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BOSTON MARATHON 2023

Meifang Liu

Bib: 18696•F

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 40%
Gender (Female)
#0 / 11423
Top 21%
Masters (Masters Women)
#0 / 6539
Top 9%
Division (F45-49)
#0 / 1817
Top 9%
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
8:10/mi
25:21
↑ 97↓ 3451.5%
10K· 6.21 mi
7:38/mi
49:03
↑ 79↓ 1380.4%
15K· 9.32 mi
7:42/mi
1:12:58
↑ 67↓ 78
20K· 12.43 mi
7:47/mi
1:37:08
↑ 106↓ 860.1%
Half· 13.11 mi
7:34/mi
1:42:18
↑ 19↓ 370.5%
25K· 15.53 mi
7:51/mi
2:01:20
↑ 66↓ 880.2%
30K· 18.64 mi
7:52/mi
2:25:46
↑ 181↓ 1480.2%
20M
8:00/mi
2:36:38
↑ 64↓ 500.2%
21M
8:34/mi
2:45:12
↑ 106↓ 241.6%
35K· 21.75 mi
7:59/mi
2:51:10
↑ 17↓ 861.7%
23M
7:42/mi
3:00:49
↑ 23↓ 630.6%
24M
7:26/mi
3:08:15
↓ 821.3%
40K· 24.85 mi
7:29/mi
3:14:39
↓ 200.3%
25.2M
8:19/mi
3:17:31
↑ 13↓ 160.2%
Finish· 26.22 mi
7:16/mi
3:24:55
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:42:18
Pace7:48 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:42:37
Pace7:50 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:4025:218:1025:21
8:10
-
10K
6.21 mi11:40:2249:037:5423:42
7:38
-0:32
15K
9.32 mi12:04:171:12:587:5023:55
7:42
+0:04
20K
12.43 mi12:28:271:37:087:4924:10
7:47
+0:05
Half
13.11 mi12:33:371:42:187:485:10
7:34
-0:13
25K
15.53 mi12:52:392:01:207:4919:02
7:51
+0:17
30K
18.64 mi13:17:052:25:467:4924:26
7:52
+0:01
20M
20.00 mi13:27:572:36:387:5010:52
8:00
+0:08
21M
21.00 mi13:36:312:45:127:528:34
8:34
+0:34
35K
21.75 mi13:42:292:51:107:525:58
7:59
-0:35
23M
23.00 mi13:52:083:00:497:529:39
7:42
-0:17
24M
24.00 mi13:59:343:08:157:517:26
7:26
-0:16
40K
24.85 mi14:05:583:14:397:506:24
7:29
+0:03
25.2M
25.20 mi14:08:503:17:317:502:52
8:19
+0:50
Finish
26.22 mi14:16:143:24:557:497:24
7:16
-1:03

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

7:16 /mi

Average Pace

7:49 /mi

Slowest Pace

8:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:37:16

77% of race

Time at Steady Pace

47:39

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:49 /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 mi11:16:4025:218:1025:21
8:10
#15144
10K
6.21 mi11:40:2249:037:5423:42
7:38
#13537
15K
9.32 mi12:04:171:12:587:5023:55
7:42
#12959
20K
12.43 mi12:28:271:37:087:4924:10
7:47
#12534
Half
13.11 mi12:33:371:42:187:485:10
7:34
#12443
25K
15.53 mi12:52:392:01:207:4919:02
7:51
#12271
30K
18.64 mi13:17:052:25:467:4924:26
7:52
#11783
20M
20.00 mi13:27:572:36:387:5010:52
8:00
#11637
21M
21.00 mi13:36:312:45:127:528:34
8:34
#11572
35K
21.75 mi13:42:292:51:107:525:58
7:59
#11593
23M
23.00 mi13:52:083:00:497:529:39
7:42
#11310
24M
24.00 mi13:59:343:08:157:517:26
7:26
#11106
40K
24.85 mi14:05:583:14:397:506:24
7:29
#10887
25.2M
25.20 mi14:08:503:17:317:502:52
8:19
#10835
Finish
26.22 mi14:16:143:24:557:497:24
7:16
#10623
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi151444734473411837(Top 44%)2810(Top 25%)2810(Top 155%)
10K6.21 mi3.10 mi13537+16073759+9753759+97511593(Top 44%)2648(Top 23%)2648(Top 146%)
15K9.32 mi3.11 mi12959+5783434+3253434+32511837(Top 44%)2810(Top 25%)2810(Top 155%)
20K12.43 mi3.11 mi12534+4253216+2183216+21811559(Top 43%)2713(Top 24%)2713(Top 149%)
Half13.11 mi0.68 mi12443+913171+453171+4510877(Top 41%)2306(Top 20%)2306(Top 127%)
25K15.53 mi2.42 mi12271+1723098+733098+7311522(Top 43%)2777(Top 24%)2777(Top 153%)
30K18.64 mi3.11 mi11783+4882856+2422856+2429868(Top 37%)2101(Top 18%)2101(Top 116%)
20M20.00 mi1.36 mi11637+1462788+682788+6810256(Top 39%)2349(Top 21%)2349(Top 129%)
21M21.00 mi1.00 mi11572+652773+152773+1510887(Top 41%)2803(Top 25%)2803(Top 154%)
35K21.75 mi0.75 mi11593-212800-272800-2711943(Top 45%)3379(Top 30%)3379(Top 186%)
23M23.00 mi1.25 mi11310+2832664+1362664+1367808(Top 29%)1506(Top 13%)1506(Top 83%)
24M24.00 mi1.00 mi11106+2042579+852579+857309(Top 27%)1418(Top 12%)1418(Top 78%)
40K24.85 mi0.85 mi10887+2192498+812498+816686(Top 25%)1252(Top 11%)1252(Top 69%)
25.2M25.20 mi0.35 mi10835+522485+132485+138479(Top 32%)2030(Top 18%)2030(Top 112%)
Finish26.22 mi1.02 mi10623+2122400+852400+856888(Top 26%)1393(Top 12%)1393(Top 77%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

11837

Females

2810

F45-49

2810

5K→10K

3.1 - 6.2 mi

Top 44%
×5story building
+79ft-138ft

Overall

11593

Females

2648

F45-49

2648

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

11837

Females

2810

F45-49

2810

15K→20K

9.3 - 12.4 mi

Top 43%
×5story building
+106ft-86ft

Overall

11559

Females

2713

F45-49

2713

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

10877

Females

2306

F45-49

2306

Half→25K

13.1 - 15.5 mi

Top 43%
×4story building
+66ft-88ft

Overall

11522

Females

2777

F45-49

2777

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

9868

Females

2101

F45-49

2101

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

10256

Females

2349

F45-49

2349

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

10887

Females

2803

F45-49

2803

21M→35K

21.0 - 21.8 mi

Top 45%
×7story building
+17ft-86ft

Overall

11943

Females

3379

F45-49

3379

35K→23M

21.8 - 23.0 mi

Top 29%
×5story building
+23ft-63ft

Overall

7808

Females

1506

F45-49

1506

23M→24M

23.0 - 24.0 mi

Top 27%
×6story building
+12ft-82ft

Overall

7309

Females

1418

F45-49

1418

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6686

Females

1252

F45-49

1252

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8479

Females

2030

F45-49

2030

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2story building
+22ft-21ft

Overall

6888

Females

1393

F45-49

1393

Passing Analysis

Category:
Athletes Passed
4860
Passed By
339
Net Change
+4521
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15144
5K → 10K163023+1607#15144#13537
10K → 15K61335+578#13537#12959
15K → 20K46035+425#12959#12534
20K → Half954+91#12534#12443
Half → 25K21240+172#12443#12271
25K → 30K51123+488#12271#11783
30K → 20M16519+146#11783#11637
20M → 21M12156+65#11637#11572
21M → 35K4465-21#11572#11593
35K → 23M29512+283#11593#11310
23M → 24M2084+204#11310#11106
24M → 40K2212+219#11106#10887
40K → 25.2M6311+52#10887#10835
25.2M → Finish22210+212#10835#10623
TOTALS4860339+4521
📊

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