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BOSTON MARATHON 2023

Lu Li

Bib: 15024•M

CA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:11
Rank: #12201
Start → 5K
24:11 | 7:47/mi
10K· 6.21 mi
47:44
Rank: #11634 (+567)
5K → 10K
23:33 | 7:35/mi
15K· 9.32 mi
1:11:44
Rank: #11751 (-117)
10K → 15K
24:00 | 7:43/mi
20K· 12.43 mi
1:35:58
Rank: #11712 (+39)
15K → 20K
24:14 | 7:48/mi
Half· 13.11 mi
1:41:08
Rank: #11657 (+55)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
2:00:23
Rank: #11720 (-63)
Half → 25K
19:15 | 7:56/mi
30K· 18.64 mi
2:27:38
Rank: #12634 (-914)
25K → 30K
27:15 | 8:46/mi
20M
2:40:12
Rank: #13122 (-488)
30K → 20M
12:34 | 9:15/mi
21M
2:50:18
Rank: #13526 (-404)
20M → 21M
10:06 | 10:06/mi
35K· 21.75 mi
2:57:39
Rank: #13933 (-407)
21M → 35K
7:21 | 9:49/mi
23M
3:10:05
Rank: #14432 (-499)
35K → 23M
12:26 | 9:56/mi
24M
3:20:08
Rank: #14830 (-398)
23M → 24M
10:03 | 10:03/mi
40K· 24.85 mi
3:29:51
Rank: #15407 (-577)
24M → 40K
9:43 | 11:22/mi
25.2M
3:33:56
Rank: #15618 (-211)
40K → 25.2M
4:05 | 11:50/mi
Finish· 26.22 mi
3:45:39
Rank: #16301 (-683)
25.2M → Finish
11:43 | 11:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:08
Pace7:43 /mi
2nd Half
Distance13.11 mi
Time2:04:31
Pace9:30 /mi
📊Positive Split: 23.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:4624:117:4724:11
7:47
-
10K
6.21 mi11:17:1947:447:4123:33
7:35
-0:12
15K
9.32 mi11:41:191:11:447:4224:00
7:43
+0:08
20K
12.43 mi12:05:331:35:587:4324:14
7:48
+0:05
Half
13.11 mi12:10:431:41:087:435:10
7:34
-0:14
25K
15.53 mi12:29:582:00:237:4519:15
7:56
+0:22
30K
18.64 mi12:57:132:27:387:5527:15
8:46
+0:50
20M
20.00 mi13:09:472:40:128:0112:34
9:15
+0:29
21M
21.00 mi13:19:532:50:188:0710:06
10:06
+0:51
35K
21.75 mi13:27:142:57:398:107:21
9:49
-0:17
23M
23.00 mi13:39:403:10:058:1612:26
9:56
+0:07
24M
24.00 mi13:49:433:20:088:2010:03
10:03
+0:07
40K
24.85 mi13:59:263:29:518:279:43
11:22
+1:19
25.2M
25.20 mi14:03:313:33:568:294:05
11:50
+0:28
Finish
26.22 mi14:15:143:45:398:3711:43
11:30
-0:20

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

7:34 /mi

Average Pace

8:37 /mi

Slowest Pace

11:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:23

53% of race

Time at Steady Pace

59:36

26% of race

Time at Slower Pace

45:40

20% of race

Average Pace: 8:36 /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 mi10:53:4624:117:4724:11
7:47
#12201
10K
6.21 mi11:17:1947:447:4123:33
7:35
#11634
15K
9.32 mi11:41:191:11:447:4224:00
7:43
#11751
20K
12.43 mi12:05:331:35:587:4324:14
7:48
#11712
Half
13.11 mi12:10:431:41:087:435:10
7:34
#11657
25K
15.53 mi12:29:582:00:237:4519:15
7:56
#11720
30K
18.64 mi12:57:132:27:387:5527:15
8:46
#12634
20M
20.00 mi13:09:472:40:128:0112:34
9:15
#13122
21M
21.00 mi13:19:532:50:188:0710:06
10:06
#13526
35K
21.75 mi13:27:142:57:398:107:21
9:49
#13933
23M
23.00 mi13:39:403:10:058:1612:26
9:56
#14432
24M
24.00 mi13:49:433:20:088:2010:03
10:03
#14830
40K
24.85 mi13:59:263:29:518:279:43
11:22
#15407
25.2M
25.20 mi14:03:313:33:568:294:05
11:50
#15618
Finish
26.22 mi14:15:143:45:398:3711:43
11:30
#16301
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi122019210921012047(Top 45%)9112(Top 60%)9112(Top 444%)
10K6.21 mi3.10 mi11634+5678952+2588952+25811132(Top 42%)8733(Top 58%)8733(Top 426%)
15K9.32 mi3.11 mi11751-1178979-278979-2712047(Top 45%)9112(Top 60%)9112(Top 444%)
20K12.43 mi3.11 mi11712+398947+328947+3211748(Top 44%)8919(Top 59%)8919(Top 435%)
Half13.11 mi0.68 mi11657+558926+218926+2110825(Top 41%)8551(Top 56%)8551(Top 417%)
25K15.53 mi2.42 mi11720-638936-108936-1012215(Top 46%)9005(Top 59%)9005(Top 439%)
30K18.64 mi3.11 mi12634-9149280-3449280-34415879(Top 60%)10429(Top 69%)10429(Top 508%)
20M20.00 mi1.36 mi13122-4889470-1909470-19017767(Top 67%)11124(Top 73%)11124(Top 542%)
21M21.00 mi1.00 mi13526-4049616-1469616-14618374(Top 69%)11372(Top 75%)11372(Top 554%)
35K21.75 mi0.75 mi13933-4079758-1429758-14220803(Top 78%)12381(Top 82%)12381(Top 603%)
23M23.00 mi1.25 mi14432-4999920-1629920-16219761(Top 74%)11909(Top 78%)11909(Top 580%)
24M24.00 mi1.00 mi14830-39810064-14410064-14420907(Top 79%)12390(Top 82%)12390(Top 604%)
40K24.85 mi0.85 mi15407-57710255-19110255-19122986(Top 86%)13307(Top 88%)13307(Top 648%)
25.2M25.20 mi0.35 mi15618-21110337-8210337-8222189(Top 83%)12930(Top 85%)12930(Top 630%)
Finish26.22 mi1.02 mi16301-68310620-28310620-28324672(Top 93%)14154(Top 93%)14154(Top 690%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21stories
+97ft-345ft

Overall

12047

Males

9112

M50-54

9112

5K→10K

3.1 - 6.2 mi

Top 42%
×5stories
+79ft-138ft

Overall

11132

Males

8733

M50-54

8733

10K→15K

6.2 - 9.3 mi

Top 45%
×3stories
+67ft-78ft

Overall

12047

Males

9112

M50-54

9112

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

11748

Males

8919

M50-54

8919

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

10825

Males

8551

M50-54

8551

Half→25K

13.1 - 15.5 mi

Top 46%
×4stories
+66ft-88ft

Overall

12215

Males

9005

M50-54

9005

25K→30K

15.5 - 18.6 mi

Top 60%
×9stories
+181ft-148ft

Overall

15879

Males

10429

M50-54

10429

30K→20M

18.6 - 20.0 mi

Top 67%
×5stories
+64ft-50ft

Overall

17767

Males

11124

M50-54

11124

20M→21M

20.0 - 21.0 mi

Top 69%
×8stories
+106ft-24ft

Overall

18374

Males

11372

M50-54

11372

21M→35K

21.0 - 21.8 mi

Top 78%
×7stories
+17ft-86ft

Overall

20803

Males

12381

M50-54

12381

35K→23M

21.8 - 23.0 mi

Top 74%
×5stories
+23ft-63ft

Overall

19761

Males

11909

M50-54

11909

23M→24M

23.0 - 24.0 mi

Top 79%
×6stories
+12ft-82ft

Overall

20907

Males

12390

M50-54

12390

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

22986

Males

13307

M50-54

13307

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

22189

Males

12930

M50-54

12930

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2stories
+22ft-21ft

Overall

24672

Males

14154

M50-54

14154

Passing Analysis

Category:
Athletes Passed
1319
Passed By
5419
Net Change
-4100
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12201
5K → 10K679112+567#12201#11634
10K → 15K138255-117#11634#11751
15K → 20K184145+39#11751#11712
20K → Half627+55#11712#11657
Half → 25K124187-63#11657#11720
25K → 30K36950-914#11720#12634
30K → 20M22510-488#12634#13122
20M → 21M19423-404#13122#13526
21M → 35K7414-407#13526#13933
35K → 23M14513-499#13933#14432
23M → 24M16414-398#14432#14830
24M → 40K7584-577#14830#15407
40K → 25.2M4215-211#15407#15618
25.2M → Finish7690-683#15618#16301
TOTALS13195419-4100
📊

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