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BOSTON MARATHON 2023

Yang Liu

Bib: 21415•F

TX

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

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
9:06/mi
28:15
↑ 97↓ 3451.5%
10K· 6.21 mi
8:50/mi
55:41
↑ 79↓ 1380.4%
15K· 9.32 mi
8:50/mi
1:23:07
↑ 67↓ 78
20K· 12.43 mi
9:04/mi
1:51:17
↑ 106↓ 860.1%
Half· 13.11 mi
8:39/mi
1:57:11
↑ 19↓ 370.5%
25K· 15.53 mi
9:20/mi
2:19:49
↑ 66↓ 880.2%
30K· 18.64 mi
9:38/mi
2:49:45
↑ 181↓ 1480.2%
20M
10:01/mi
3:03:22
↑ 64↓ 500.2%
21M
11:03/mi
3:14:25
↑ 106↓ 241.6%
35K· 21.75 mi
9:21/mi
3:21:25
↑ 17↓ 861.7%
23M
10:17/mi
3:34:18
↑ 23↓ 630.6%
24M
9:44/mi
3:44:02
↓ 821.3%
40K· 24.85 mi
9:32/mi
3:52:11
↓ 200.3%
25.2M
10:26/mi
3:55:47
↑ 13↓ 160.2%
Finish· 26.22 mi
9:41/mi
4:05:39
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:11
Pace8:56 /mi
2nd Half
Distance13.11 mi
Time2:08:28
Pace9:48 /mi
📊Positive Split: 9.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:2928:159:0628:15
9:06
-
10K
6.21 mi11:49:5555:418:5827:26
8:50
-0:16
15K
9.32 mi12:17:211:23:078:5527:26
8:50
0:00
20K
12.43 mi12:45:311:51:178:5728:10
9:04
+0:14
Half
13.11 mi12:51:251:57:118:565:54
8:39
-0:25
25K
15.53 mi13:14:032:19:499:0022:38
9:20
+0:41
30K
18.64 mi13:43:592:49:459:0629:56
9:38
+0:18
20M
20.00 mi13:57:363:03:229:1013:37
10:01
+0:23
21M
21.00 mi14:08:393:14:259:1511:03
11:03
+1:02
35K
21.75 mi14:15:393:21:259:167:00
9:21
-1:42
23M
23.00 mi14:28:323:34:189:1912:53
10:17
+0:56
24M
24.00 mi14:38:163:44:029:209:44
9:44
-0:33
40K
24.85 mi14:46:253:52:119:208:09
9:32
-0:12
25.2M
25.20 mi14:50:013:55:479:213:36
10:26
+0:54
Finish
26.22 mi14:59:534:05:399:239:52
9:41
-0:45

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

8:39 /mi

Average Pace

9:23 /mi

Slowest Pace

11:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:11

48% of race

Time at Steady Pace

1:27:19

36% of race

Time at Slower Pace

41:09

17% of race

Average Pace: 9:22 /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 mi11:22:2928:159:0628:15
9:06
#20844
10K
6.21 mi11:49:5555:418:5827:26
8:50
#20476
15K
9.32 mi12:17:211:23:078:5527:26
8:50
#20205
20K
12.43 mi12:45:311:51:178:5728:10
9:04
#20135
Half
13.11 mi12:51:251:57:118:565:54
8:39
#20073
25K
15.53 mi13:14:032:19:499:0022:38
9:20
#20120
30K
18.64 mi13:43:592:49:459:0629:56
9:38
#20084
20M
20.00 mi13:57:363:03:229:1013:37
10:01
#20124
21M
21.00 mi14:08:393:14:259:1511:03
11:03
#20183
35K
21.75 mi14:15:393:21:259:167:00
9:21
#20144
23M
23.00 mi14:28:323:34:189:1912:53
10:17
#20192
24M
24.00 mi14:38:163:44:029:209:44
9:44
#20186
40K
24.85 mi14:46:253:52:119:208:09
9:32
#20124
25.2M
25.20 mi14:50:013:55:479:213:36
10:26
#20103
Finish
26.22 mi14:59:534:05:399:239:52
9:41
#20109
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi208448294829419682(Top 74%)7499(Top 66%)7499(Top 413%)
10K6.21 mi3.10 mi20476+3688017+2778017+27720090(Top 75%)7747(Top 68%)7747(Top 426%)
15K9.32 mi3.11 mi20205+2717850+1677850+16719682(Top 74%)7499(Top 66%)7499(Top 413%)
20K12.43 mi3.11 mi20135+707792+587792+5819996(Top 75%)7678(Top 67%)7678(Top 423%)
Half13.11 mi0.68 mi20073+627757+357757+3518697(Top 70%)6911(Top 61%)6911(Top 380%)
25K15.53 mi2.42 mi20120-477774-177774-1720312(Top 76%)7873(Top 69%)7873(Top 433%)
30K18.64 mi3.11 mi20084+367773+17773+119924(Top 75%)7722(Top 68%)7722(Top 425%)
20M20.00 mi1.36 mi20124-407817-447817-4420543(Top 77%)8158(Top 71%)8158(Top 449%)
21M21.00 mi1.00 mi20183-597855-387855-3820932(Top 79%)8419(Top 74%)8419(Top 463%)
35K21.75 mi0.75 mi20144+397842+137842+1319396(Top 73%)7604(Top 67%)7604(Top 418%)
23M23.00 mi1.25 mi20192-487876-347876-3420812(Top 78%)8412(Top 74%)8412(Top 463%)
24M24.00 mi1.00 mi20186+67885-97885-920018(Top 75%)7983(Top 70%)7983(Top 439%)
40K24.85 mi0.85 mi20124+627858+277858+2718466(Top 69%)7198(Top 63%)7198(Top 396%)
25.2M25.20 mi0.35 mi20103+217854+47854+418943(Top 71%)7484(Top 66%)7484(Top 412%)
Finish26.22 mi1.02 mi20109-67866-127866-1220748(Top 78%)8433(Top 74%)8433(Top 464%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

19682

Females

7499

F45-49

7499

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

20090

Females

7747

F45-49

7747

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

19682

Females

7499

F45-49

7499

15K→20K

9.3 - 12.4 mi

Top 75%
×5story building
+106ft-86ft

Overall

19996

Females

7678

F45-49

7678

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

18697

Females

6911

F45-49

6911

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

20312

Females

7873

F45-49

7873

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

19924

Females

7722

F45-49

7722

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

20543

Females

8158

F45-49

8158

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

20932

Females

8419

F45-49

8419

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

19396

Females

7604

F45-49

7604

35K→23M

21.8 - 23.0 mi

Top 78%
×5story building
+23ft-63ft

Overall

20812

Females

8412

F45-49

8412

23M→24M

23.0 - 24.0 mi

Top 75%
×6story building
+12ft-82ft

Overall

20018

Females

7983

F45-49

7983

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

18466

Females

7198

F45-49

7198

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

18943

Females

7484

F45-49

7484

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

20748

Females

8433

F45-49

8433

Passing Analysis

Category:
Athletes Passed
1876
Passed By
1141
Net Change
+735
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20844
5K → 10K547179+368#20844#20476
10K → 15K33665+271#20476#20205
15K → 20K196126+70#20205#20135
20K → Half697+62#20135#20073
Half → 25K115162-47#20073#20120
25K → 30K176140+36#20120#20084
30K → 20M74114-40#20084#20124
20M → 21M53112-59#20124#20183
21M → 35K5819+39#20183#20144
35K → 23M59107-48#20144#20192
23M → 24M5246+6#20192#20186
24M → 40K7614+62#20186#20124
40K → 25.2M3312+21#20124#20103
25.2M → Finish3238-6#20103#20109
TOTALS18761141+735
📊

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