mi12:55:282:04:358:0120:41
8:32
#14022
30K
18.64 mi13:22:382:31:458:0827:10
8:45
#14393
20M
20.00 mi13:34:562:44:038:1212:18
9:03
#14576
21M
21.00 mi13:44:132:53:208:159:17
9:17
#14581
35K
21.75 mi13:50:322:59:398:166:19
8:27
#14590
23M
23.00 mi14:01:383:10:458:1811:06
8:52
#14618
24M
24.00 mi14:10:083:19:158:188:30
8:30
#14589
40K
24.85 mi14:17:353:26:428:197:27
8:43
#14568
25.2M
25.20 mi14:20:473:29:548:203:12
9:17
#14557
Finish
26.22 mi14:29:283:38:358:218:41
8:31
#14584
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi121312944294413827(Top 52%)3986(Top 35%)3986(Top 82%)
10K6.21 mi3.10 mi12833-7023339-3953339-39513609(Top 51%)3798(Top 33%)3798(Top 78%)
15K9.32 mi3.11 mi13162-3293563-2243563-22413827(Top 52%)3986(Top 35%)3986(Top 82%)
20K12.43 mi3.11 mi13461-2993759-1963759-19614344(Top 54%)4315(Top 38%)4315(Top 88%)
Half13.11 mi0.68 mi13528-673800-413800-4114922(Top 56%)4642(Top 41%)4642(Top 95%)
25K15.53 mi2.42 mi14022-4944124-3244124-32416395(Top 62%)5663(Top 50%)5663(Top 116%)
30K18.64 mi3.11 mi14393-3714393-2694393-26915747(Top 59%)5349(Top 47%)5349(Top 110%)
20M20.00 mi1.36 mi14576-1834515-1224515-12216808(Top 63%)6033(Top 53%)6033(Top 124%)
21M21.00 mi1.00 mi14581-54537-224537-2214911(Top 56%)5000(Top 44%)5000(Top 102%)
35K21.75 mi0.75 mi14590-94556-194556-1914993(Top 56%)5098(Top 45%)5098(Top 104%)
23M23.00 mi1.25 mi14618-284596-404596-4015367(Top 58%)5376(Top 47%)5376(Top 110%)
24M24.00 mi1.00 mi14589+294607-114607-1114487(Top 54%)4944(Top 43%)4944(Top 101%)
40K24.85 mi0.85 mi14568+214619-124619-1214610(Top 55%)5084(Top 45%)5084(Top 104%)
25.2M25.20 mi0.35 mi14557+114625-64625-614139(Top 53%)4823(Top 42%)4823(Top 99%)
Finish26.22 mi1.02 mi14584-274649-244649-2415558(Top 58%)5563(Top 49%)5563(Top 114%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21stories
+97ft-345ft

Overall

13827

Females

3986

F18-39

3986

5K→10K

3.1 - 6.2 mi

Top 51%
×5stories
+79ft-138ft

Overall

13609

Females

3798

F18-39

3798

10K→15K

6.2 - 9.3 mi

Top 52%
×3stories
+67ft-78ft

Overall

13827

Females

3986

F18-39

3986

15K→20K

9.3 - 12.4 mi

Top 54%
×5stories
+106ft-86ft

Overall

14344

Females

4315

F18-39

4315

20K→Half

12.4 - 13.1 mi

Top 56%
×2stories
+19ft-37ft

Overall

14922

Females

4642

F18-39

4642

Half→25K

13.1 - 15.5 mi

Top 62%
×4stories
+66ft-88ft

Overall

16395

Females

5663

F18-39

5663

25K→30K

15.5 - 18.6 mi

Top 59%
×9stories
+181ft-148ft

Overall

15747

Females

5349

F18-39

5349

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

16808

Females

6033

F18-39

6033

20M→21M

20.0 - 21.0 mi

Top 56%
×8stories
+106ft-24ft

Overall

14911

Females

5000

F18-39

5000

21M→35K

21.0 - 21.8 mi

Top 56%
×7stories
+17ft-86ft

Overall

14993

Females

5098

F18-39

5098

35K→23M

21.8 - 23.0 mi

Top 58%
×5stories
+23ft-63ft

Overall

15367

Females

5376

F18-39

5376

23M→24M

23.0 - 24.0 mi

Top 54%
×6stories
+12ft-82ft

Overall

14487

Females

4944

F18-39

4944

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

14610

Females

5084

F18-39

5084

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

14139

Females

4823

F18-39

4823

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2stories
+22ft-21ft

Overall

15558

Females

5563

F18-39

5563

Passing Analysis

Category:
Athletes Passed
909
Passed By
3362
Net Change
-2453
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12131
5K → 10K87789-702#12131#12833
10K → 15K101430-329#12833#13162
15K → 20K104403-299#13162#13461
20K → Half1380-67#13461#13528
Half → 25K38532-494#13528#14022
25K → 30K91462-371#14022#14393
30K → 20M44227-183#14393#14576
20M → 21M8085-5#14576#14581
21M → 35K3948-9#14581#14590
35K → 23M7098-28#14590#14618
23M → 24M8657+29#14618#14589
24M → 40K6746+21#14589#14568
40K → 25.2M3625+11#14568#14557
25.2M → Finish5380-27#14557#14584
TOTALS9093362-2453
📊

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