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BOSTON MARATHON 2023

Ying Liu

Bib: 21711•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 45%
Masters (Masters Women)
#0 / 6539
Top 34%
Division (F50-54)
#0 / 1207
Top 25%
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
8:35/mi
26:41
↑ 97↓ 3451.5%
10K· 6.21 mi
8:18/mi
52:28
↑ 79↓ 1380.4%
15K· 9.32 mi
8:17/mi
1:18:12
↑ 67↓ 78
20K· 12.43 mi
8:26/mi
1:44:25
↑ 106↓ 860.1%
Half· 13.11 mi
8:20/mi
1:50:06
↑ 19↓ 370.5%
25K· 15.53 mi
8:24/mi
2:10:29
↑ 66↓ 880.2%
30K· 18.64 mi
8:37/mi
2:37:14
↑ 181↓ 1480.2%
20M
8:37/mi
2:48:57
↑ 64↓ 500.2%
21M
9:05/mi
2:58:02
↑ 106↓ 241.6%
35K· 21.75 mi
8:08/mi
3:04:07
↑ 17↓ 861.7%
23M
8:18/mi
3:14:30
↑ 23↓ 630.6%
24M
8:12/mi
3:22:42
↓ 821.3%
40K· 24.85 mi
8:26/mi
3:29:55
↓ 200.3%
25.2M
9:28/mi
3:33:11
↑ 13↓ 160.2%
Finish· 26.22 mi
8:37/mi
3:41:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:06
Pace8:24 /mi
2nd Half
Distance13.11 mi
Time1:51:52
Pace8:32 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:4926:418:3526:41
8:35
-
10K
6.21 mi11:45:3652:288:2725:47
8:18
-0:17
15K
9.32 mi12:11:201:18:128:2325:44
8:17
-0:01
20K
12.43 mi12:37:331:44:258:2426:13
8:26
+0:09
Half
13.11 mi12:43:141:50:068:245:41
8:20
-0:06
25K
15.53 mi13:03:372:10:298:2420:23
8:24
+0:04
30K
18.64 mi13:30:222:37:148:2626:45
8:37
+0:13
20M
20.00 mi13:42:052:48:578:2711:43
8:37
0:00
21M
21.00 mi13:51:102:58:028:299:05
9:05
+0:28
35K
21.75 mi13:57:153:04:078:286:05
8:08
-0:57
23M
23.00 mi14:07:383:14:308:2710:23
8:18
+0:10
24M
24.00 mi14:15:503:22:428:278:12
8:12
-0:06
40K
24.85 mi14:23:033:29:558:277:13
8:26
+0:14
25.2M
25.20 mi14:26:193:33:118:283:16
9:28
+1:02
Finish
26.22 mi14:35:063:41:588:288:47
8:37
-0:51

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

8:08 /mi

Average Pace

8:28 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:29:37

94% of race

Time at Steady Pace

12:21

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:28 /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 mi11:19:4926:418:3526:41
8:35
#18158
10K
6.21 mi11:45:3652:288:2725:47
8:18
#17498
15K
9.32 mi12:11:201:18:128:2325:44
8:17
#17135
20K
12.43 mi12:37:331:44:258:2426:13
8:26
#16964
Half
13.11 mi12:43:141:50:068:245:41
8:20
#16938
25K
15.53 mi13:03:372:10:298:2420:23
8:24
#16734
30K
18.64 mi13:30:222:37:148:2626:45
8:37
#16384
20M
20.00 mi13:42:052:48:578:2711:43
8:37
#16197
21M
21.00 mi13:51:102:58:028:299:05
9:05
#16044
35K
21.75 mi13:57:153:04:078:286:05
8:08
#15908
23M
23.00 mi14:07:383:14:308:2710:23
8:18
#15657
24M
24.00 mi14:15:503:22:428:278:12
8:12
#15524
40K
24.85 mi14:23:033:29:558:277:13
8:26
#15435
25.2M
25.20 mi14:26:193:33:118:283:16
9:28
#15411
Finish
26.22 mi14:35:063:41:588:288:47
8:37
#15444
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi181586653665316435(Top 62%)5554(Top 49%)5554(Top 460%)
10K6.21 mi3.10 mi17498+6606223+4306223+43016927(Top 64%)5827(Top 51%)5827(Top 483%)
15K9.32 mi3.11 mi17135+3635989+2345989+23416435(Top 62%)5554(Top 49%)5554(Top 460%)
20K12.43 mi3.11 mi16964+1715906+835906+8316478(Top 62%)5633(Top 49%)5633(Top 467%)
Half13.11 mi0.68 mi16938+265889+175889+1716685(Top 63%)5696(Top 50%)5696(Top 472%)
25K15.53 mi2.42 mi16734+2045789+1005789+10015639(Top 59%)5229(Top 46%)5229(Top 433%)
30K18.64 mi3.11 mi16384+3505615+1745615+17414986(Top 56%)4922(Top 43%)4922(Top 408%)
20M20.00 mi1.36 mi16197+1875517+985517+9814440(Top 54%)4674(Top 41%)4674(Top 387%)
21M21.00 mi1.00 mi16044+1535441+765441+7613920(Top 52%)4453(Top 39%)4453(Top 369%)
35K21.75 mi0.75 mi15908+1365374+675374+6713068(Top 49%)4054(Top 35%)4054(Top 336%)
23M23.00 mi1.25 mi15657+2515261+1135261+11311883(Top 45%)3461(Top 30%)3461(Top 287%)
24M24.00 mi1.00 mi15524+1335194+675194+6712654(Top 48%)3954(Top 35%)3954(Top 328%)
40K24.85 mi0.85 mi15435+895153+415153+4113017(Top 49%)4221(Top 37%)4221(Top 350%)
25.2M25.20 mi0.35 mi15411+245142+115142+1115110(Top 57%)5364(Top 47%)5364(Top 444%)
Finish26.22 mi1.02 mi15444-335174-325174-3216099(Top 60%)5871(Top 51%)5871(Top 486%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

16435

Females

5554

F50-54

5554

5K→10K

3.1 - 6.2 mi

Top 64%
×5story building
+79ft-138ft

Overall

16927

Females

5827

F50-54

5827

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

16435

Females

5554

F50-54

5554

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

16478

Females

5633

F50-54

5633

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

16685

Females

5696

F50-54

5696

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

15639

Females

5229

F50-54

5229

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

14986

Females

4922

F50-54

4922

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

14440

Females

4674

F50-54

4674

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

13920

Females

4453

F50-54

4453

21M→35K

21.0 - 21.8 mi

Top 49%
×7story building
+17ft-86ft

Overall

13068

Females

4054

F50-54

4054

35K→23M

21.8 - 23.0 mi

Top 45%
×5story building
+23ft-63ft

Overall

11883

Females

3461

F50-54

3461

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

12654

Females

3954

F50-54

3954

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

13017

Females

4221

F50-54

4221

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

15110

Females

5364

F50-54

5364

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

16099

Females

5871

F50-54

5871

Passing Analysis

Category:
Athletes Passed
3241
Passed By
527
Net Change
+2714
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18158
5K → 10K783123+660#18158#17498
10K → 15K42057+363#17498#17135
15K → 20K27099+171#17135#16964
20K → Half4317+26#16964#16938
Half → 25K22925+204#16938#16734
25K → 30K38838+350#16734#16384
30K → 20M1925+187#16384#16197
20M → 21M17017+153#16197#16044
21M → 35K1393+136#16044#15908
35K → 23M2554+251#15908#15657
23M → 24M14613+133#15657#15524
24M → 40K10415+89#15524#15435
40K → 25.2M4319+24#15435#15411
25.2M → Finish5992-33#15411#15444
TOTALS3241527+2714
📊

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