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BOSTON MARATHON 2023

Lai Kam Amy Yan

Bib: 20682•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 39%
Masters (Masters Women)
#0 / 6539
Top 26%
Division (F50-54)
#0 / 1207
Top 17%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:03
Rank: #14454
Start → 5K
25:03 | 8:04/mi
10K· 6.21 mi
49:46
Rank: #14455 (-1)
5K → 10K
24:43 | 7:57/mi
15K· 9.32 mi
1:14:34
Rank: #14359 (+96)
10K → 15K
24:48 | 7:59/mi
20K· 12.43 mi
1:39:37
Rank: #14223 (+136)
15K → 20K
25:03 | 8:04/mi
Half· 13.11 mi
1:44:59
Rank: #14183 (+40)
20K → Half
5:22 | 7:52/mi
25K· 15.53 mi
2:04:47
Rank: #14131 (+52)
Half → 25K
19:48 | 8:10/mi
30K· 18.64 mi
2:31:21
Rank: #14241 (-110)
25K → 30K
26:34 | 8:33/mi
20M
2:43:07
Rank: #14258 (-17)
30K → 20M
11:46 | 8:40/mi
21M
2:52:24
Rank: #14279 (-21)
20M → 21M
9:17 | 9:17/mi
35K· 21.75 mi
2:58:44
Rank: #14297 (-18)
21M → 35K
6:20 | 8:28/mi
23M
3:09:40
Rank: #14307 (-10)
35K → 23M
10:56 | 8:44/mi
24M
3:18:09
Rank: #14296 (+11)
23M → 24M
8:29 | 8:29/mi
40K· 24.85 mi
3:25:32
Rank: #14270 (+26)
24M → 40K
7:23 | 8:38/mi
25.2M
3:28:41
Rank: #14242 (+28)
40K → 25.2M
3:09 | 9:08/mi
Finish· 26.22 mi
3:37:12
Rank: #14241 (+1)
25.2M → Finish
8:31 | 8:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:59
Pace8:00 /mi
2nd Half
Distance13.11 mi
Time1:52:13
Pace8:34 /mi
📊Positive Split: 6.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:4525:038:0425:03
8:04
-
10K
6.21 mi11:42:2849:468:0124:43
7:57
-0:07
15K
9.32 mi12:07:161:14:348:0024:48
7:59
+0:02
20K
12.43 mi12:32:191:39:378:0125:03
8:04
+0:05
Half
13.11 mi12:37:411:44:598:005:22
7:52
-0:12
25K
15.53 mi12:57:292:04:478:0219:48
8:10
+0:18
30K
18.64 mi13:24:032:31:218:0726:34
8:33
+0:23
20M
20.00 mi13:35:492:43:078:0911:46
8:40
+0:07
21M
21.00 mi13:45:062:52:248:139:17
9:17
+0:37
35K
21.75 mi13:51:262:58:448:136:20
8:28
-0:49
23M
23.00 mi14:02:223:09:408:1510:56
8:44
+0:16
24M
24.00 mi14:10:513:18:098:158:29
8:29
-0:15
40K
24.85 mi14:18:143:25:328:167:23
8:38
+0:09
25.2M
25.20 mi14:21:233:28:418:173:09
9:08
+0:30
Finish
26.22 mi14:29:543:37:128:178:31
8:21
-0:47

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

7:52 /mi

Average Pace

8:17 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:02:04

84% of race

Time at Steady Pace

25:51

12% of race

Time at Slower Pace

9:17

4% of race

Average Pace: 8:17 /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 mi11:17:4525:038:0425:03
8:04
#14454
10K
6.21 mi11:42:2849:468:0124:43
7:57
#14455
15K
9.32 mi12:07:161:14:348:0024:48
7:59
#14359
20K
12.43 mi12:32:191:39:378:0125:03
8:04
#14223
Half
13.11 mi12:37:411:44:598:005:22
7:52
#14183
25K
15.53 mi12:57:292:04:478:0219:48
8:10
#14131
30K
18.64 mi13:24:032:31:218:0726:34
8:33
#14241
20M
20.00 mi13:35:492:43:078:0911:46
8:40
#14258
21M
21.00 mi13:45:062:52:248:139:17
9:17
#14279
35K
21.75 mi13:51:262:58:448:136:20
8:28
#14297
23M
23.00 mi14:02:223:09:408:1510:56
8:44
#14307
24M
24.00 mi14:10:513:18:098:158:29
8:29
#14296
40K
24.85 mi14:18:143:25:328:167:23
8:38
#14270
25.2M
25.20 mi14:21:233:28:418:173:09
9:08
#14242
Finish
26.22 mi14:29:543:37:128:178:31
8:21
#14241
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi144544300430014250(Top 54%)4230(Top 37%)4230(Top 350%)
10K6.21 mi3.10 mi14455-14312-124312-1214464(Top 54%)4342(Top 38%)4342(Top 360%)
15K9.32 mi3.11 mi14359+964268+444268+4414250(Top 54%)4230(Top 37%)4230(Top 350%)
20K12.43 mi3.11 mi14223+1364216+524216+5213964(Top 52%)4091(Top 36%)4091(Top 339%)
Half13.11 mi0.68 mi14183+404189+274189+2713408(Top 50%)3757(Top 33%)3757(Top 311%)
25K15.53 mi2.42 mi14131+524187+24187+214015(Top 53%)4235(Top 37%)4235(Top 351%)
30K18.64 mi3.11 mi14241-1104291-1044291-10414621(Top 55%)4702(Top 41%)4702(Top 390%)
20M20.00 mi1.36 mi14258-174332-414332-4114630(Top 55%)4782(Top 42%)4782(Top 396%)
21M21.00 mi1.00 mi14279-214367-354367-3514909(Top 56%)4998(Top 44%)4998(Top 414%)
35K21.75 mi0.75 mi14297-184388-214388-2115122(Top 57%)5173(Top 45%)5173(Top 429%)
23M23.00 mi1.25 mi14307-104418-304418-3014600(Top 55%)4953(Top 43%)4953(Top 410%)
24M24.00 mi1.00 mi14296+114427-94427-914397(Top 54%)4891(Top 43%)4891(Top 405%)
40K24.85 mi0.85 mi14270+264435-84435-814181(Top 53%)4843(Top 42%)4843(Top 401%)
25.2M25.20 mi0.35 mi14242+284432+34432+313331(Top 50%)4402(Top 39%)4402(Top 365%)
Finish26.22 mi1.02 mi14241+14453-214453-2114476(Top 54%)4984(Top 44%)4984(Top 413%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21stories
+97ft-345ft

Overall

14250

Females

4230

F50-54

4230

5K→10K

3.1 - 6.2 mi

Top 54%
×5stories
+79ft-138ft

Overall

14464

Females

4342

F50-54

4342

10K→15K

6.2 - 9.3 mi

Top 54%
×3stories
+67ft-78ft

Overall

14250

Females

4230

F50-54

4230

15K→20K

9.3 - 12.4 mi

Top 52%
×5stories
+106ft-86ft

Overall

13964

Females

4091

F50-54

4091

20K→Half

12.4 - 13.1 mi

Top 50%
×2stories
+19ft-37ft

Overall

13408

Females

3757

F50-54

3757

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

14015

Females

4235

F50-54

4235

25K→30K

15.5 - 18.6 mi

Top 55%
×9stories
+181ft-148ft

Overall

14621

Females

4702

F50-54

4702

30K→20M

18.6 - 20.0 mi

Top 55%
×5stories
+64ft-50ft

Overall

14630

Females

4782

F50-54

4782

20M→21M

20.0 - 21.0 mi

Top 56%
×8stories
+106ft-24ft

Overall

14909

Females

4998

F50-54

4998

21M→35K

21.0 - 21.8 mi

Top 57%
×7stories
+17ft-86ft

Overall

15122

Females

5173

F50-54

5173

35K→23M

21.8 - 23.0 mi

Top 55%
×5stories
+23ft-63ft

Overall

14600

Females

4953

F50-54

4953

23M→24M

23.0 - 24.0 mi

Top 54%
×6stories
+12ft-82ft

Overall

14397

Females

4891

F50-54

4891

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

14181

Females

4843

F50-54

4843

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

13331

Females

4402

F50-54

4402

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2stories
+22ft-21ft

Overall

14476

Females

4984

F50-54

4984

Passing Analysis

Category:
Athletes Passed
1675
Passed By
1462
Net Change
+213
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14454
5K → 10K291292-1#14454#14455
10K → 15K235139+96#14455#14359
15K → 20K237101+136#14359#14223
20K → Half5010+40#14223#14183
Half → 25K174122+52#14183#14131
25K → 30K161271-110#14131#14241
30K → 20M7693-17#14241#14258
20M → 21M6889-21#14258#14279
21M → 35K4260-18#14279#14297
35K → 23M8494-10#14297#14307
23M → 24M7968+11#14307#14296
24M → 40K6842+26#14296#14270
40K → 25.2M4113+28#14270#14242
25.2M → Finish6968+1#14242#14241
TOTALS16751462+213
📊

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