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BOSTON MARATHON 2023

Billy Hua Lei

NY

Bib: 14303 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 39%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 43%
Division (M50-54)
#0 / 2052
Top 43%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:33/mi
23:26
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:20/mi
46:14
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:23/mi
1:09:11
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:27/mi
1:32:21
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:34/mi
1:37:31
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:39/mi
1:56:03
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:57/mi
2:20:44
↑ 181↓ 1480.2%
138 ft elev
20M
8:16/mi
2:31:58
↑ 64↓ 500.2%
148 ft elev
21M
9:24/mi
2:41:22
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:53/mi
2:47:16
↑ 17↓ 861.7%
156 ft elev
23M
8:14/mi
2:57:35
↑ 23↓ 630.6%
116 ft elev
24M
8:01/mi
3:05:36
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:21/mi
3:12:44
↓ 200.3%
20 ft elev
25.2M
8:59/mi
3:15:50
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:47/mi
3:23:46
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:37:317:26 /mi⚡ faster
2nd Half
1:46:158:06 /mi+9.0%
Positive split — 9.0% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
23:267:333.11 mi23:26
7:33
-
10K
46:147:263.10 mi22:48
7:20
-0:13
15K
1:09:117:253.11 mi22:57
7:23
+0:03
20K
1:32:217:263.11 mi23:10
7:27
+0:04
Half(13.11 mi)
1:37:317:260.68 mi5:10
7:34
+0:07
25K
1:56:037:282.42 mi18:32
7:39
+0:05
30K
2:20:447:333.11 mi24:41
7:57
+0:18
20M
2:31:587:361.36 mi11:14
8:16
+0:19
21M
2:41:227:411.00 mi9:24
9:24
+1:08
35K
2:47:167:410.75 mi5:54
7:53
-1:31
23M
2:57:357:431.25 mi10:19
8:14
+0:21
24M
3:05:367:441.00 mi8:01
8:01
-0:13
40K
3:12:447:450.85 mi7:08
8:21
+0:20
25.2M
3:15:507:460.35 mi3:06
8:59
+0:38
Finish(26.22 mi)
3:23:467:471.02 mi7:56
7:47
-1:12
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:20 /mi

Average Pace

7:47 /mi

Slowest Pace

9:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:37:31

48% of race

Time at Steady Pace

1:05:04

32% of race

Time at Slower Pace

41:11

20% of race

Average Pace: 7:46 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi1000681318131922276837683
10K3.10 mi9502+5047880+2517880+251915176657665
15K3.11 mi9372+1307794+867794+86922276837683
20K3.11 mi9253+1197701+937701+93897074887488
Half(13.11 mi)0.68 mi9335-827752-517752-511075884848484
25K2.42 mi9401-667779-277779-27987079127912
30K3.11 mi9585-1847861-827861-821046280768076
20M1.36 mi9721-1367910-497910-491210887458745
21M1.00 mi10088-3678089-1798089-179154471010610106
35K0.75 mi10125-37808980891125182338233
23M1.25 mi10178-538078+118078+111144381908190
24M1.00 mi10203-258066+128066+121132080518051
40K0.85 mi10266-638070-48070-41229784538453
25.2M0.35 mi10296-30807080701236884318431
Finish(26.22 mi)1.02 mi10289+78035+358035+351054775717571

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21story building
+97ft-345ft

Overall

9222

Males

7683

M50-54

7683

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

9151

Males

7665

M50-54

7665

10K→15K

6.2 - 9.3 mi

Top 35%
×3story building
+67ft-78ft

Overall

9222

Males

7683

M50-54

7683

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

8970

Males

7488

M50-54

7488

20K→Half

12.4 - 13.1 mi

Top 40%
×2story building
+19ft-37ft

Overall

10758

Males

8484

M50-54

8484

Half→25K

13.1 - 15.5 mi

Top 37%
×4story building
+66ft-88ft

Overall

9870

Males

7912

M50-54

7912

25K→30K

15.5 - 18.6 mi

Top 39%
×9story building
+181ft-148ft

Overall

10462

Males

8076

M50-54

8076

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12108

Males

8745

M50-54

8745

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

15447

Males

10106

M50-54

10106

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11251

Males

8233

M50-54

8233

35K→23M

21.8 - 23.0 mi

Top 43%
×5story building
+23ft-63ft

Overall

11443

Males

8190

M50-54

8190

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

11320

Males

8051

M50-54

8051

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12297

Males

8453

M50-54

8453

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12368

Males

8431

M50-54

8431

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2story building
+22ft-21ft

Overall

10547

Males

7571

M50-54

7571

Passing Analysis

Category:
Passed
1667*
Passed By
1948
Net Change
-283
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10006
5K → 10K618*114+504#10006#9502
10K → 15K22696+130#9502#9372
15K → 20K20081+119#9372#9253
20K → Half789-82#9253#9335
Half → 25K100166-66#9335#9401
25K → 30K121*305-184#9401#9585
30K → 20M54190-136#9585#9721
20M → 21M18383-367#9721#10088
21M → 35K3875-37#10088#10125
35K → 23M70123-53#10125#10178
23M → 24M6388-25#10178#10203
24M → 40K49112-63#10203#10266
40K → 25.2M2757-30#10266#10296
25.2M → Finish7669+7#10296#10289
TOTALS1667*1948-283

* Includes athletes who did not complete a segment (DNF/DNQ).

Passing Charts

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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