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BOSTON MARATHON 2025

Sam Blom

Bib: 7470•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 11%
Division (M55-59)
#0 / 1648
Top 2%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:31
Rank: #4619
Start → 5K
20:31 | 6:36/mi
10K· 6.21 mi
41:29
Rank: #5151 (-532)
5K → 10K
20:58 | 6:45/mi
15K· 9.32 mi
1:02:17
Rank: #5080 (+71)
10K → 15K
20:48 | 6:42/mi
20K· 12.43 mi
1:23:25
Rank: #5103 (-23)
15K → 20K
21:08 | 6:48/mi
Half· 13.11 mi
1:27:56
Rank: #5065 (+38)
20K → Half
4:31 | 6:37/mi
25K· 15.53 mi
1:44:14
Rank: #4887 (+178)
Half → 25K
16:18 | 6:43/mi
30K· 18.64 mi
2:05:38
Rank: #4643 (+244)
25K → 30K
21:24 | 6:53/mi
20M
2:15:07
Rank: #4563 (+80)
30K → 20M
9:29 | 6:59/mi
21M
2:22:31
Rank: #4501 (+62)
20M → 21M
7:24 | 7:24/mi
35K· 21.75 mi
2:27:24
Rank: #4383 (+118)
21M → 35K
4:53 | 6:32/mi
23M
2:36:04
Rank: #4268 (+115)
35K → 23M
8:40 | 6:55/mi
24M
2:42:55
Rank: #4210 (+58)
23M → 24M
6:51 | 6:51/mi
40K· 24.85 mi
2:48:59
Rank: #4210
24M → 40K
6:04 | 7:06/mi
25.2M
2:51:36
Rank: #4190 (+20)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
2:58:38
Rank: #4225 (-35)
25.2M → Finish
7:02 | 6:54/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:56
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:30:42
Pace6:55 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:5420:316:3620:31
6:36
-
10K
6.21 mi10:46:5241:296:4120:58
6:45
+0:09
15K
9.32 mi11:07:401:02:176:4120:48
6:42
-0:03
20K
12.43 mi11:28:481:23:256:4321:08
6:48
+0:06
Half
13.11 mi11:33:191:27:566:424:31
6:37
-0:11
25K
15.53 mi11:49:371:44:146:4316:18
6:43
+0:06
30K
18.64 mi12:11:012:05:386:4421:24
6:53
+0:10
20M
20.00 mi12:20:302:15:076:459:29
6:59
+0:06
21M
21.00 mi12:27:542:22:316:477:24
7:24
+0:25
35K
21.75 mi12:32:472:27:246:474:53
6:32
-0:52
23M
23.00 mi12:41:272:36:046:478:40
6:55
+0:23
24M
24.00 mi12:48:182:42:556:476:51
6:51
-0:04
40K
24.85 mi12:54:222:48:596:486:04
7:06
+0:15
25.2M
25.20 mi12:56:592:51:366:492:37
7:35
+0:29
Finish
26.22 mi13:04:012:58:386:497:02
6:54
-0:41

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

6:32 /mi

Average Pace

6:49 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:37

94% of race

Time at Steady Pace

10:01

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:49 /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 mi10:25:5420:316:3620:31
6:36
#4619
10K
6.21 mi10:46:5241:296:4120:58
6:45
#5151
15K
9.32 mi11:07:401:02:176:4120:48
6:42
#5080
20K
12.43 mi11:28:481:23:256:4321:08
6:48
#5103
Half
13.11 mi11:33:191:27:566:424:31
6:37
#5065
25K
15.53 mi11:49:371:44:146:4316:18
6:43
#4887
30K
18.64 mi12:11:012:05:386:4421:24
6:53
#4643
20M
20.00 mi12:20:302:15:076:459:29
6:59
#4563
21M
21.00 mi12:27:542:22:316:477:24
7:24
#4501
35K
21.75 mi12:32:472:27:246:474:53
6:32
#4383
23M
23.00 mi12:41:272:36:046:478:40
6:55
#4268
24M
24.00 mi12:48:182:42:556:476:51
6:51
#4210
40K
24.85 mi12:54:222:48:596:486:04
7:06
#4210
25.2M
25.20 mi12:56:592:51:366:492:37
7:35
#4190
Finish
26.22 mi13:04:012:58:386:497:02
6:54
#4225
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi4619433143315015(Top 18%)4660(Top 29%)4660(Top 283%)
10K6.21 mi3.10 mi5151-5324794-4634794-4635807(Top 20%)5315(Top 33%)5315(Top 323%)
15K9.32 mi3.11 mi5080+714729+654729+655015(Top 18%)4660(Top 29%)4660(Top 283%)
20K12.43 mi3.11 mi5103-234738-94738-95297(Top 19%)4863(Top 30%)4863(Top 295%)
Half13.11 mi0.68 mi5065+384705+334705+334534(Top 16%)4227(Top 26%)4227(Top 256%)
25K15.53 mi2.42 mi4887+1784540+1654540+1654291(Top 15%)3979(Top 25%)3979(Top 241%)
30K18.64 mi3.11 mi4643+2444315+2254315+2253998(Top 14%)3684(Top 23%)3684(Top 224%)
20M20.00 mi1.36 mi4563+804234+814234+813973(Top 14%)3641(Top 23%)3641(Top 221%)
21M21.00 mi1.00 mi4501+624178+564178+564097(Top 14%)3695(Top 23%)3695(Top 224%)
35K21.75 mi0.75 mi4383+1184066+1124066+1122608(Top 9%)2427(Top 15%)2427(Top 147%)
23M23.00 mi1.25 mi4268+1153962+1043962+1043330(Top 12%)3028(Top 19%)3028(Top 184%)
24M24.00 mi1.00 mi4210+583896+663896+663785(Top 13%)3359(Top 21%)3359(Top 204%)
40K24.85 mi0.85 mi42103890+63890+64418(Top 16%)3786(Top 24%)3786(Top 230%)
25.2M25.20 mi0.35 mi4190+203867+233867+233775(Top 13%)3257(Top 20%)3257(Top 198%)
Finish26.22 mi1.02 mi4225-353891-243891-245061(Top 18%)4149(Top 26%)4149(Top 252%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

5015

Males

4660

M55-59

4660

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5807

Males

5315

M55-59

5315

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

5015

Males

4660

M55-59

4660

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5297

Males

4863

M55-59

4863

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4534

Males

4227

M55-59

4227

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4291

Males

3979

M55-59

3979

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3998

Males

3684

M55-59

3684

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

3973

Males

3641

M55-59

3641

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

4097

Males

3695

M55-59

3695

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2608

Males

2427

M55-59

2427

35K→23M

21.8 - 23.0 mi

Top 12%
×5stories
+23ft-63ft

Overall

3330

Males

3028

M55-59

3028

23M→24M

23.0 - 24.0 mi

Top 13%
×6stories
+12ft-82ft

Overall

3785

Males

3359

M55-59

3359

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4418

Males

3786

M55-59

3786

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3775

Males

3257

M55-59

3257

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2stories
+22ft-21ft

Overall

5061

Males

4149

M55-59

4149

Passing Analysis

Category:
Athletes Passed
1526
Passed By
1132
Net Change
+394
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4619
5K → 10K40572-532#4619#5151
10K → 15K179108+71#5151#5080
15K → 20K112135-23#5080#5103
20K → Half4810+38#5103#5065
Half → 25K19719+178#5065#4887
25K → 30K29349+244#4887#4643
30K → 20M11232+80#4643#4563
20M → 21M10543+62#4563#4501
21M → 35K1202+118#4501#4383
35K → 23M12813+115#4383#4268
23M → 24M8224+58#4268#4210
24M → 40K43430#4210#4210
40K → 25.2M3313+20#4210#4190
25.2M → Finish3469-35#4190#4225
TOTALS15261132+394
📊

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