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BOSTON MARATHON 2023

Coretta Lau

Bib: 27271•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
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
31:11
Rank: #23537
Start → 5K
31:11 | 10:02/mi
10K· 6.21 mi
1:01:35
Rank: #23412 (+125)
5K → 10K
30:24 | 9:47/mi
15K· 9.32 mi
1:35:10
Rank: #24033 (-621)
10K → 15K
33:35 | 10:49/mi
20K· 12.43 mi
2:09:29
Rank: #24268 (-235)
15K → 20K
34:19 | 11:03/mi
Half· 13.11 mi
2:16:26
Rank: #24218 (+50)
20K → Half
6:57 | 10:11/mi
25K· 15.53 mi
2:43:11
Rank: #24175 (+43)
Half → 25K
26:45 | 11:02/mi
30K· 18.64 mi
3:20:54
Rank: #24305 (-130)
25K → 30K
37:43 | 12:08/mi
20M
3:36:41
Rank: #24257 (+48)
30K → 20M
15:47 | 11:37/mi
21M
3:49:37
Rank: #24238 (+19)
20M → 21M
12:56 | 12:56/mi
35K· 21.75 mi
3:57:34
Rank: #24199 (+39)
21M → 35K
7:57 | 10:38/mi
23M
4:13:25
Rank: #24262 (-63)
35K → 23M
15:51 | 12:40/mi
24M
4:24:51
Rank: #24241 (+21)
23M → 24M
11:26 | 11:26/mi
40K· 24.85 mi
4:34:41
Rank: #24210 (+31)
24M → 40K
9:50 | 11:30/mi
25.2M
4:38:45
Rank: #24168 (+42)
40K → 25.2M
4:04 | 11:48/mi
Finish· 26.22 mi
4:49:49
Rank: #24167 (+1)
25.2M → Finish
11:04 | 10:52/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:16:26
Pace10:24 /mi
2nd Half
Distance13.11 mi
Time2:33:23
Pace11:42 /mi
📊Positive Split: 12.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:3331:1110:0231:11
10:02
-
10K
6.21 mi12:18:571:01:359:5530:24
9:47
-0:15
15K
9.32 mi12:52:321:35:1010:1333:35
10:49
+1:02
20K
12.43 mi13:26:512:09:2910:2534:19
11:03
+0:14
Half
13.11 mi13:33:482:16:2610:246:57
10:11
-0:52
25K
15.53 mi14:00:332:43:1110:3026:45
11:02
+0:51
30K
18.64 mi14:38:163:20:5410:4737:43
12:08
+1:06
20M
20.00 mi14:54:033:36:4110:5015:47
11:37
-0:31
21M
21.00 mi15:06:593:49:3710:5612:56
12:56
+1:19
35K
21.75 mi15:14:563:57:3410:557:57
10:38
-2:18
23M
23.00 mi15:30:474:13:2511:0115:51
12:40
+2:02
24M
24.00 mi15:42:134:24:5111:0211:26
11:26
-1:14
40K
24.85 mi15:52:034:34:4111:039:50
11:30
+0:04
25.2M
25.20 mi15:56:074:38:4511:044:04
11:48
+0:18
Finish
26.22 mi16:07:114:49:4911:0411:04
10:52
-0:56

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

9:47 /mi

Average Pace

11:04 /mi

Slowest Pace

12:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:08:32

24% of race

Time at Steady Pace

2:05:06

43% of race

Time at Slower Pace

1:36:11

33% of race

Average Pace: 11:03 /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 mi11:48:3331:1110:0231:11
10:02
#23537
10K
6.21 mi12:18:571:01:359:5530:24
9:47
#23412
15K
9.32 mi12:52:321:35:1010:1333:35
10:49
#24033
20K
12.43 mi13:26:512:09:2910:2534:19
11:03
#24268
Half
13.11 mi13:33:482:16:2610:246:57
10:11
#24218
25K
15.53 mi14:00:332:43:1110:3026:45
11:02
#24175
30K
18.64 mi14:38:163:20:5410:4737:43
12:08
#24305
20M
20.00 mi14:54:033:36:4110:5015:47
11:37
#24257
21M
21.00 mi15:06:593:49:3710:5612:56
12:56
#24238
35K
21.75 mi15:14:563:57:3410:557:57
10:38
#24199
23M
23.00 mi15:30:474:13:2511:0115:51
12:40
#24262
24M
24.00 mi15:42:134:24:5111:0211:26
11:26
#24241
40K
24.85 mi15:52:034:34:4111:039:50
11:30
#24210
25.2M
25.20 mi15:56:074:38:4511:044:04
11:48
#24168
Finish
26.22 mi16:07:114:49:4911:0411:04
10:52
#24167
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi235379663966324946(Top 94%)10430(Top 91%)10430(Top 214%)
10K6.21 mi3.10 mi23412+1259579+849579+8423247(Top 87%)9477(Top 83%)9477(Top 194%)
15K9.32 mi3.11 mi24033-6219909-3309909-33024946(Top 94%)10430(Top 91%)10430(Top 214%)
20K12.43 mi3.11 mi24268-23510044-13510044-13524684(Top 93%)10299(Top 90%)10299(Top 211%)
Half13.11 mi0.68 mi24218+5010017+2710017+2723667(Top 89%)9723(Top 85%)9723(Top 199%)
25K15.53 mi2.42 mi24175+4310002+1510002+1524034(Top 90%)9971(Top 87%)9971(Top 204%)
30K18.64 mi3.11 mi24305-13010100-9810100-9824646(Top 93%)10368(Top 91%)10368(Top 212%)
20M20.00 mi1.36 mi24257+4810083+1710083+1723697(Top 89%)9899(Top 87%)9899(Top 203%)
21M21.00 mi1.00 mi24238+1910080+310080+324010(Top 90%)10092(Top 88%)10092(Top 207%)
35K21.75 mi0.75 mi24199+3910066+1410066+1422651(Top 85%)9397(Top 82%)9397(Top 192%)
23M23.00 mi1.25 mi24262-6310107-4110107-4124757(Top 93%)10513(Top 92%)10513(Top 215%)
24M24.00 mi1.00 mi24241+2110102+510102+523783(Top 89%)10048(Top 88%)10048(Top 206%)
40K24.85 mi0.85 mi24210+3110092+1010092+1023215(Top 87%)9778(Top 86%)9778(Top 200%)
25.2M25.20 mi0.35 mi24168+4210074+1810074+1822173(Top 83%)9232(Top 81%)9232(Top 189%)
Finish26.22 mi1.02 mi24167+110077-310077-323722(Top 89%)10019(Top 88%)10019(Top 205%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21stories
+97ft-345ft

Overall

24946

Females

10430

F18-39

10430

5K→10K

3.1 - 6.2 mi

Top 87%
×5stories
+79ft-138ft

Overall

23247

Females

9477

F18-39

9477

10K→15K

6.2 - 9.3 mi

Top 94%
×3stories
+67ft-78ft

Overall

24946

Females

10430

F18-39

10430

15K→20K

9.3 - 12.4 mi

Top 93%
×5stories
+106ft-86ft

Overall

24684

Females

10299

F18-39

10299

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

23667

Females

9723

F18-39

9723

Half→25K

13.1 - 15.5 mi

Top 90%
×4stories
+66ft-88ft

Overall

24034

Females

9971

F18-39

9971

25K→30K

15.5 - 18.6 mi

Top 93%
×9stories
+181ft-148ft

Overall

24646

Females

10368

F18-39

10368

30K→20M

18.6 - 20.0 mi

Top 89%
×5stories
+64ft-50ft

Overall

23697

Females

9899

F18-39

9899

20M→21M

20.0 - 21.0 mi

Top 90%
×8stories
+106ft-24ft

Overall

24010

Females

10092

F18-39

10092

21M→35K

21.0 - 21.8 mi

Top 85%
×7stories
+17ft-86ft

Overall

22651

Females

9397

F18-39

9397

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

24757

Females

10513

F18-39

10513

23M→24M

23.0 - 24.0 mi

Top 89%
×6stories
+12ft-82ft

Overall

23783

Females

10048

F18-39

10048

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

23215

Females

9778

F18-39

9778

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

22173

Females

9232

F18-39

9232

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2stories
+22ft-21ft

Overall

23722

Females

10019

F18-39

10019

Passing Analysis

Category:
Athletes Passed
911
Passed By
1541
Net Change
-630
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23537
5K → 10K282157+125#23537#23412
10K → 15K8629-621#23412#24033
15K → 20K50285-235#24033#24268
20K → Half566+50#24268#24218
Half → 25K11875+43#24218#24175
25K → 30K65195-130#24175#24305
30K → 20M7426+48#24305#24257
20M → 21M5233+19#24257#24238
21M → 35K456+39#24238#24199
35K → 23M1376-63#24199#24262
23M → 24M3817+21#24262#24241
24M → 40K4312+31#24241#24210
40K → 25.2M442+42#24210#24168
25.2M → Finish2322+1#24168#24167
TOTALS9111541-630
📊

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