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BOSTON MARATHON 2025

Lei Tan

Bib: 21937•M

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:33
Rank: #24273
Start → 5K
29:33 | 9:31/mi
10K· 6.21 mi
59:07
Rank: #24217 (+56)
5K → 10K
29:34 | 9:31/mi
15K· 9.32 mi
1:29:19
Rank: #24267 (-50)
10K → 15K
30:12 | 9:43/mi
20K· 12.43 mi
2:00:04
Rank: #24195 (+72)
15K → 20K
30:45 | 9:54/mi
Half· 13.11 mi
2:06:43
Rank: #24209 (-14)
20K → Half
6:39 | 9:45/mi
25K· 15.53 mi
2:32:07
Rank: #24234 (-25)
Half → 25K
25:24 | 10:29/mi
30K· 18.64 mi
3:05:22
Rank: #24087 (+147)
25K → 30K
33:15 | 10:42/mi
20M
3:20:15
Rank: #24029 (+58)
30K → 20M
14:53 | 10:57/mi
21M
3:31:18
Rank: #23890 (+139)
20M → 21M
11:03 | 11:03/mi
35K· 21.75 mi
3:39:01
Rank: #23831 (+59)
21M → 35K
7:43 | 10:19/mi
23M
3:52:29
Rank: #23769 (+62)
35K → 23M
13:28 | 10:45/mi
24M
4:03:16
Rank: #23759 (+10)
23M → 24M
10:47 | 10:47/mi
40K· 24.85 mi
4:12:24
Rank: #23713 (+46)
24M → 40K
9:08 | 10:41/mi
25.2M
4:16:19
Rank: #23695 (+18)
40K → 25.2M
3:55 | 11:21/mi
Finish· 26.22 mi
4:26:59
Rank: #23701 (-6)
25.2M → Finish
10:40 | 10:28/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:43
Pace9:40 /mi
2nd Half
Distance13.11 mi
Time2:20:16
Pace10:42 /mi
📊Positive Split: 10.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:3829:339:3129:33
9:31
-
10K
6.21 mi11:57:1259:079:3129:34
9:31
0:00
15K
9.32 mi12:27:241:29:199:3530:12
9:43
+0:12
20K
12.43 mi12:58:092:00:049:4030:45
9:54
+0:11
Half
13.11 mi13:04:482:06:439:406:39
9:45
-0:09
25K
15.53 mi13:30:122:32:079:4825:24
10:29
+0:44
30K
18.64 mi14:03:273:05:229:5733:15
10:42
+0:13
20M
20.00 mi14:18:203:20:1510:0114:53
10:57
+0:15
21M
21.00 mi14:29:233:31:1810:0411:03
11:03
+0:06
35K
21.75 mi14:37:063:39:0110:047:43
10:19
-0:44
23M
23.00 mi14:50:343:52:2910:0613:28
10:45
+0:26
24M
24.00 mi15:01:214:03:1610:0810:47
10:47
+0:02
40K
24.85 mi15:10:294:12:2410:099:08
10:41
-0:06
25.2M
25.20 mi15:14:244:16:1910:103:55
11:21
+0:40
Finish
26.22 mi15:25:044:26:5910:1110:40
10:28
-0:53

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

9:31 /mi

Average Pace

10:11 /mi

Slowest Pace

11:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:06

54% of race

Time at Steady Pace

1:57:58

44% of race

Time at Slower Pace

3:55

1% 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 mi11:27:3829:339:3129:33
9:31
#24273
10K
6.21 mi11:57:1259:079:3129:34
9:31
#24217
15K
9.32 mi12:27:241:29:199:3530:12
9:43
#24267
20K
12.43 mi12:58:092:00:049:4030:45
9:54
#24195
Half
13.11 mi13:04:482:06:439:406:39
9:45
#24209
25K
15.53 mi13:30:122:32:079:4825:24
10:29
#24234
30K
18.64 mi14:03:273:05:229:5733:15
10:42
#24087
20M
20.00 mi14:18:203:20:1510:0114:53
10:57
#24029
21M
21.00 mi14:29:233:31:1810:0411:03
11:03
#23890
35K
21.75 mi14:37:063:39:0110:047:43
10:19
#23831
23M
23.00 mi14:50:343:52:2910:0613:28
10:45
#23769
24M
24.00 mi15:01:214:03:1610:0810:47
10:47
#23759
40K
24.85 mi15:10:294:12:2410:099:08
10:41
#23713
25.2M
25.20 mi15:14:244:16:1910:103:55
11:21
#23695
Finish
26.22 mi15:25:044:26:5910:1110:40
10:28
#23701
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi24273143741437424335(Top 86%)14406(Top 89%)14406(Top 1144%)
10K6.21 mi3.10 mi24217+5614350+2414350+2424155(Top 85%)14318(Top 89%)14318(Top 1137%)
15K9.32 mi3.11 mi24267-5014380-3014380-3024335(Top 86%)14406(Top 89%)14406(Top 1144%)
20K12.43 mi3.11 mi24195+7214332+4814332+4824004(Top 85%)14234(Top 88%)14234(Top 1131%)
Half13.11 mi0.68 mi24209-1414330+214330+224223(Top 85%)14325(Top 89%)14325(Top 1138%)
25K15.53 mi2.42 mi24234-2514332-214332-224328(Top 86%)14339(Top 89%)14339(Top 1139%)
30K18.64 mi3.11 mi24087+14714252+8014252+8023402(Top 82%)13791(Top 86%)13791(Top 1095%)
20M20.00 mi1.36 mi24029+5814198+5414198+5423495(Top 83%)13757(Top 85%)13757(Top 1093%)
21M21.00 mi1.00 mi23890+13914123+7514123+7521537(Top 76%)12755(Top 79%)12755(Top 1013%)
35K21.75 mi0.75 mi23831+5914084+3914084+3922728(Top 80%)13270(Top 82%)13270(Top 1054%)
23M23.00 mi1.25 mi23769+6214031+5314031+5322652(Top 80%)13175(Top 82%)13175(Top 1046%)
24M24.00 mi1.00 mi23759+1014017+1414017+1423530(Top 83%)13583(Top 84%)13583(Top 1079%)
40K24.85 mi0.85 mi23713+4613975+4213975+4222388(Top 79%)12931(Top 80%)12931(Top 1027%)
25.2M25.20 mi0.35 mi23695+1813962+1313962+1321674(Top 76%)12631(Top 78%)12631(Top 1003%)
Finish26.22 mi1.02 mi23701-613956+613956+624204(Top 85%)13872(Top 86%)13872(Top 1102%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21stories
+97ft-345ft

Overall

24335

Males

14406

M60-64

14406

5K→10K

3.1 - 6.2 mi

Top 85%
×5stories
+79ft-138ft

Overall

24155

Males

14318

M60-64

14318

10K→15K

6.2 - 9.3 mi

Top 86%
×3stories
+67ft-78ft

Overall

24335

Males

14406

M60-64

14406

15K→20K

9.3 - 12.4 mi

Top 85%
×5stories
+106ft-86ft

Overall

24004

Males

14234

M60-64

14234

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

24223

Males

14325

M60-64

14325

Half→25K

13.1 - 15.5 mi

Top 86%
×4stories
+66ft-88ft

Overall

24328

Males

14339

M60-64

14339

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

23402

Males

13791

M60-64

13791

30K→20M

18.6 - 20.0 mi

Top 83%
×5stories
+64ft-50ft

Overall

23495

Males

13757

M60-64

13757

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

21537

Males

12755

M60-64

12755

21M→35K

21.0 - 21.8 mi

Top 80%
×7stories
+17ft-86ft

Overall

22728

Males

13270

M60-64

13270

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

22652

Males

13175

M60-64

13175

23M→24M

23.0 - 24.0 mi

Top 83%
×6stories
+12ft-82ft

Overall

23530

Males

13583

M60-64

13583

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

22388

Males

12931

M60-64

12931

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

21674

Males

12631

M60-64

12631

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

24204

Males

13872

M60-64

13872

Passing Analysis

Category:
Athletes Passed
1499
Passed By
927
Net Change
+572
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24273
5K → 10K255199+56#24273#24217
10K → 15K126176-50#24217#24267
15K → 20K16997+72#24267#24195
20K → Half1731-14#24195#24209
Half → 25K109134-25#24209#24234
25K → 30K23083+147#24234#24087
30K → 20M10042+58#24087#24029
20M → 21M1445+139#24029#23890
21M → 35K7617+59#23890#23831
35K → 23M10139+62#23831#23769
23M → 24M4434+10#23769#23759
24M → 40K6822+46#23759#23713
40K → 25.2M235+18#23713#23695
25.2M → Finish3743-6#23695#23701
TOTALS1499927+572
📊

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