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BOSTON MARATHON 2025

Stefano Muzzarelli

Bib: 7954•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 25%
Gender (Male)
#0 / 16105
Top 38%
Masters (Masters Men)
#0 / 10463
Top 24%
Division (M45-49)
#0 / 2386
Top 34%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:19
Rank: #6769
Start → 5K
21:19 | 6:52/mi
10K· 6.21 mi
42:25
Rank: #6538 (+231)
5K → 10K
21:06 | 6:47/mi
15K· 9.32 mi
1:03:59
Rank: #6791 (-253)
10K → 15K
21:34 | 6:56/mi
20K· 12.43 mi
1:25:57
Rank: #6948 (-157)
15K → 20K
21:58 | 7:04/mi
Half· 13.11 mi
1:30:47
Rank: #7024 (-76)
20K → Half
4:50 | 7:05/mi
25K· 15.53 mi
1:48:14
Rank: #7040 (-16)
Half → 25K
17:27 | 7:12/mi
30K· 18.64 mi
2:11:33
Rank: #7041 (-1)
25K → 30K
23:19 | 7:30/mi
20M
2:21:49
Rank: #7010 (+31)
30K → 20M
10:16 | 7:33/mi
21M
2:30:04
Rank: #7027 (-17)
20M → 21M
8:15 | 8:15/mi
35K· 21.75 mi
2:35:41
Rank: #7057 (-30)
21M → 35K
5:37 | 7:30/mi
23M
2:45:27
Rank: #7060 (-3)
35K → 23M
9:46 | 7:48/mi
24M
2:53:00
Rank: #7061 (-1)
23M → 24M
7:33 | 7:33/mi
40K· 24.85 mi
2:59:38
Rank: #7062 (-1)
24M → 40K
6:38 | 7:45/mi
25.2M
3:02:33
Rank: #7068 (-6)
40K → 25.2M
2:55 | 8:27/mi
Finish· 26.22 mi
3:10:09
Rank: #7104 (-36)
25.2M → Finish
7:36 | 7:27/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:47
Pace6:55 /mi
2nd Half
Distance13.11 mi
Time1:39:22
Pace7:35 /mi
📊Positive Split: 9.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:28:5321:196:5221:19
6:52
-
10K
6.21 mi10:49:5942:256:5021:06
6:47
-0:05
15K
9.32 mi11:11:331:03:596:5221:34
6:56
+0:09
20K
12.43 mi11:33:311:25:576:5521:58
7:04
+0:08
Half
13.11 mi11:38:211:30:476:554:50
7:05
+0:01
25K
15.53 mi11:55:481:48:146:5817:27
7:12
+0:07
30K
18.64 mi12:19:072:11:337:0323:19
7:30
+0:18
20M
20.00 mi12:29:232:21:497:0510:16
7:33
+0:03
21M
21.00 mi12:37:382:30:047:098:15
8:15
+0:42
35K
21.75 mi12:43:152:35:417:105:37
7:30
-0:45
23M
23.00 mi12:53:012:45:277:129:46
7:48
+0:18
24M
24.00 mi13:00:342:53:007:137:33
7:33
-0:15
40K
24.85 mi13:07:122:59:387:146:38
7:45
+0:12
25.2M
25.20 mi13:10:073:02:337:152:55
8:27
+0:42
Finish
26.22 mi13:17:433:10:097:157:36
7:27
-1:00

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

6:47 /mi

Average Pace

7:15 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:14

57% of race

Time at Steady Pace

54:21

29% of race

Time at Slower Pace

27:34

14% of race

Average Pace: 7:15 /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 mi10:28:5321:196:5221:19
6:52
#6769
10K
6.21 mi10:49:5942:256:5021:06
6:47
#6538
15K
9.32 mi11:11:331:03:596:5221:34
6:56
#6791
20K
12.43 mi11:33:311:25:576:5521:58
7:04
#6948
Half
13.11 mi11:38:211:30:476:554:50
7:05
#7024
25K
15.53 mi11:55:481:48:146:5817:27
7:12
#7040
30K
18.64 mi12:19:072:11:337:0323:19
7:30
#7041
20M
20.00 mi12:29:232:21:497:0510:16
7:33
#7010
21M
21.00 mi12:37:382:30:047:098:15
8:15
#7027
35K
21.75 mi12:43:152:35:417:105:37
7:30
#7057
23M
23.00 mi12:53:012:45:277:129:46
7:48
#7060
24M
24.00 mi13:00:342:53:007:137:33
7:33
#7061
40K
24.85 mi13:07:122:59:387:146:38
7:45
#7062
25.2M
25.20 mi13:10:073:02:337:152:55
8:27
#7068
Finish
26.22 mi13:17:433:10:097:157:36
7:27
#7104
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi6769613461347232(Top 25%)6420(Top 40%)6420(Top 269%)
10K6.21 mi3.10 mi6538+2315945+1895945+1896299(Top 22%)5722(Top 36%)5722(Top 240%)
15K9.32 mi3.11 mi6791-2536115-1706115-1707232(Top 25%)6420(Top 40%)6420(Top 269%)
20K12.43 mi3.11 mi6948-1576236-1216236-1217320(Top 26%)6436(Top 40%)6436(Top 270%)
Half13.11 mi0.68 mi7024-766288-526288-528105(Top 29%)6944(Top 43%)6944(Top 291%)
25K15.53 mi2.42 mi7040-166285+36285+37565(Top 27%)6481(Top 40%)6481(Top 272%)
30K18.64 mi3.11 mi7041-16239+466239+467758(Top 27%)6439(Top 40%)6439(Top 270%)
20M20.00 mi1.36 mi7010+316185+546185+547365(Top 26%)6047(Top 38%)6047(Top 253%)
21M21.00 mi1.00 mi7027-176171+146171+148841(Top 31%)6719(Top 42%)6719(Top 282%)
35K21.75 mi0.75 mi7057-306172-16172-18626(Top 30%)6635(Top 41%)6635(Top 278%)
23M23.00 mi1.25 mi7060-36138+346138+348549(Top 30%)6456(Top 40%)6456(Top 271%)
24M24.00 mi1.00 mi7061-16107+316107+318014(Top 28%)6109(Top 38%)6109(Top 256%)
40K24.85 mi0.85 mi7062-16073+346073+348428(Top 30%)6202(Top 39%)6202(Top 260%)
25.2M25.20 mi0.35 mi7068-66062+116062+118451(Top 30%)6136(Top 38%)6136(Top 257%)
Finish26.22 mi1.02 mi7104-366064-26064-28851(Top 31%)6351(Top 39%)6351(Top 266%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

7232

Males

6420

M45-49

6420

5K→10K

3.1 - 6.2 mi

Top 22%
×5stories
+79ft-138ft

Overall

6299

Males

5722

M45-49

5722

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

7232

Males

6420

M45-49

6420

15K→20K

9.3 - 12.4 mi

Top 26%
×5stories
+106ft-86ft

Overall

7320

Males

6436

M45-49

6436

20K→Half

12.4 - 13.1 mi

Top 29%
×2stories
+19ft-37ft

Overall

8105

Males

6944

M45-49

6944

Half→25K

13.1 - 15.5 mi

Top 27%
×4stories
+66ft-88ft

Overall

7565

Males

6481

M45-49

6481

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

7758

Males

6439

M45-49

6439

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

7365

Males

6047

M45-49

6047

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8841

Males

6719

M45-49

6719

21M→35K

21.0 - 21.8 mi

Top 30%
×7stories
+17ft-86ft

Overall

8626

Males

6635

M45-49

6635

35K→23M

21.8 - 23.0 mi

Top 30%
×5stories
+23ft-63ft

Overall

8549

Males

6456

M45-49

6456

23M→24M

23.0 - 24.0 mi

Top 28%
×6stories
+12ft-82ft

Overall

8014

Males

6109

M45-49

6109

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

8428

Males

6202

M45-49

6202

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

8451

Males

6136

M45-49

6136

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2stories
+22ft-21ft

Overall

8851

Males

6351

M45-49

6351

Passing Analysis

Category:
Athletes Passed
1315
Passed By
1650
Net Change
-335
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6769
5K → 10K31887+231#6769#6538
10K → 15K78331-253#6538#6791
15K → 20K87244-157#6791#6948
20K → Half985-76#6948#7024
Half → 25K112128-16#7024#7040
25K → 30K177178-1#7040#7041
30K → 20M11079+31#7041#7010
20M → 21M84101-17#7010#7027
21M → 35K4373-30#7027#7057
35K → 23M8891-3#7057#7060
23M → 24M6364-1#7060#7061
24M → 40K6869-1#7061#7062
40K → 25.2M2228-6#7062#7068
25.2M → Finish5692-36#7068#7104
TOTALS13151650-335
📊

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