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BOSTON MARATHON 2025

Michael Casserly

Bib: 3842•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 15%
Gender (Male)
#0 / 16105
Top 24%
Masters (Masters Men)
#0 / 10463
Top 10%
Division (M40-44)
#0 / 2247
Top 27%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:49
Rank: #5432
Start → 5K
6:42/mi
20:49 split
10K· 6.21 mi
41:43
Rank: #5494 (-62)
5K → 10K
6:44/mi
20:54 split
15K· 9.32 mi
1:02:17
Rank: #5079 (+415)
10K → 15K
6:37/mi
20:34 split
20K· 12.43 mi
1:23:03
Rank: #4840 (+239)
15K → 20K
6:41/mi
20:46 split
Half· 13.11 mi
1:27:31
Rank: #4782 (+58)
20K → Half
6:33/mi
4:28 split
25K· 15.53 mi
1:43:38
Rank: #4552 (+230)
Half → 25K
6:39/mi
16:07 split
30K· 18.64 mi
2:04:57
Rank: #4342 (+210)
25K → 30K
6:52/mi
21:19 split
20M
2:14:22
Rank: #4242 (+100)
30K → 20M
6:56/mi
9:25 split
21M
2:21:47
Rank: #4210 (+32)
20M → 21M
7:25/mi
7:25 split
35K· 21.75 mi
2:26:46
Rank: #4167 (+43)
21M → 35K
6:40/mi
4:59 split
23M
2:35:27
Rank: #4087 (+80)
35K → 23M
6:56/mi
8:41 split
24M
2:42:17
Rank: #4037 (+50)
23M → 24M
6:50/mi
6:50 split
40K· 24.85 mi
2:48:22
Rank: #4033 (+4)
24M → 40K
7:07/mi
6:05 split
25.2M
2:51:06
Rank: #4046 (-13)
40K → 25.2M
7:56/mi
2:44 split
Finish· 26.22 mi
2:58:24
Rank: #4143 (-97)
25.2M → Finish
7:10/mi
7:18 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:31
Pace6:41 /mi
2nd Half
Distance13.11 mi
Time1:30:53
Pace6:56 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:5520:496:4220:49
6:42
-
10K
6.21 mi10:43:4941:436:4320:54
6:44
+0:02
15K
9.32 mi11:04:231:02:176:4120:34
6:37
-0:07
20K
12.43 mi11:25:091:23:036:4120:46
6:41
+0:04
Half
13.11 mi11:29:371:27:316:414:28
6:33
-0:08
25K
15.53 mi11:45:441:43:386:4016:07
6:39
+0:06
30K
18.64 mi12:07:032:04:576:4221:19
6:52
+0:13
20M
20.00 mi12:16:282:14:226:439:25
6:56
+0:04
21M
21.00 mi12:23:532:21:476:457:25
7:25
+0:29
35K
21.75 mi12:28:522:26:466:454:59
6:40
-0:45
23M
23.00 mi12:37:332:35:276:468:41
6:56
+0:16
24M
24.00 mi12:44:232:42:176:466:50
6:50
-0:06
40K
24.85 mi12:50:282:48:226:466:05
7:07
+0:17
25.2M
25.20 mi12:53:122:51:066:472:44
7:56
+0:49
Finish
26.22 mi13:00:302:58:246:497:18
7:10
-0:46

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

6:33 /mi

Average Pace

6:49 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

41:09

23% of race

Time at Steady Pace

1:53:43

64% of race

Time at Slower Pace

23:32

13% of race

Average Pace: 6:48 /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 mi10:22:5520:496:4220:49
6:42
#5432
10K
6.21 mi10:43:4941:436:4320:54
6:44
#5494
15K
9.32 mi11:04:231:02:176:4120:34
6:37
#5079
20K
12.43 mi11:25:091:23:036:4120:46
6:41
#4840
Half
13.11 mi11:29:371:27:316:414:28
6:33
#4782
25K
15.53 mi11:45:441:43:386:4016:07
6:39
#4552
30K
18.64 mi12:07:032:04:576:4221:19
6:52
#4342
20M
20.00 mi12:16:282:14:226:439:25
6:56
#4242
21M
21.00 mi12:23:532:21:476:457:25
7:25
#4210
35K
21.75 mi12:28:522:26:466:454:59
6:40
#4167
23M
23.00 mi12:37:332:35:276:468:41
6:56
#4087
24M
24.00 mi12:44:232:42:176:466:50
6:50
#4037
40K
24.85 mi12:50:282:48:226:466:05
7:07
#4033
25.2M
25.20 mi12:53:122:51:066:472:44
7:56
#4046
Finish
26.22 mi13:00:302:58:246:497:18
7:10
#4143
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5432504250424384(Top 15%)4114(Top 26%)4114(Top 183%)
10K6.21 mi3.10 mi5494-625078-365078-365576(Top 20%)5125(Top 32%)5125(Top 228%)
15K9.32 mi3.11 mi5079+4154728+3504728+3504384(Top 15%)4114(Top 26%)4114(Top 183%)
20K12.43 mi3.11 mi4840+2394511+2174511+2174288(Top 15%)4011(Top 25%)4011(Top 179%)
Half13.11 mi0.68 mi4782+584459+524459+523978(Top 14%)3742(Top 23%)3742(Top 167%)
25K15.53 mi2.42 mi4552+2304254+2054254+2053767(Top 13%)3532(Top 22%)3532(Top 157%)
30K18.64 mi3.11 mi4342+2104061+1934061+1933823(Top 13%)3531(Top 22%)3531(Top 157%)
20M20.00 mi1.36 mi4242+1003966+953966+953677(Top 13%)3383(Top 21%)3383(Top 151%)
21M21.00 mi1.00 mi4210+323926+403926+404172(Top 15%)3751(Top 23%)3751(Top 167%)
35K21.75 mi0.75 mi4167+433883+433883+433270(Top 12%)2986(Top 19%)2986(Top 133%)
23M23.00 mi1.25 mi4087+803802+813802+813399(Top 12%)3087(Top 19%)3087(Top 137%)
24M24.00 mi1.00 mi4037+503752+503752+503687(Top 13%)3283(Top 20%)3283(Top 146%)
40K24.85 mi0.85 mi4033+43741+113741+114544(Top 16%)3876(Top 24%)3876(Top 172%)
25.2M25.20 mi0.35 mi4046-133743-23743-25478(Top 19%)4396(Top 27%)4396(Top 196%)
Finish26.22 mi1.02 mi4143-973817-743817-746761(Top 24%)5171(Top 32%)5171(Top 230%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

4384

Males

4114

M40-44

4114

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5576

Males

5125

M40-44

5125

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

4384

Males

4114

M40-44

4114

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

4288

Males

4011

M40-44

4011

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3978

Males

3742

M40-44

3742

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3767

Males

3532

M40-44

3532

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3823

Males

3531

M40-44

3531

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3677

Males

3383

M40-44

3383

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

4172

Males

3751

M40-44

3751

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3270

Males

2986

M40-44

2986

35K→23M

21.8 - 23.0 mi

Top 12%
×5stories
+23ft-63ft

Overall

3399

Males

3087

M40-44

3087

23M→24M

23.0 - 24.0 mi

Top 13%
×6stories
+12ft-82ft

Overall

3687

Males

3283

M40-44

3283

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4544

Males

3876

M40-44

3876

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5478

Males

4396

M40-44

4396

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2stories
+22ft-21ft

Overall

6761

Males

5171

M40-44

5171

Passing Analysis

Category:
Athletes Passed
1927
Passed By
638
Net Change
+1289
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5432
5K → 10K156218-62#5432#5494
10K → 15K43116+415#5494#5079
15K → 20K26122+239#5079#4840
20K → Half624+58#4840#4782
Half → 25K24515+230#4782#4552
25K → 30K25242+210#4552#4342
30K → 20M12323+100#4342#4242
20M → 21M8048+32#4242#4210
21M → 35K5411+43#4210#4167
35K → 23M10828+80#4167#4087
23M → 24M7222+50#4087#4037
24M → 40K4642+4#4037#4033
40K → 25.2M1629-13#4033#4046
25.2M → Finish21118-97#4046#4143
TOTALS1927638+1289
📊

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