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BOSTON MARATHON 2023

Yishan Lee

Bib: 31115•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
10:27/mi
32:28
↑ 97↓ 3451.5%
10K· 6.21 mi
10:35/mi
1:05:21
↑ 79↓ 1380.4%
15K· 9.32 mi
10:49/mi
1:38:58
↑ 67↓ 78
20K· 12.43 mi
11:21/mi
2:14:14
↑ 106↓ 860.1%
Half· 13.11 mi
10:16/mi
2:21:14
↑ 19↓ 370.5%
25K· 15.53 mi
11:27/mi
2:49:00
↑ 66↓ 880.2%
30K· 18.64 mi
11:46/mi
3:25:34
↑ 181↓ 1480.2%
20M
13:02/mi
3:43:17
↑ 64↓ 500.2%
21M
13:18/mi
3:56:35
↑ 106↓ 241.6%
35K· 21.75 mi
11:22/mi
4:05:05
↑ 17↓ 861.7%
23M
12:24/mi
4:20:37
↑ 23↓ 630.6%
24M
11:57/mi
4:32:34
↓ 821.3%
40K· 24.85 mi
12:20/mi
4:43:07
↓ 200.3%
25.2M
14:01/mi
4:47:57
↑ 13↓ 160.2%
Finish· 26.22 mi
10:47/mi
4:58:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:21:14
Pace10:46 /mi
2nd Half
Distance13.11 mi
Time2:37:42
Pace12:02 /mi
📊Positive Split: 11.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:1632:2810:2732:28
10:27
-
10K
6.21 mi12:25:091:05:2110:3132:53
10:35
+0:08
15K
9.32 mi12:58:461:38:5810:3733:37
10:49
+0:14
20K
12.43 mi13:34:022:14:1410:4835:16
11:21
+0:32
Half
13.11 mi13:41:022:21:1410:467:00
10:16
-1:05
25K
15.53 mi14:08:482:49:0010:5327:46
11:27
+1:11
30K
18.64 mi14:45:223:25:3411:0236:34
11:46
+0:19
20M
20.00 mi15:03:053:43:1711:1017:43
13:02
+1:16
21M
21.00 mi15:16:233:56:3511:1613:18
13:18
+0:16
35K
21.75 mi15:24:534:05:0511:168:30
11:22
-1:56
23M
23.00 mi15:40:254:20:3711:2015:32
12:24
+1:02
24M
24.00 mi15:52:224:32:3411:2111:57
11:57
-0:27
40K
24.85 mi16:02:554:43:0711:2310:33
12:20
+0:23
25.2M
25.20 mi16:07:454:47:5711:264:50
14:01
+1:41
Finish
26.22 mi16:18:444:58:5611:2510:59
10:47
-3:14

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

10:16 /mi

Average Pace

11:25 /mi

Slowest Pace

14:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:57

39% of race

Time at Steady Pace

2:00:03

40% of race

Time at Slower Pace

1:01:56

21% of race

Average Pace: 11:24 /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 mi11:52:1632:2810:2732:28
10:27
#24585
10K
6.21 mi12:25:091:05:2110:3132:53
10:35
#24744
15K
9.32 mi12:58:461:38:5810:3733:37
10:49
#24840
20K
12.43 mi13:34:022:14:1410:4835:16
11:21
#24924
Half
13.11 mi13:41:022:21:1410:467:00
10:16
#24881
25K
15.53 mi14:08:482:49:0010:5327:46
11:27
#24818
30K
18.64 mi14:45:223:25:3411:0236:34
11:46
#24719
20M
20.00 mi15:03:053:43:1711:1017:43
13:02
#24795
21M
21.00 mi15:16:233:56:3511:1613:18
13:18
#24780
35K
21.75 mi15:24:534:05:0511:168:30
11:22
#24755
23M
23.00 mi15:40:254:20:3711:2015:32
12:24
#24759
24M
24.00 mi15:52:224:32:3411:2111:57
11:57
#24755
40K
24.85 mi16:02:554:43:0711:2310:33
12:20
#24755
25.2M
25.20 mi16:07:454:47:5711:264:50
14:01
#24774
Finish
26.22 mi16:18:444:58:5611:2510:59
10:47
#24763
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi24585102101021024962(Top 94%)10439(Top 91%)10439(Top 556%)
10K6.21 mi3.10 mi24744-15910292-8210292-8224828(Top 93%)10342(Top 91%)10342(Top 551%)
15K9.32 mi3.11 mi24840-9610358-6610358-6624962(Top 94%)10439(Top 91%)10439(Top 556%)
20K12.43 mi3.11 mi24924-8410413-5510413-5525062(Top 94%)10515(Top 92%)10515(Top 560%)
Half13.11 mi0.68 mi24881+4310392+2110392+2123801(Top 89%)9808(Top 86%)9808(Top 522%)
25K15.53 mi2.42 mi24818+6310364+2810364+2824598(Top 92%)10286(Top 90%)10286(Top 548%)
30K18.64 mi3.11 mi24719+9910326+3810326+3824222(Top 91%)10138(Top 89%)10138(Top 540%)
20M20.00 mi1.36 mi24795-7610383-5710383-5725215(Top 95%)10709(Top 94%)10709(Top 570%)
21M21.00 mi1.00 mi24780+1510377+610377+624395(Top 92%)10294(Top 90%)10294(Top 548%)
35K21.75 mi0.75 mi24755+2510369+810369+823919(Top 90%)10093(Top 88%)10093(Top 537%)
23M23.00 mi1.25 mi24759-410383-1410383-1424488(Top 92%)10384(Top 91%)10384(Top 553%)
24M24.00 mi1.00 mi24755+410388-510388-524460(Top 92%)10411(Top 91%)10411(Top 554%)
40K24.85 mi0.85 mi2475510392-410392-424275(Top 91%)10322(Top 90%)10322(Top 550%)
25.2M25.20 mi0.35 mi24774-1910407-1510407-1525030(Top 94%)10714(Top 94%)10714(Top 571%)
Finish26.22 mi1.02 mi24763+1110409-210409-223585(Top 89%)9951(Top 87%)9951(Top 530%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21story building
+97ft-345ft

Overall

24962

Females

10439

F40-44

10439

5K→10K

3.1 - 6.2 mi

Top 93%
×5story building
+79ft-138ft

Overall

24828

Females

10342

F40-44

10342

10K→15K

6.2 - 9.3 mi

Top 94%
×3story building
+67ft-78ft

Overall

24962

Females

10439

F40-44

10439

15K→20K

9.3 - 12.4 mi

Top 94%
×5story building
+106ft-86ft

Overall

25062

Females

10515

F40-44

10515

20K→Half

12.4 - 13.1 mi

Top 89%
×2story building
+19ft-37ft

Overall

23801

Females

9808

F40-44

9808

Half→25K

13.1 - 15.5 mi

Top 92%
×4story building
+66ft-88ft

Overall

24598

Females

10286

F40-44

10286

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

24222

Females

10138

F40-44

10138

30K→20M

18.6 - 20.0 mi

Top 95%
×5story building
+64ft-50ft

Overall

25215

Females

10709

F40-44

10709

20M→21M

20.0 - 21.0 mi

Top 92%
×8story building
+106ft-24ft

Overall

24395

Females

10294

F40-44

10294

21M→35K

21.0 - 21.8 mi

Top 90%
×7story building
+17ft-86ft

Overall

23919

Females

10093

F40-44

10093

35K→23M

21.8 - 23.0 mi

Top 92%
×5story building
+23ft-63ft

Overall

24488

Females

10384

F40-44

10384

23M→24M

23.0 - 24.0 mi

Top 92%
×6story building
+12ft-82ft

Overall

24460

Females

10411

F40-44

10411

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

24275

Females

10322

F40-44

10322

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

25030

Females

10714

F40-44

10714

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2story building
+22ft-21ft

Overall

23585

Females

9951

F40-44

9951

Passing Analysis

Category:
Athletes Passed
794
Passed By
972
Net Change
-178
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24585
5K → 10K131290-159#24585#24744
10K → 15K73169-96#24744#24840
15K → 20K73157-84#24840#24924
20K → Half441+43#24924#24881
Half → 25K10239+63#24881#24818
25K → 30K14445+99#24818#24719
30K → 20M25101-76#24719#24795
20M → 21M3924+15#24795#24780
21M → 35K338+25#24780#24755
35K → 23M3741-4#24755#24759
23M → 24M2521+4#24759#24755
24M → 40K30300#24755#24755
40K → 25.2M625-19#24755#24774
25.2M → Finish3221+11#24774#24763
TOTALS794972-178
📊

Passing Visuals

Category:
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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