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BOSTON MARATHON 2025

Lee Shaw

Bib: 14725•M

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 29%
Gender (Male)
#0 / 16105
Top 42%
Masters (Masters Men)
#0 / 10463
Top 30%
Division (M50-54)
#0 / 1996
Top 27%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:56
Rank: #5796
Start → 5K
6:44/mi
20:56 split
10K· 6.21 mi
41:46
Rank: #5585 (+211)
5K → 10K
6:42/mi
20:50 split
15K· 9.32 mi
1:02:31
Rank: #5320 (+265)
10K → 15K
6:41/mi
20:45 split
20K· 12.43 mi
1:23:34
Rank: #5222 (+98)
15K → 20K
6:47/mi
21:03 split
Half· 13.11 mi
1:28:13
Rank: #5270 (-48)
20K → Half
6:49/mi
4:39 split
25K· 15.53 mi
1:45:17
Rank: #5516 (-246)
Half → 25K
7:02/mi
17:04 split
30K· 18.64 mi
2:09:32
Rank: #6322 (-806)
25K → 30K
7:48/mi
24:15 split
20M
2:20:26
Rank: #6521 (-199)
30K → 20M
8:01/mi
10:54 split
21M
2:29:24
Rank: #6783 (-262)
20M → 21M
8:58/mi
8:58 split
35K· 21.75 mi
2:35:17
Rank: #6932 (-149)
21M → 35K
7:52/mi
5:53 split
23M
2:45:48
Rank: #7161 (-229)
35K → 23M
8:24/mi
10:31 split
24M
2:54:23
Rank: #7460 (-299)
23M → 24M
8:35/mi
8:35 split
40K· 24.85 mi
3:02:10
Rank: #7804 (-344)
24M → 40K
9:06/mi
7:47 split
25.2M
3:05:46
Rank: #8030 (-226)
40K → 25.2M
10:26/mi
3:36 split
Finish· 26.22 mi
3:14:08
Rank: #8267 (-237)
25.2M → Finish
8:13/mi
8:22 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:13
Pace6:44 /mi
2nd Half
Distance13.11 mi
Time1:45:55
Pace8:05 /mi
📊Positive Split: 20.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:2520:566:4420:56
6:44
-
10K
6.21 mi11:11:1541:466:4320:50
6:42
-0:02
15K
9.32 mi11:32:001:02:316:4220:45
6:41
-0:01
20K
12.43 mi11:53:031:23:346:4321:03
6:47
+0:06
Half
13.11 mi11:57:421:28:136:444:39
6:49
+0:02
25K
15.53 mi12:14:461:45:176:4717:04
7:02
+0:13
30K
18.64 mi12:39:012:09:326:5724:15
7:48
+0:46
20M
20.00 mi12:49:552:20:267:0110:54
8:01
+0:13
21M
21.00 mi12:58:532:29:247:078:58
8:58
+0:57
35K
21.75 mi13:04:462:35:177:085:53
7:52
-1:06
23M
23.00 mi13:15:172:45:487:1310:31
8:24
+0:32
24M
24.00 mi13:23:522:54:237:168:35
8:35
+0:11
40K
24.85 mi13:31:393:02:107:207:47
9:06
+0:31
25.2M
25.20 mi13:35:153:05:467:223:36
10:26
+1:20
Finish
26.22 mi13:43:373:14:087:258:22
8:13
-2:13

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

6:41 /mi

Average Pace

7:25 /mi

Slowest Pace

10:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:17

54% of race

Time at Steady Pace

59:55

31% of race

Time at Slower Pace

28:56

15% of race

Average Pace: 7:24 /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 mi10:50:2520:566:4420:56
6:44
#5796
10K
6.21 mi11:11:1541:466:4320:50
6:42
#5585
15K
9.32 mi11:32:001:02:316:4220:45
6:41
#5320
20K
12.43 mi11:53:031:23:346:4321:03
6:47
#5222
Half
13.11 mi11:57:421:28:136:444:39
6:49
#5270
25K
15.53 mi12:14:461:45:176:4717:04
7:02
#5516
30K
18.64 mi12:39:012:09:326:5724:15
7:48
#6322
20M
20.00 mi12:49:552:20:267:0110:54
8:01
#6521
21M
21.00 mi12:58:532:29:247:078:58
8:58
#6783
35K
21.75 mi13:04:462:35:177:085:53
7:52
#6932
23M
23.00 mi13:15:172:45:487:1310:31
8:24
#7161
24M
24.00 mi13:23:522:54:237:168:35
8:35
#7460
40K
24.85 mi13:31:393:02:107:207:47
9:06
#7804
25.2M
25.20 mi13:35:153:05:467:223:36
10:26
#8030
Finish
26.22 mi13:43:373:14:087:258:22
8:13
#8267
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5796534853484895(Top 17%)4566(Top 28%)4566(Top 229%)
10K6.21 mi3.10 mi5585+2115163+1855163+1855401(Top 19%)4993(Top 31%)4993(Top 250%)
15K9.32 mi3.11 mi5320+2654935+2284935+2284895(Top 17%)4566(Top 28%)4566(Top 229%)
20K12.43 mi3.11 mi5222+984838+974838+975079(Top 18%)4687(Top 29%)4687(Top 235%)
Half13.11 mi0.68 mi5270-484879-414879-416317(Top 22%)5702(Top 35%)5702(Top 286%)
25K15.53 mi2.42 mi5516-2465070-1915070-1916576(Top 23%)5821(Top 36%)5821(Top 292%)
30K18.64 mi3.11 mi6322-8065691-6215691-6219965(Top 35%)7666(Top 48%)7666(Top 384%)
20M20.00 mi1.36 mi6521-1995823-1325823-13210553(Top 37%)7806(Top 48%)7806(Top 391%)
21M21.00 mi1.00 mi6783-2625999-1765999-17613268(Top 47%)8975(Top 56%)8975(Top 450%)
35K21.75 mi0.75 mi6932-1496094-956094-9511230(Top 40%)7957(Top 49%)7957(Top 399%)
23M23.00 mi1.25 mi7161-2296200-1066200-10612641(Top 45%)8527(Top 53%)8527(Top 427%)
24M24.00 mi1.00 mi7460-2996362-1626362-16215006(Top 53%)9575(Top 59%)9575(Top 480%)
40K24.85 mi0.85 mi7804-3446550-1886550-18816837(Top 59%)10283(Top 64%)10283(Top 515%)
25.2M25.20 mi0.35 mi8030-2266680-1306680-13018700(Top 66%)11144(Top 69%)11144(Top 558%)
Finish26.22 mi1.02 mi8267-2376789-1096789-10914294(Top 50%)9148(Top 57%)9148(Top 458%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4895

Males

4566

M50-54

4566

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5401

Males

4993

M50-54

4993

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4895

Males

4566

M50-54

4566

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

5079

Males

4687

M50-54

4687

20K→Half

12.4 - 13.1 mi

Top 22%
×2stories
+19ft-37ft

Overall

6317

Males

5702

M50-54

5702

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6576

Males

5821

M50-54

5821

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9965

Males

7666

M50-54

7666

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

10553

Males

7806

M50-54

7806

20M→21M

20.0 - 21.0 mi

Top 47%
×8stories
+106ft-24ft

Overall

13268

Males

8975

M50-54

8975

21M→35K

21.0 - 21.8 mi

Top 40%
×7stories
+17ft-86ft

Overall

11230

Males

7957

M50-54

7957

35K→23M

21.8 - 23.0 mi

Top 45%
×5stories
+23ft-63ft

Overall

12641

Males

8527

M50-54

8527

23M→24M

23.0 - 24.0 mi

Top 53%
×6stories
+12ft-82ft

Overall

15006

Males

9575

M50-54

9575

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

16837

Males

10283

M50-54

10283

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

18700

Males

11144

M50-54

11144

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

14294

Males

9148

M50-54

9148

Passing Analysis

Category:
Athletes Passed
1071
Passed By
3542
Net Change
-2471
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5796
5K → 10K312101+211#5796#5585
10K → 15K29328+265#5585#5320
15K → 20K16971+98#5320#5222
20K → Half1967-48#5222#5270
Half → 25K56302-246#5270#5516
25K → 30K41847-806#5516#6322
30K → 20M50249-199#6322#6521
20M → 21M15277-262#6521#6783
21M → 35K22171-149#6783#6932
35K → 23M35264-229#6932#7161
23M → 24M19318-299#7161#7460
24M → 40K17361-344#7460#7804
40K → 25.2M1227-226#7804#8030
25.2M → Finish22259-237#8030#8267
TOTALS10713542-2471
📊

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