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BOSTON MARATHON 2023

Lifeng Pu

Bib: 7278•M

MD

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 17%
Gender (Male)
#0 / 15176
Top 28%
Masters (Masters Men)
#0 / 9891
Top 14%
Division (M45-49)
#0 / 2252
Top 17%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:45
Rank: #6242
Start → 5K
21:45 | 7:00/mi
10K· 6.21 mi
42:42
Rank: #5601 (+641)
5K → 10K
20:57 | 6:45/mi
15K· 9.32 mi
1:03:24
Rank: #5018 (+583)
10K → 15K
20:42 | 6:40/mi
20K· 12.43 mi
1:24:22
Rank: #4726 (+292)
15K → 20K
20:58 | 6:45/mi
Half· 13.11 mi
1:28:57
Rank: #4705 (+21)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:45:37
Rank: #4687 (+18)
Half → 25K
16:40 | 6:52/mi
30K· 18.64 mi
2:07:28
Rank: #4651 (+36)
25K → 30K
21:51 | 7:02/mi
20M
2:17:27
Rank: #4778 (-127)
30K → 20M
9:59 | 7:21/mi
21M
2:24:48
Rank: #4696 (+82)
20M → 21M
7:21 | 7:21/mi
35K· 21.75 mi
2:29:59
Rank: #4693 (+3)
21M → 35K
5:11 | 6:56/mi
23M
2:39:02
Rank: #4687 (+6)
35K → 23M
9:03 | 7:14/mi
24M
2:46:15
Rank: #4723 (-36)
23M → 24M
7:13 | 7:13/mi
40K· 24.85 mi
2:52:24
Rank: #4696 (+27)
24M → 40K
6:09 | 7:12/mi
25.2M
2:55:06
Rank: #4685 (+11)
40K → 25.2M
2:42 | 7:50/mi
Finish· 26.22 mi
3:01:58
Rank: #4611 (+74)
25.2M → Finish
6:52 | 6:44/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:57
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:33:01
Pace7:06 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:4021:457:0021:45
7:00
-
10K
6.21 mi10:46:3742:426:5220:57
6:45
-0:15
15K
9.32 mi11:07:191:03:246:4820:42
6:40
-0:05
20K
12.43 mi11:28:171:24:226:4720:58
6:45
+0:05
Half
13.11 mi11:32:521:28:576:474:35
6:43
-0:02
25K
15.53 mi11:49:321:45:376:4816:40
6:52
+0:09
30K
18.64 mi12:11:232:07:286:5021:51
7:02
+0:10
20M
20.00 mi12:21:222:17:276:529:59
7:21
+0:19
21M
21.00 mi12:28:432:24:486:547:21
7:21
0:00
35K
21.75 mi12:33:542:29:596:545:11
6:56
-0:25
23M
23.00 mi12:42:572:39:026:559:03
7:14
+0:18
24M
24.00 mi12:50:102:46:156:567:13
7:13
-0:01
40K
24.85 mi12:56:192:52:246:566:09
7:12
-0:01
25.2M
25.20 mi12:59:012:55:066:572:42
7:50
+0:38
Finish
26.22 mi13:05:533:01:586:576:52
6:44
-1:06

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

6:40 /mi

Average Pace

6:57 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:41:56

89% of race

Time at Steady Pace

20:02

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:56 /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 mi10:25:4021:457:0021:45
7:00
#6242
10K
6.21 mi10:46:3742:426:5220:57
6:45
#5601
15K
9.32 mi11:07:191:03:246:4820:42
6:40
#5018
20K
12.43 mi11:28:171:24:226:4720:58
6:45
#4726
Half
13.11 mi11:32:521:28:576:474:35
6:43
#4705
25K
15.53 mi11:49:321:45:376:4816:40
6:52
#4687
30K
18.64 mi12:11:232:07:286:5021:51
7:02
#4651
20M
20.00 mi12:21:222:17:276:529:59
7:21
#4778
21M
21.00 mi12:28:432:24:486:547:21
7:21
#4696
35K
21.75 mi12:33:542:29:596:545:11
6:56
#4693
23M
23.00 mi12:42:572:39:026:559:03
7:14
#4687
24M
24.00 mi12:50:102:46:156:567:13
7:13
#4723
40K
24.85 mi12:56:192:52:246:566:09
7:12
#4696
25.2M
25.20 mi12:59:012:55:066:572:42
7:50
#4685
Finish
26.22 mi13:05:533:01:586:576:52
6:44
#4611
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi6242569356933791(Top 14%)3570(Top 24%)3570(Top 159%)
10K6.21 mi3.10 mi5601+6415159+5345159+5344758(Top 18%)4422(Top 29%)4422(Top 196%)
15K9.32 mi3.11 mi5018+5834660+4994660+4993791(Top 14%)3570(Top 24%)3570(Top 159%)
20K12.43 mi3.11 mi4726+2924410+2504410+2503968(Top 15%)3734(Top 25%)3734(Top 166%)
Half13.11 mi0.68 mi4705+214386+244386+244535(Top 17%)4227(Top 28%)4227(Top 188%)
25K15.53 mi2.42 mi4687+184366+204366+204761(Top 18%)4418(Top 29%)4418(Top 196%)
30K18.64 mi3.11 mi4651+364337+294337+294565(Top 17%)4227(Top 28%)4227(Top 188%)
20M20.00 mi1.36 mi4778-1274444-1074444-1075934(Top 22%)5234(Top 34%)5234(Top 232%)
21M21.00 mi1.00 mi4696+824375+694375+693832(Top 14%)3540(Top 23%)3540(Top 157%)
35K21.75 mi0.75 mi4693+34368+74368+74909(Top 18%)4415(Top 29%)4415(Top 196%)
23M23.00 mi1.25 mi4687+64358+104358+104927(Top 19%)4410(Top 29%)4410(Top 196%)
24M24.00 mi1.00 mi4723-364387-294387-295802(Top 22%)4968(Top 33%)4968(Top 221%)
40K24.85 mi0.85 mi4696+274355+324355+324829(Top 18%)4229(Top 28%)4229(Top 188%)
25.2M25.20 mi0.35 mi4685+114344+114344+115474(Top 21%)4573(Top 30%)4573(Top 203%)
Finish26.22 mi1.02 mi4611+744279+654279+653725(Top 14%)3317(Top 22%)3317(Top 147%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3791

Males

3570

M45-49

3570

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4758

Males

4422

M45-49

4422

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3791

Males

3570

M45-49

3570

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

3968

Males

3734

M45-49

3734

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4535

Males

4227

M45-49

4227

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

4761

Males

4418

M45-49

4418

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4565

Males

4227

M45-49

4227

30K→20M

18.6 - 20.0 mi

Top 22%
×5stories
+64ft-50ft

Overall

5934

Males

5234

M45-49

5234

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

3832

Males

3540

M45-49

3540

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

4909

Males

4415

M45-49

4415

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

4927

Males

4410

M45-49

4410

23M→24M

23.0 - 24.0 mi

Top 22%
×6stories
+12ft-82ft

Overall

5802

Males

4968

M45-49

4968

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4829

Males

4229

M45-49

4229

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5474

Males

4573

M45-49

4573

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

3725

Males

3317

M45-49

3317

Passing Analysis

Category:
Athletes Passed
2299
Passed By
668
Net Change
+1631
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6242
5K → 10K66625+641#6242#5601
10K → 15K5852+583#5601#5018
15K → 20K30513+292#5018#4726
20K → Half3514+21#4726#4705
Half → 25K11193+18#4705#4687
25K → 30K144108+36#4687#4651
30K → 20M36163-127#4651#4778
20M → 21M10018+82#4778#4696
21M → 35K4239+3#4696#4693
35K → 23M7367+6#4693#4687
23M → 24M3874-36#4687#4723
24M → 40K5326+27#4723#4696
40K → 25.2M2211+11#4696#4685
25.2M → Finish8915+74#4685#4611
TOTALS2299668+1631
📊

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