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BOSTON MARATHON 2025

Billy Hua Lei

Bib: 11862•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:24
Rank: #12521
Start → 5K
23:24 | 7:32/mi
10K· 6.21 mi
47:36
Rank: #13592 (-1071)
5K → 10K
24:12 | 7:47/mi
15K· 9.32 mi
1:14:38
Rank: #16389 (-2797)
10K → 15K
27:02 | 8:42/mi
20K· 12.43 mi
1:46:43
Rank: #19805 (-3416)
15K → 20K
32:05 | 10:20/mi
Half· 13.11 mi
1:53:22
Rank: #20105 (-300)
20K → Half
6:39 | 9:45/mi
25K· 15.53 mi
2:18:21
Rank: #21134 (-1029)
Half → 25K
24:59 | 10:18/mi
30K· 18.64 mi
2:54:23
Rank: #22341 (-1207)
25K → 30K
36:02 | 11:36/mi
20M
3:11:00
Rank: #22710 (-369)
30K → 20M
16:37 | 12:14/mi
21M
3:24:47
Rank: #23011 (-301)
20M → 21M
13:47 | 13:47/mi
35K· 21.75 mi
3:32:48
Rank: #23036 (-25)
21M → 35K
8:01 | 10:43/mi
23M
3:47:00
Rank: #23108 (-72)
35K → 23M
14:12 | 11:20/mi
24M
3:58:50
Rank: #23234 (-126)
23M → 24M
11:50 | 11:50/mi
40K· 24.85 mi
4:09:50
Rank: #23399 (-165)
24M → 40K
11:00 | 12:52/mi
25.2M
4:15:18
Rank: #23583 (-184)
40K → 25.2M
5:28 | 15:51/mi
Finish· 26.22 mi
4:27:10
Rank: #23717 (-134)
25.2M → Finish
11:52 | 11:39/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:22
Pace8:39 /mi
2nd Half
Distance13.11 mi
Time2:33:48
Pace11:44 /mi
📊Positive Split: 35.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:4623:247:3223:24
7:32
-
10K
6.21 mi11:15:5847:367:4024:12
7:47
+0:15
15K
9.32 mi11:43:001:14:388:0027:02
8:42
+0:55
20K
12.43 mi12:15:051:46:438:3532:05
10:20
+1:38
Half
13.11 mi12:21:441:53:228:396:39
9:45
-0:35
25K
15.53 mi12:46:432:18:218:5424:59
10:18
+0:33
30K
18.64 mi13:22:452:54:239:2136:02
11:36
+1:18
20M
20.00 mi13:39:223:11:009:3316:37
12:14
+0:38
21M
21.00 mi13:53:093:24:479:4513:47
13:47
+1:33
35K
21.75 mi14:01:103:32:489:478:01
10:43
-3:04
23M
23.00 mi14:15:223:47:009:5214:12
11:20
+0:37
24M
24.00 mi14:27:123:58:509:5711:50
11:50
+0:30
40K
24.85 mi14:38:124:09:5010:0311:00
12:52
+1:02
25.2M
25.20 mi14:43:404:15:1810:085:28
15:51
+2:59
Finish
26.22 mi14:55:324:27:1010:1211:52
11:39
-4:12

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

7:32 /mi

Average Pace

10:12 /mi

Slowest Pace

15:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:17

30% of race

Time at Steady Pace

2:35:38

58% of race

Time at Slower Pace

30:15

11% of race

Average Pace: 10:11 /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 mi10:51:4623:247:3223:24
7:32
#12521
10K
6.21 mi11:15:5847:367:4024:12
7:47
#13592
15K
9.32 mi11:43:001:14:388:0027:02
8:42
#16389
20K
12.43 mi12:15:051:46:438:3532:05
10:20
#19805
Half
13.11 mi12:21:441:53:228:396:39
9:45
#20105
25K
15.53 mi12:46:432:18:218:5424:59
10:18
#21134
30K
18.64 mi13:22:452:54:239:2136:02
11:36
#22341
20M
20.00 mi13:39:223:11:009:3316:37
12:14
#22710
21M
21.00 mi13:53:093:24:479:4513:47
13:47
#23011
35K
21.75 mi14:01:103:32:489:478:01
10:43
#23036
23M
23.00 mi14:15:223:47:009:5214:12
11:20
#23108
24M
24.00 mi14:27:123:58:509:5711:50
11:50
#23234
40K
24.85 mi14:38:124:09:5010:0311:00
12:52
#23399
25.2M
25.20 mi14:43:404:15:1810:085:28
15:51
#23583
Finish
26.22 mi14:55:324:27:1010:1211:52
11:39
#23717
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi125219419941920494(Top 72%)12734(Top 79%)12734(Top 638%)
10K6.21 mi3.10 mi13592-10719853-4349853-43414700(Top 52%)10301(Top 64%)10301(Top 516%)
15K9.32 mi3.11 mi16389-279710972-111910972-111920494(Top 72%)12734(Top 79%)12734(Top 638%)
20K12.43 mi3.11 mi19805-341612384-141212384-141224876(Top 88%)14619(Top 91%)14619(Top 732%)
Half13.11 mi0.68 mi20105-30012514-13012514-13024224(Top 85%)14326(Top 89%)14326(Top 718%)
25K15.53 mi2.42 mi21134-102912962-44812962-44823963(Top 84%)14181(Top 88%)14181(Top 710%)
30K18.64 mi3.11 mi22341-120713465-50313465-50324991(Top 88%)14518(Top 90%)14518(Top 727%)
20M20.00 mi1.36 mi22710-36913598-13313598-13325570(Top 90%)14716(Top 91%)14716(Top 737%)
21M21.00 mi1.00 mi23011-30113719-12113719-12125981(Top 91%)14878(Top 92%)14878(Top 745%)
35K21.75 mi0.75 mi23036-2513718+113718+123609(Top 83%)13693(Top 85%)13693(Top 686%)
23M23.00 mi1.25 mi23108-7213725-713725-723971(Top 84%)13827(Top 86%)13827(Top 693%)
24M24.00 mi1.00 mi23234-12613760-3513760-3525460(Top 90%)14536(Top 90%)14536(Top 728%)
40K24.85 mi0.85 mi23399-16513834-7413834-7426150(Top 92%)14862(Top 92%)14862(Top 745%)
25.2M25.20 mi0.35 mi23583-18413905-7113905-7127634(Top 97%)15614(Top 97%)15614(Top 782%)
Finish26.22 mi1.02 mi23717-13413965-6013965-6026353(Top 93%)14964(Top 93%)14964(Top 750%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21stories
+97ft-345ft

Overall

20494

Males

12734

M50-54

12734

5K→10K

3.1 - 6.2 mi

Top 52%
×5stories
+79ft-138ft

Overall

14700

Males

10301

M50-54

10301

10K→15K

6.2 - 9.3 mi

Top 72%
×3stories
+67ft-78ft

Overall

20494

Males

12734

M50-54

12734

15K→20K

9.3 - 12.4 mi

Top 88%
×5stories
+106ft-86ft

Overall

24876

Males

14619

M50-54

14619

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

24224

Males

14326

M50-54

14326

Half→25K

13.1 - 15.5 mi

Top 84%
×4stories
+66ft-88ft

Overall

23963

Males

14181

M50-54

14181

25K→30K

15.5 - 18.6 mi

Top 88%
×9stories
+181ft-148ft

Overall

24991

Males

14518

M50-54

14518

30K→20M

18.6 - 20.0 mi

Top 90%
×5stories
+64ft-50ft

Overall

25570

Males

14716

M50-54

14716

20M→21M

20.0 - 21.0 mi

Top 91%
×8stories
+106ft-24ft

Overall

25981

Males

14878

M50-54

14878

21M→35K

21.0 - 21.8 mi

Top 83%
×7stories
+17ft-86ft

Overall

23609

Males

13693

M50-54

13693

35K→23M

21.8 - 23.0 mi

Top 84%
×5stories
+23ft-63ft

Overall

23971

Males

13827

M50-54

13827

23M→24M

23.0 - 24.0 mi

Top 90%
×6stories
+12ft-82ft

Overall

25460

Males

14536

M50-54

14536

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

26150

Males

14862

M50-54

14862

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1story
+13ft-16ft

Overall

27634

Males

15614

M50-54

15614

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2stories
+22ft-21ft

Overall

26353

Males

14964

M50-54

14964

Passing Analysis

Category:
Athletes Passed
271
Passed By
11467
Net Change
-11196
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12521
5K → 10K391110-1071#12521#13592
10K → 15K52802-2797#13592#16389
15K → 20K43420-3416#16389#19805
20K → Half4304-300#19805#20105
Half → 25K191048-1029#20105#21134
25K → 30K231230-1207#21134#22341
30K → 20M25394-369#22341#22710
20M → 21M13314-301#22710#23011
21M → 35K3560-25#23011#23036
35K → 23M47119-72#23036#23108
23M → 24M24150-126#23108#23234
24M → 40K18183-165#23234#23399
40K → 25.2M2186-184#23399#23583
25.2M → Finish13147-134#23583#23717
TOTALS27111467-11196
📊

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