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BOSTON MARATHON 2023

Lihong Liu

Bib: 22403•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
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
8:42/mi
27:02
↑ 97↓ 3451.5%
10K· 6.21 mi
8:42/mi
54:03
↑ 79↓ 1380.4%
15K· 9.32 mi
8:43/mi
1:21:09
↑ 67↓ 78
20K· 12.43 mi
8:48/mi
1:48:29
↑ 106↓ 860.1%
Half· 13.11 mi
8:45/mi
1:54:27
↑ 19↓ 370.5%
25K· 15.53 mi
8:55/mi
2:16:03
↑ 66↓ 880.2%
30K· 18.64 mi
9:21/mi
2:45:05
↑ 181↓ 1480.2%
20M
9:43/mi
2:58:17
↑ 64↓ 500.2%
21M
10:03/mi
3:08:20
↑ 106↓ 241.6%
35K· 21.75 mi
9:33/mi
3:15:29
↑ 17↓ 861.7%
23M
10:57/mi
3:29:11
↑ 23↓ 630.6%
24M
9:48/mi
3:38:59
↓ 821.3%
40K· 24.85 mi
10:07/mi
3:47:38
↓ 200.3%
25.2M
11:33/mi
3:51:37
↑ 13↓ 160.2%
Finish· 26.22 mi
10:31/mi
4:02:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:27
Pace8:44 /mi
2nd Half
Distance13.11 mi
Time2:07:53
Pace9:45 /mi
📊Positive Split: 11.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:2927:028:4227:02
8:42
-
10K
6.21 mi11:47:3054:038:4227:01
8:42
0:00
15K
9.32 mi12:14:361:21:098:4227:06
8:43
+0:01
20K
12.43 mi12:41:561:48:298:4427:20
8:48
+0:05
Half
13.11 mi12:47:541:54:278:445:58
8:45
-0:03
25K
15.53 mi13:09:302:16:038:4521:36
8:55
+0:10
30K
18.64 mi13:38:322:45:058:5129:02
9:21
+0:26
20M
20.00 mi13:51:442:58:178:5513:12
9:43
+0:22
21M
21.00 mi14:01:473:08:208:5810:03
10:03
+0:20
35K
21.75 mi14:08:563:15:298:597:09
9:33
-0:30
23M
23.00 mi14:22:383:29:119:0613:42
10:57
+1:24
24M
24.00 mi14:32:263:38:599:079:48
9:48
-1:09
40K
24.85 mi14:41:053:47:389:108:39
10:07
+0:19
25.2M
25.20 mi14:45:043:51:379:113:59
11:33
+1:26
Finish
26.22 mi14:55:474:02:209:1510:43
10:31
-1:02

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

8:42 /mi

Average Pace

9:15 /mi

Slowest Pace

11:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16:03

56% of race

Time at Steady Pace

59:11

24% of race

Time at Slower Pace

47:06

19% of race

Average Pace: 9:15 /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 mi11:20:2927:028:4227:02
8:42
#18910
10K
6.21 mi11:47:3054:038:4227:01
8:42
#19104
15K
9.32 mi12:14:361:21:098:4227:06
8:43
#19083
20K
12.43 mi12:41:561:48:298:4427:20
8:48
#18955
Half
13.11 mi12:47:541:54:278:445:58
8:45
#18976
25K
15.53 mi13:09:302:16:038:4521:36
8:55
#18883
30K
18.64 mi13:38:322:45:058:5129:02
9:21
#18862
20M
20.00 mi13:51:442:58:178:5513:12
9:43
#18948
21M
21.00 mi14:01:473:08:208:5810:03
10:03
#18906
35K
21.75 mi14:08:563:15:298:597:09
9:33
#18959
23M
23.00 mi14:22:383:29:119:0613:42
10:57
#19273
24M
24.00 mi14:32:263:38:599:079:48
9:48
#19341
40K
24.85 mi14:41:053:47:389:108:39
10:07
#19422
25.2M
25.20 mi14:45:043:51:379:113:59
11:33
#19476
Finish
26.22 mi14:55:474:02:209:1510:43
10:31
#19661
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi189107147714719105(Top 72%)7165(Top 63%)7165(Top 594%)
10K6.21 mi3.10 mi19104-1947218-717218-7119421(Top 73%)7331(Top 64%)7331(Top 607%)
15K9.32 mi3.11 mi19083+217183+357183+3519105(Top 72%)7165(Top 63%)7165(Top 594%)
20K12.43 mi3.11 mi18955+1287095+887095+8818675(Top 70%)6901(Top 60%)6901(Top 572%)
Half13.11 mi0.68 mi18976-217109-147109-1419258(Top 72%)7249(Top 63%)7249(Top 601%)
25K15.53 mi2.42 mi18883+937053+567053+5618524(Top 70%)6867(Top 60%)6867(Top 569%)
30K18.64 mi3.11 mi18862+217059-67059-618812(Top 71%)7092(Top 62%)7092(Top 588%)
20M20.00 mi1.36 mi18948-867130-717130-7119600(Top 74%)7636(Top 67%)7636(Top 633%)
21M21.00 mi1.00 mi18906+427112+187112+1818225(Top 68%)6890(Top 60%)6890(Top 571%)
35K21.75 mi0.75 mi18959-537154-427154-4220036(Top 75%)7951(Top 70%)7951(Top 659%)
23M23.00 mi1.25 mi19273-3147335-1817335-18122232(Top 84%)9181(Top 80%)9181(Top 761%)
24M24.00 mi1.00 mi19341-687377-427377-4220234(Top 76%)8108(Top 71%)8108(Top 672%)
40K24.85 mi0.85 mi19422-817445-687445-6820288(Top 76%)8209(Top 72%)8209(Top 680%)
25.2M25.20 mi0.35 mi19476-547481-367481-3621673(Top 81%)8940(Top 78%)8940(Top 741%)
Finish26.22 mi1.02 mi19661-1857594-1137594-11323032(Top 87%)9658(Top 85%)9658(Top 800%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21story building
+97ft-345ft

Overall

19105

Females

7165

F50-54

7165

5K→10K

3.1 - 6.2 mi

Top 73%
×5story building
+79ft-138ft

Overall

19421

Females

7331

F50-54

7331

10K→15K

6.2 - 9.3 mi

Top 72%
×3story building
+67ft-78ft

Overall

19105

Females

7165

F50-54

7165

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

18675

Females

6901

F50-54

6901

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

19258

Females

7249

F50-54

7249

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

18524

Females

6867

F50-54

6867

25K→30K

15.5 - 18.6 mi

Top 71%
×9story building
+181ft-148ft

Overall

18812

Females

7092

F50-54

7092

30K→20M

18.6 - 20.0 mi

Top 74%
×5story building
+64ft-50ft

Overall

19600

Females

7636

F50-54

7636

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

18225

Females

6890

F50-54

6890

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

20036

Females

7951

F50-54

7951

35K→23M

21.8 - 23.0 mi

Top 84%
×5story building
+23ft-63ft

Overall

22232

Females

9181

F50-54

9181

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

20234

Females

8108

F50-54

8108

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20288

Females

8209

F50-54

8209

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

21673

Females

8940

F50-54

8940

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

23032

Females

9658

F50-54

9658

Passing Analysis

Category:
Athletes Passed
1317
Passed By
2068
Net Change
-751
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18910
5K → 10K257451-194#18910#19104
10K → 15K185164+21#19104#19083
15K → 20K21789+128#19083#18955
20K → Half1940-21#18955#18976
Half → 25K16875+93#18976#18883
25K → 30K177156+21#18883#18862
30K → 20M52138-86#18862#18948
20M → 21M10664+42#18948#18906
21M → 35K2578-53#18906#18959
35K → 23M23337-314#18959#19273
23M → 24M44112-68#19273#19341
24M → 40K28109-81#19341#19422
40K → 25.2M761-54#19422#19476
25.2M → Finish9194-185#19476#19661
TOTALS13172068-751
📊

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