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BOSTON MARATHON 2023

Cliff Li

Bib: 7378•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 26%
Gender (Male)
#0 / 15176
Top 40%
Masters (Masters Men)
#0 / 9891
Top 27%
Division (M50-54)
#0 / 2052
Top 21%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:45
Rank: #8244
Start → 5K
22:45 | 7:19/mi
10K· 6.21 mi
45:35
Rank: #8685 (-441)
5K → 10K
22:50 | 7:21/mi
15K· 9.32 mi
1:08:22
Rank: #8722 (-37)
10K → 15K
22:47 | 7:20/mi
20K· 12.43 mi
1:30:57
Rank: #8377 (+345)
15K → 20K
22:35 | 7:16/mi
Half· 13.11 mi
1:35:42
Rank: #8252 (+125)
20K → Half
4:45 | 6:58/mi
25K· 15.53 mi
1:53:10
Rank: #7959 (+293)
Half → 25K
17:28 | 7:12/mi
30K· 18.64 mi
2:16:19
Rank: #7725 (+234)
25K → 30K
23:09 | 7:27/mi
20M
2:26:31
Rank: #7627 (+98)
30K → 20M
10:12 | 7:30/mi
21M
2:34:30
Rank: #7575 (+52)
20M → 21M
7:59 | 7:59/mi
35K· 21.75 mi
2:40:01
Rank: #7549 (+26)
21M → 35K
5:31 | 7:22/mi
23M
2:49:17
Rank: #7405 (+144)
35K → 23M
9:16 | 7:24/mi
24M
2:56:19
Rank: #7264 (+141)
23M → 24M
7:02 | 7:02/mi
40K· 24.85 mi
3:02:38
Rank: #7181 (+83)
24M → 40K
6:19 | 7:23/mi
25.2M
3:05:28
Rank: #7168 (+13)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:12:36
Rank: #7034 (+134)
25.2M → Finish
7:08 | 7:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:42
Pace7:18 /mi
2nd Half
Distance13.11 mi
Time1:36:54
Pace7:24 /mi
📊Positive Split: 1.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1622:457:1922:45
7:19
-
10K
6.21 mi11:16:0645:357:2022:50
7:21
+0:02
15K
9.32 mi11:38:531:08:227:2022:47
7:20
-0:01
20K
12.43 mi12:01:281:30:577:1922:35
7:16
-0:04
Half
13.11 mi12:06:131:35:427:184:45
6:58
-0:18
25K
15.53 mi12:23:411:53:107:1717:28
7:12
+0:14
30K
18.64 mi12:46:502:16:197:1923:09
7:27
+0:15
20M
20.00 mi12:57:022:26:317:2010:12
7:30
+0:03
21M
21.00 mi13:05:012:34:307:217:59
7:59
+0:29
35K
21.75 mi13:10:322:40:017:215:31
7:22
-0:37
23M
23.00 mi13:19:482:49:177:229:16
7:24
+0:02
24M
24.00 mi13:26:502:56:197:217:02
7:02
-0:22
40K
24.85 mi13:33:093:02:387:216:19
7:23
+0:21
25.2M
25.20 mi13:35:593:05:287:222:50
8:13
+0:50
Finish
26.22 mi13:43:073:12:367:217:08
7:00
-1:13

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

6:58 /mi

Average Pace

7:21 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:01:47

94% of race

Time at Steady Pace

10:49

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:21 /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 mi10:53:1622:457:1922:45
7:19
#8244
10K
6.21 mi11:16:0645:357:2022:50
7:21
#8685
15K
9.32 mi11:38:531:08:227:2022:47
7:20
#8722
20K
12.43 mi12:01:281:30:577:1922:35
7:16
#8377
Half
13.11 mi12:06:131:35:427:184:45
6:58
#8252
25K
15.53 mi12:23:411:53:107:1717:28
7:12
#7959
30K
18.64 mi12:46:502:16:197:1923:09
7:27
#7725
20M
20.00 mi12:57:022:26:317:2010:12
7:30
#7627
21M
21.00 mi13:05:012:34:307:217:59
7:59
#7575
35K
21.75 mi13:10:322:40:017:215:31
7:22
#7549
23M
23.00 mi13:19:482:49:177:229:16
7:24
#7405
24M
24.00 mi13:26:502:56:197:217:02
7:02
#7264
40K
24.85 mi13:33:093:02:387:216:19
7:23
#7181
25.2M
25.20 mi13:35:593:05:287:222:50
8:13
#7168
Finish
26.22 mi13:43:073:12:367:217:08
7:00
#7034
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi8244712871288811(Top 33%)7425(Top 49%)7425(Top 362%)
10K6.21 mi3.10 mi8685-4417388-2607388-2609208(Top 35%)7694(Top 51%)7694(Top 375%)
15K9.32 mi3.11 mi8722-377394-67394-68811(Top 33%)7425(Top 49%)7425(Top 362%)
20K12.43 mi3.11 mi8377+3457180+2147180+2147550(Top 28%)6594(Top 43%)6594(Top 321%)
Half13.11 mi0.68 mi8252+1257098+827098+826352(Top 24%)5762(Top 38%)5762(Top 281%)
25K15.53 mi2.42 mi7959+2936889+2096889+2096695(Top 25%)5928(Top 39%)5928(Top 289%)
30K18.64 mi3.11 mi7725+2346702+1876702+1876891(Top 26%)5993(Top 39%)5993(Top 292%)
20M20.00 mi1.36 mi7627+986617+856617+856803(Top 26%)5843(Top 39%)5843(Top 285%)
21M21.00 mi1.00 mi7575+526566+516566+517223(Top 27%)6001(Top 40%)6001(Top 292%)
35K21.75 mi0.75 mi7549+266538+286538+287598(Top 29%)6240(Top 41%)6240(Top 304%)
23M23.00 mi1.25 mi7405+1446419+1196419+1195874(Top 22%)5099(Top 34%)5099(Top 248%)
24M24.00 mi1.00 mi7264+1416312+1076312+1074846(Top 18%)4315(Top 28%)4315(Top 210%)
40K24.85 mi0.85 mi7181+836243+696243+695993(Top 23%)5017(Top 33%)5017(Top 244%)
25.2M25.20 mi0.35 mi7168+136224+196224+197716(Top 29%)5992(Top 39%)5992(Top 292%)
Finish26.22 mi1.02 mi7034+1346105+1196105+1195216(Top 20%)4424(Top 29%)4424(Top 216%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

8811

Males

7425

M50-54

7425

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9208

Males

7694

M50-54

7694

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

8811

Males

7425

M50-54

7425

15K→20K

9.3 - 12.4 mi

Top 28%
×5stories
+106ft-86ft

Overall

7550

Males

6594

M50-54

6594

20K→Half

12.4 - 13.1 mi

Top 24%
×2stories
+19ft-37ft

Overall

6352

Males

5762

M50-54

5762

Half→25K

13.1 - 15.5 mi

Top 25%
×4stories
+66ft-88ft

Overall

6695

Males

5928

M50-54

5928

25K→30K

15.5 - 18.6 mi

Top 26%
×9stories
+181ft-148ft

Overall

6891

Males

5993

M50-54

5993

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

6803

Males

5843

M50-54

5843

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7223

Males

6001

M50-54

6001

21M→35K

21.0 - 21.8 mi

Top 29%
×7stories
+17ft-86ft

Overall

7598

Males

6240

M50-54

6240

35K→23M

21.8 - 23.0 mi

Top 22%
×5stories
+23ft-63ft

Overall

5874

Males

5099

M50-54

5099

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

4846

Males

4315

M50-54

4315

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

5993

Males

5017

M50-54

5017

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7716

Males

5992

M50-54

5992

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5216

Males

4424

M50-54

4424

Passing Analysis

Category:
Athletes Passed
2116
Passed By
906
Net Change
+1210
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8244
5K → 10K99540-441#8244#8685
10K → 15K133170-37#8685#8722
15K → 20K35712+345#8722#8377
20K → Half1250+125#8377#8252
Half → 25K2996+293#8252#7959
25K → 30K27541+234#7959#7725
30K → 20M11921+98#7725#7627
20M → 21M8331+52#7627#7575
21M → 35K5226+26#7575#7549
35K → 23M15915+144#7549#7405
23M → 24M1432+141#7405#7264
24M → 40K9714+83#7264#7181
40K → 25.2M3118+13#7181#7168
25.2M → Finish14410+134#7168#7034
TOTALS2116906+1210
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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