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BOSTON MARATHON 2023

Pei-Yu Lee

Bib: 21497•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:01
Rank: #18872
Start → 5K
27:01 | 8:42/mi
10K· 6.21 mi
53:37
Rank: #18683 (+189)
5K → 10K
26:36 | 8:34/mi
15K· 9.32 mi
1:19:58
Rank: #18365 (+318)
10K → 15K
26:21 | 8:29/mi
20K· 12.43 mi
1:46:42
Rank: #18126 (+239)
15K → 20K
26:44 | 8:36/mi
Half· 13.11 mi
1:52:34
Rank: #18126
20K → Half
5:52 | 8:36/mi
25K· 15.53 mi
2:16:12
Rank: #18935 (-809)
Half → 25K
23:38 | 9:45/mi
30K· 18.64 mi
2:45:01
Rank: #18847 (+88)
25K → 30K
28:49 | 9:17/mi
20M
2:57:17
Rank: #18699 (+148)
30K → 20M
12:16 | 9:02/mi
21M
3:07:28
Rank: #18685 (+14)
20M → 21M
10:11 | 10:11/mi
35K· 21.75 mi
3:14:36
Rank: #18741 (-56)
21M → 35K
7:08 | 9:32/mi
23M
3:26:12
Rank: #18645 (+96)
35K → 23M
11:36 | 9:16/mi
24M
3:35:18
Rank: #18602 (+43)
23M → 24M
9:06 | 9:06/mi
40K· 24.85 mi
3:43:16
Rank: #18565 (+37)
24M → 40K
7:58 | 9:19/mi
25.2M
3:47:03
Rank: #18623 (-58)
40K → 25.2M
3:47 | 10:58/mi
Finish· 26.22 mi
3:56:15
Rank: #18609 (+14)
25.2M → Finish
9:12 | 9:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:34
Pace8:35 /mi
2nd Half
Distance13.11 mi
Time2:03:41
Pace9:26 /mi
📊Positive Split: 9.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3927:018:4227:01
8:42
-
10K
6.21 mi11:46:1553:378:3826:36
8:34
-0:08
15K
9.32 mi12:12:361:19:588:3526:21
8:29
-0:05
20K
12.43 mi12:39:201:46:428:3526:44
8:36
+0:07
Half
13.11 mi12:45:121:52:348:355:52
8:36
0:00
25K
15.53 mi13:08:502:16:128:4623:38
9:45
+1:09
30K
18.64 mi13:37:392:45:018:5128:49
9:17
-0:28
20M
20.00 mi13:49:552:57:178:5212:16
9:02
-0:15
21M
21.00 mi14:00:063:07:288:5610:11
10:11
+1:09
35K
21.75 mi14:07:143:14:368:577:08
9:32
-0:39
23M
23.00 mi14:18:503:26:128:5811:36
9:16
-0:16
24M
24.00 mi14:27:563:35:188:589:06
9:06
-0:10
40K
24.85 mi14:35:543:43:168:597:58
9:19
+0:13
25.2M
25.20 mi14:39:413:47:039:013:47
10:58
+1:39
Finish
26.22 mi14:48:533:56:159:019:12
9:02
-1:56

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

8:29 /mi

Average Pace

9:01 /mi

Slowest Pace

10:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:34

48% of race

Time at Steady Pace

1:18:57

33% of race

Time at Slower Pace

44:44

19% of race

Average Pace: 9:01 /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 mi11:19:3927:018:4227:01
8:42
#18872
10K
6.21 mi11:46:1553:378:3826:36
8:34
#18683
15K
9.32 mi12:12:361:19:588:3526:21
8:29
#18365
20K
12.43 mi12:39:201:46:428:3526:44
8:36
#18126
Half
13.11 mi12:45:121:52:348:355:52
8:36
#18126
25K
15.53 mi13:08:502:16:128:4623:38
9:45
#18935
30K
18.64 mi13:37:392:45:018:5128:49
9:17
#18847
20M
20.00 mi13:49:552:57:178:5212:16
9:02
#18699
21M
21.00 mi14:00:063:07:288:5610:11
10:11
#18685
35K
21.75 mi14:07:143:14:368:577:08
9:32
#18741
23M
23.00 mi14:18:503:26:128:5811:36
9:16
#18645
24M
24.00 mi14:27:563:35:188:589:06
9:06
#18602
40K
24.85 mi14:35:543:43:168:597:58
9:19
#18565
25.2M
25.20 mi14:39:413:47:039:013:47
10:58
#18623
Finish
26.22 mi14:48:533:56:159:019:12
9:02
#18609
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi188727123712317699(Top 66%)6334(Top 55%)6334(Top 349%)
10K6.21 mi3.10 mi18683+1896935+1886935+18818648(Top 70%)6864(Top 60%)6864(Top 378%)
15K9.32 mi3.11 mi18365+3186728+2076728+20717699(Top 66%)6334(Top 55%)6334(Top 349%)
20K12.43 mi3.11 mi18126+2396588+1406588+14017536(Top 66%)6253(Top 55%)6253(Top 344%)
Half13.11 mi0.68 mi181266584+46584+418374(Top 69%)6709(Top 59%)6709(Top 369%)
25K15.53 mi2.42 mi18935-8097084-5007084-50021604(Top 81%)8616(Top 75%)8616(Top 474%)
30K18.64 mi3.11 mi18847+887054+307054+3018515(Top 70%)6927(Top 61%)6927(Top 381%)
20M20.00 mi1.36 mi18699+1486981+736981+7316722(Top 63%)5995(Top 52%)5995(Top 330%)
21M21.00 mi1.00 mi18685+146979+26979+218663(Top 70%)7142(Top 63%)7142(Top 393%)
35K21.75 mi0.75 mi18741-567022-437022-4319960(Top 75%)7904(Top 69%)7904(Top 435%)
23M23.00 mi1.25 mi18645+966981+416981+4117378(Top 65%)6494(Top 57%)6494(Top 357%)
24M24.00 mi1.00 mi18602+436965+166965+1617691(Top 66%)6742(Top 59%)6742(Top 371%)
40K24.85 mi0.85 mi18565+376959+66959+617630(Top 66%)6760(Top 59%)6760(Top 372%)
25.2M25.20 mi0.35 mi18623-586998-396998-3920404(Top 77%)8261(Top 72%)8261(Top 455%)
Finish26.22 mi1.02 mi18609+146997+16997+118133(Top 68%)6971(Top 61%)6971(Top 384%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

17699

Females

6334

F45-49

6334

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

18648

Females

6864

F45-49

6864

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

17699

Females

6334

F45-49

6334

15K→20K

9.3 - 12.4 mi

Top 66%
×5stories
+106ft-86ft

Overall

17536

Females

6253

F45-49

6253

20K→Half

12.4 - 13.1 mi

Top 69%
×2stories
+19ft-37ft

Overall

18374

Females

6709

F45-49

6709

Half→25K

13.1 - 15.5 mi

Top 81%
×4stories
+66ft-88ft

Overall

21604

Females

8616

F45-49

8616

25K→30K

15.5 - 18.6 mi

Top 70%
×9stories
+181ft-148ft

Overall

18515

Females

6927

F45-49

6927

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

16722

Females

5995

F45-49

5995

20M→21M

20.0 - 21.0 mi

Top 70%
×8stories
+106ft-24ft

Overall

18663

Females

7142

F45-49

7142

21M→35K

21.0 - 21.8 mi

Top 75%
×7stories
+17ft-86ft

Overall

19960

Females

7904

F45-49

7904

35K→23M

21.8 - 23.0 mi

Top 65%
×5stories
+23ft-63ft

Overall

17378

Females

6494

F45-49

6494

23M→24M

23.0 - 24.0 mi

Top 66%
×6stories
+12ft-82ft

Overall

17691

Females

6742

F45-49

6742

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17630

Females

6760

F45-49

6760

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

20404

Females

8261

F45-49

8261

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2stories
+22ft-21ft

Overall

18133

Females

6971

F45-49

6971

Passing Analysis

Category:
Athletes Passed
2026
Passed By
1763
Net Change
+263
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18872
5K → 10K468279+189#18872#18683
10K → 15K38062+318#18683#18365
15K → 20K29455+239#18365#18126
20K → Half24240#18126#18126
Half → 25K15824-809#18126#18935
25K → 30K205117+88#18935#18847
30K → 20M17022+148#18847#18699
20M → 21M9985+14#18699#18685
21M → 35K3187-56#18685#18741
35K → 23M12832+96#18741#18645
23M → 24M7633+43#18645#18602
24M → 40K6932+37#18602#18565
40K → 25.2M1068-58#18565#18623
25.2M → Finish5743+14#18623#18609
TOTALS20261763+263
📊

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