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BOSTON MARATHON 2025

Mark Larosa

Bib: 6096•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 45%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 48%
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:37
Rank: #10126
Start → 5K
22:37 | 7:17/mi
10K· 6.21 mi
45:37
Rank: #10674 (-548)
5K → 10K
23:00 | 7:24/mi
15K· 9.32 mi
1:08:44
Rank: #10829 (-155)
10K → 15K
23:07 | 7:26/mi
20K· 12.43 mi
1:31:29
Rank: #10405 (+424)
15K → 20K
22:45 | 7:19/mi
Half· 13.11 mi
1:36:26
Rank: #10352 (+53)
20K → Half
4:57 | 7:15/mi
25K· 15.53 mi
1:54:05
Rank: #9942 (+410)
Half → 25K
17:39 | 7:17/mi
30K· 18.64 mi
2:17:20
Rank: #9417 (+525)
25K → 30K
23:15 | 7:29/mi
20M
2:27:39
Rank: #9254 (+163)
30K → 20M
10:19 | 7:36/mi
21M
2:36:31
Rank: #9430 (-176)
20M → 21M
8:52 | 8:52/mi
35K· 21.75 mi
2:43:20
Rank: #9826 (-396)
21M → 35K
6:49 | 9:07/mi
23M
2:54:24
Rank: #10211 (-385)
35K → 23M
11:04 | 8:50/mi
24M
3:02:16
Rank: #10170 (+41)
23M → 24M
7:52 | 7:52/mi
40K· 24.85 mi
3:12:50
Rank: #11324 (-1154)
24M → 40K
10:34 | 12:22/mi
25.2M
3:17:56
Rank: #11989 (-665)
40K → 25.2M
5:06 | 14:47/mi
Finish· 26.22 mi
3:29:00
Rank: #12905 (-916)
25.2M → Finish
11:04 | 10:52/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:26
Pace7:21 /mi
2nd Half
Distance13.11 mi
Time1:52:34
Pace8:35 /mi
📊Positive Split: 16.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:5322:377:1722:37
7:17
-
10K
6.21 mi11:11:5345:377:2023:00
7:24
+0:07
15K
9.32 mi11:35:001:08:447:2223:07
7:26
+0:02
20K
12.43 mi11:57:451:31:297:2222:45
7:19
-0:07
Half
13.11 mi12:02:421:36:267:214:57
7:15
-0:04
25K
15.53 mi12:20:211:54:057:2117:39
7:17
+0:02
30K
18.64 mi12:43:362:17:207:2223:15
7:29
+0:12
20M
20.00 mi12:53:552:27:397:2310:19
7:36
+0:07
21M
21.00 mi13:02:472:36:317:278:52
8:52
+1:16
35K
21.75 mi13:09:362:43:207:316:49
9:07
+0:15
23M
23.00 mi13:20:402:54:247:3511:04
8:50
-0:17
24M
24.00 mi13:28:323:02:167:367:52
7:52
-0:58
40K
24.85 mi13:39:063:12:507:4610:34
12:22
+4:30
25.2M
25.20 mi13:44:123:17:567:515:06
14:47
+2:25
Finish
26.22 mi13:55:163:29:007:5911:04
10:52
-3:55

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

7:15 /mi

Average Pace

7:59 /mi

Slowest Pace

14:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:35:31

74% of race

Time at Slower Pace

53:29

26% of race

Average Pace: 7:58 /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 mi10:48:5322:377:1722:37
7:17
#10126
10K
6.21 mi11:11:5345:377:2023:00
7:24
#10674
15K
9.32 mi11:35:001:08:447:2223:07
7:26
#10829
20K
12.43 mi11:57:451:31:297:2222:45
7:19
#10405
Half
13.11 mi12:02:421:36:267:214:57
7:15
#10352
25K
15.53 mi12:20:211:54:057:2117:39
7:17
#9942
30K
18.64 mi12:43:362:17:207:2223:15
7:29
#9417
20M
20.00 mi12:53:552:27:397:2310:19
7:36
#9254
21M
21.00 mi13:02:472:36:317:278:52
8:52
#9430
35K
21.75 mi13:09:362:43:207:316:49
9:07
#9826
23M
23.00 mi13:20:402:54:247:3511:04
8:50
#10211
24M
24.00 mi13:28:323:02:167:367:52
7:52
#10170
40K
24.85 mi13:39:063:12:507:4610:34
12:22
#11324
25.2M
25.20 mi13:44:123:17:567:515:06
14:47
#11989
Finish
26.22 mi13:55:163:29:007:5911:04
10:52
#12905
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi101268233823311220(Top 40%)8698(Top 54%)8698(Top 365%)
10K6.21 mi3.10 mi10674-5488498-2658498-26511184(Top 39%)8735(Top 54%)8735(Top 366%)
15K9.32 mi3.11 mi10829-1558561-638561-6311220(Top 40%)8698(Top 54%)8698(Top 365%)
20K12.43 mi3.11 mi10405+4248317+2448317+2449208(Top 32%)7565(Top 47%)7565(Top 317%)
Half13.11 mi0.68 mi10352+538281+368281+369498(Top 33%)7733(Top 48%)7733(Top 324%)
25K15.53 mi2.42 mi9942+4108040+2418040+2418182(Top 29%)6864(Top 43%)6864(Top 288%)
30K18.64 mi3.11 mi9417+5257701+3397701+3397608(Top 27%)6344(Top 39%)6344(Top 266%)
20M20.00 mi1.36 mi9254+1637579+1227579+1227579(Top 27%)6181(Top 38%)6181(Top 259%)
21M21.00 mi1.00 mi9430-1767637-587637-5812664(Top 45%)8660(Top 54%)8660(Top 363%)
35K21.75 mi0.75 mi9826-3967827-1907827-19018720(Top 66%)11346(Top 70%)11346(Top 476%)
23M23.00 mi1.25 mi10211-3857966-1397966-13915290(Top 54%)9752(Top 61%)9752(Top 409%)
24M24.00 mi1.00 mi10170+417916+507916+5010264(Top 36%)7284(Top 45%)7284(Top 305%)
40K24.85 mi0.85 mi11324-11548432-5168432-51625445(Top 90%)14487(Top 90%)14487(Top 607%)
25.2M25.20 mi0.35 mi11989-6658739-3078739-30726971(Top 95%)15249(Top 95%)15249(Top 639%)
Finish26.22 mi1.02 mi12905-9169162-4239162-42325073(Top 88%)14316(Top 89%)14316(Top 600%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21stories
+97ft-345ft

Overall

11220

Males

8698

M45-49

8698

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

11184

Males

8735

M45-49

8735

10K→15K

6.2 - 9.3 mi

Top 40%
×3stories
+67ft-78ft

Overall

11220

Males

8698

M45-49

8698

15K→20K

9.3 - 12.4 mi

Top 32%
×5stories
+106ft-86ft

Overall

9208

Males

7565

M45-49

7565

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

9498

Males

7733

M45-49

7733

Half→25K

13.1 - 15.5 mi

Top 29%
×4stories
+66ft-88ft

Overall

8182

Males

6864

M45-49

6864

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

7608

Males

6344

M45-49

6344

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

7579

Males

6181

M45-49

6181

20M→21M

20.0 - 21.0 mi

Top 45%
×8stories
+106ft-24ft

Overall

12664

Males

8660

M45-49

8660

21M→35K

21.0 - 21.8 mi

Top 66%
×7stories
+17ft-86ft

Overall

18720

Males

11346

M45-49

11346

35K→23M

21.8 - 23.0 mi

Top 54%
×5stories
+23ft-63ft

Overall

15290

Males

9752

M45-49

9752

23M→24M

23.0 - 24.0 mi

Top 36%
×6stories
+12ft-82ft

Overall

10264

Males

7284

M45-49

7284

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

25445

Males

14487

M45-49

14487

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

26971

Males

15249

M45-49

15249

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2stories
+22ft-21ft

Overall

25073

Males

14316

M45-49

14316

Passing Analysis

Category:
Athletes Passed
2065*
Passed By
4841
Net Change
-2779
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10126
5K → 10K93640-548#10126#10674
10K → 15K118273-155#10674#10829
15K → 20K44723+424#10829#10405
20K → Half574+53#10405#10352
Half → 25K419*9+410#10352#9942
25K → 30K54621+525#9942#9417
30K → 20M19128+163#9417#9254
20M → 21M42218-176#9254#9430
21M → 35K18414-396#9430#9826
35K → 23M30413-385#9826#10211
23M → 24M10059+41#10211#10170
24M → 40K11155-1154#10170#11324
40K → 25.2M0665-665#11324#11989
25.2M → Finish3919-916#11989#12905
TOTALS2065*4841-2779

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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