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BOSTON MARATHON 2025

Gerry Mazzola

Bib: 13567•M

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 46%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 49%
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:42/mi
23:56
↑ 97↓ 3451.5%
10K· 6.21 mi
7:38/mi
47:40
↑ 79↓ 1380.4%
15K· 9.32 mi
7:37/mi
1:11:19
↑ 67↓ 78
20K· 12.43 mi
7:49/mi
1:35:35
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:40:52
↑ 19↓ 370.5%
25K· 15.53 mi
7:51/mi
1:59:53
↑ 66↓ 880.2%
30K· 18.64 mi
8:11/mi
2:25:19
↑ 181↓ 1480.2%
20M
8:27/mi
2:36:48
↑ 64↓ 500.2%
21M
9:04/mi
2:45:52
↑ 106↓ 241.6%
35K· 21.75 mi
8:32/mi
2:52:15
↑ 17↓ 861.7%
23M
8:34/mi
3:02:59
↑ 23↓ 630.6%
24M
8:20/mi
3:11:19
↓ 821.3%
40K· 24.85 mi
8:23/mi
3:18:29
↓ 200.3%
25.2M
8:56/mi
3:21:34
↑ 13↓ 160.2%
Finish· 26.22 mi
7:56/mi
3:29:39
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:52
Pace7:42 /mi
2nd Half
Distance13.11 mi
Time1:48:47
Pace8:18 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1923:567:4223:56
7:42
-
10K
6.21 mi11:17:0347:407:4023:44
7:38
-0:04
15K
9.32 mi11:40:421:11:197:3923:39
7:37
-0:01
20K
12.43 mi12:04:581:35:357:4124:16
7:49
+0:12
Half
13.11 mi12:10:151:40:527:425:17
7:45
-0:04
25K
15.53 mi12:29:161:59:537:4319:01
7:51
+0:06
30K
18.64 mi12:54:422:25:197:4825:26
8:11
+0:20
20M
20.00 mi13:06:112:36:487:5011:29
8:27
+0:16
21M
21.00 mi13:15:152:45:527:549:04
9:04
+0:37
35K
21.75 mi13:21:382:52:157:556:23
8:32
-0:32
23M
23.00 mi13:32:223:02:597:5710:44
8:34
+0:02
24M
24.00 mi13:40:423:11:197:588:20
8:20
-0:14
40K
24.85 mi13:47:523:18:297:597:10
8:23
+0:03
25.2M
25.20 mi13:50:573:21:348:003:05
8:56
+0:33
Finish
26.22 mi13:59:023:29:398:008:05
7:56
-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

7:37 /mi

Average Pace

8:00 /mi

Slowest Pace

9:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:41:44

77% of race

Time at Steady Pace

38:51

19% of race

Time at Slower Pace

9:04

4% of race

Average Pace: 8:00 /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 mi10:53:1923:567:4223:56
7:42
#13995
10K
6.21 mi11:17:0347:407:4023:44
7:38
#13673
15K
9.32 mi11:40:421:11:197:3923:39
7:37
#13322
20K
12.43 mi12:04:581:35:357:4124:16
7:49
#13287
Half
13.11 mi12:10:151:40:527:425:17
7:45
#13299
25K
15.53 mi12:29:161:59:537:4319:01
7:51
#13165
30K
18.64 mi12:54:422:25:197:4825:26
8:11
#13038
20M
20.00 mi13:06:112:36:487:5011:29
8:27
#13055
21M
21.00 mi13:15:152:45:527:549:04
9:04
#13081
35K
21.75 mi13:21:382:52:157:556:23
8:32
#13165
23M
23.00 mi13:32:223:02:597:5710:44
8:34
#13196
24M
24.00 mi13:40:423:11:197:588:20
8:20
#13188
40K
24.85 mi13:47:523:18:297:597:10
8:23
#13160
25.2M
25.20 mi13:50:573:21:348:003:05
8:56
#13128
Finish
26.22 mi13:59:023:29:398:008:05
7:56
#13121
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi13995100481004812689(Top 45%)9380(Top 58%)9380(Top 470%)
10K6.21 mi3.10 mi13673+3229884+1649884+16413348(Top 47%)9727(Top 60%)9727(Top 487%)
15K9.32 mi3.11 mi13322+3519698+1869698+18612689(Top 45%)9380(Top 58%)9380(Top 470%)
20K12.43 mi3.11 mi13287+359653+459653+4513340(Top 47%)9570(Top 59%)9570(Top 479%)
Half13.11 mi0.68 mi13299-129652+19652+113717(Top 48%)9766(Top 61%)9766(Top 489%)
25K15.53 mi2.42 mi13165+1349560+929560+9212675(Top 45%)9156(Top 57%)9156(Top 459%)
30K18.64 mi3.11 mi13038+1279428+1329428+13212717(Top 45%)9013(Top 56%)9013(Top 452%)
20M20.00 mi1.36 mi13055-179409+199409+1913451(Top 47%)9188(Top 57%)9188(Top 460%)
21M21.00 mi1.00 mi13081-269398+119398+1113878(Top 49%)9275(Top 58%)9275(Top 465%)
35K21.75 mi0.75 mi13165-849413-159413-1515623(Top 55%)9991(Top 62%)9991(Top 501%)
23M23.00 mi1.25 mi13196-319375+389375+3813732(Top 48%)9033(Top 56%)9033(Top 453%)
24M24.00 mi1.00 mi13188+89341+349341+3413458(Top 47%)8877(Top 55%)8877(Top 445%)
40K24.85 mi0.85 mi13160+289307+349307+3412654(Top 45%)8360(Top 52%)8360(Top 419%)
25.2M25.20 mi0.35 mi13128+329284+239284+2311439(Top 40%)7699(Top 48%)7699(Top 386%)
Finish26.22 mi1.02 mi13121+79257+279257+2712405(Top 44%)8238(Top 51%)8238(Top 413%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21story building
+97ft-345ft

Overall

12689

Males

9380

M50-54

9380

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

13348

Males

9727

M50-54

9727

10K→15K

6.2 - 9.3 mi

Top 45%
×3story building
+67ft-78ft

Overall

12689

Males

9380

M50-54

9380

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

13340

Males

9570

M50-54

9570

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

13717

Males

9766

M50-54

9766

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12675

Males

9156

M50-54

9156

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

12717

Males

9013

M50-54

9013

30K→20M

18.6 - 20.0 mi

Top 47%
×5story building
+64ft-50ft

Overall

13451

Males

9188

M50-54

9188

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

13878

Males

9275

M50-54

9275

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

15623

Males

9991

M50-54

9991

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

13732

Males

9033

M50-54

9033

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

13458

Males

8877

M50-54

8877

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12654

Males

8360

M50-54

8360

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

11439

Males

7699

M50-54

7699

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2story building
+22ft-21ft

Overall

12405

Males

8238

M50-54

8238

Passing Analysis

Category:
Athletes Passed
2269
Passed By
1395
Net Change
+874
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13995
5K → 10K467145+322#13995#13673
10K → 15K40453+351#13673#13322
15K → 20K216181+35#13322#13287
20K → Half3244-12#13287#13299
Half → 25K22490+134#13299#13165
25K → 30K309182+127#13165#13038
30K → 20M117134-17#13038#13055
20M → 21M94120-26#13055#13081
21M → 35K31115-84#13081#13165
35K → 23M101132-31#13165#13196
23M → 24M7769+8#13196#13188
24M → 40K8355+28#13188#13160
40K → 25.2M4917+32#13160#13128
25.2M → Finish6558+7#13128#13121
TOTALS22691395+874
📊

Passing Visuals

Category:
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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