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BOSTON MARATHON 2025

Marcelo Peirano

Bib: 10410•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

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
7:07/mi
22:08
↑ 97↓ 3451.5%
10K· 6.21 mi
7:10/mi
44:25
↑ 79↓ 1380.4%
15K· 9.32 mi
7:14/mi
1:06:54
↑ 67↓ 78
20K· 12.43 mi
7:21/mi
1:29:44
↑ 106↓ 860.1%
Half· 13.11 mi
7:09/mi
1:34:37
↑ 19↓ 370.5%
25K· 15.53 mi
7:18/mi
1:52:18
↑ 66↓ 880.2%
30K· 18.64 mi
7:30/mi
2:15:37
↑ 181↓ 1480.2%
20M
7:24/mi
2:25:40
↑ 64↓ 500.2%
21M
7:42/mi
2:33:22
↑ 106↓ 241.6%
35K· 21.75 mi
7:01/mi
2:38:37
↑ 17↓ 861.7%
23M
7:07/mi
2:47:32
↑ 23↓ 630.6%
24M
7:00/mi
2:54:32
↓ 821.3%
40K· 24.85 mi
7:10/mi
3:00:40
↓ 200.3%
25.2M
7:38/mi
3:03:18
↑ 13↓ 160.2%
Finish· 26.22 mi
6:43/mi
3:10:09
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:34:37
Pace7:13 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:35:32
Pace7:17 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:4422:087:0722:08
7:07
-
10K
6.21 mi11:10:0144:257:0922:17
7:10
+0:03
15K
9.32 mi11:32:301:06:547:1122:29
7:14
+0:04
20K
12.43 mi11:55:201:29:447:1322:50
7:21
+0:07
Half
13.11 mi12:00:131:34:377:134:53
7:09
-0:12
25K
15.53 mi12:17:541:52:187:1417:41
7:18
+0:09
30K
18.64 mi12:41:132:15:377:1723:19
7:30
+0:12
20M
20.00 mi12:51:162:25:407:1710:03
7:24
-0:06
21M
21.00 mi12:58:582:33:227:187:42
7:42
+0:18
35K
21.75 mi13:04:132:38:377:185:15
7:01
-0:41
23M
23.00 mi13:13:082:47:327:178:55
7:07
+0:06
24M
24.00 mi13:20:082:54:327:167:00
7:00
-0:07
40K
24.85 mi13:26:163:00:407:166:08
7:10
+0:10
25.2M
25.20 mi13:28:543:03:187:162:38
7:38
+0:28
Finish
26.22 mi13:35:453:10:097:156:51
6:43
-0:55

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

6:43 /mi

Average Pace

7:15 /mi

Slowest Pace

7:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:26:27

77% of race

Time at Steady Pace

43:42

23% of race

Time at Slower Pace

0:00

0% 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 mi10:47:4422:087:0722:08
7:07
#8836
10K
6.21 mi11:10:0144:257:0922:17
7:10
#8998
15K
9.32 mi11:32:301:06:547:1122:29
7:14
#9137
20K
12.43 mi11:55:201:29:447:1322:50
7:21
#9163
Half
13.11 mi12:00:131:34:377:134:53
7:09
#9143
25K
15.53 mi12:17:541:52:187:1417:41
7:18
#8936
30K
18.64 mi12:41:132:15:377:1723:19
7:30
#8631
20M
20.00 mi12:51:162:25:407:1710:03
7:24
#8402
21M
21.00 mi12:58:582:33:227:187:42
7:42
#8154
35K
21.75 mi13:04:132:38:377:185:15
7:01
#8006
23M
23.00 mi13:13:082:47:327:178:55
7:07
#7701
24M
24.00 mi13:20:082:54:327:167:00
7:00
#7510
40K
24.85 mi13:26:163:00:407:166:08
7:10
#7341
25.2M
25.20 mi13:28:543:03:187:162:38
7:38
#7273
Finish
26.22 mi13:35:453:10:097:156:51
6:43
#7105
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi8836751375139413(Top 33%)7771(Top 48%)7771(Top 326%)
10K6.21 mi3.10 mi8998-1627595-827595-829239(Top 33%)7733(Top 48%)7733(Top 324%)
15K9.32 mi3.11 mi9137-1397663-687663-689413(Top 33%)7771(Top 48%)7771(Top 326%)
20K12.43 mi3.11 mi9163-267654+97654+99431(Top 33%)7695(Top 48%)7695(Top 323%)
Half13.11 mi0.68 mi9143+207640+147640+148645(Top 30%)7257(Top 45%)7257(Top 304%)
25K15.53 mi2.42 mi8936+2077493+1477493+1478293(Top 29%)6928(Top 43%)6928(Top 290%)
30K18.64 mi3.11 mi8631+3057259+2347259+2347759(Top 27%)6440(Top 40%)6440(Top 270%)
20M20.00 mi1.36 mi8402+2297088+1717088+1716338(Top 22%)5420(Top 34%)5420(Top 227%)
21M21.00 mi1.00 mi8154+2486905+1836905+1835627(Top 20%)4820(Top 30%)4820(Top 202%)
35K21.75 mi0.75 mi8006+1486785+1206785+1205448(Top 19%)4688(Top 29%)4688(Top 196%)
23M23.00 mi1.25 mi7701+3056544+2416544+2414449(Top 16%)3916(Top 24%)3916(Top 164%)
24M24.00 mi1.00 mi7510+1916389+1556389+1554624(Top 16%)3995(Top 25%)3995(Top 167%)
40K24.85 mi0.85 mi7341+1696257+1326257+1324890(Top 17%)4134(Top 26%)4134(Top 173%)
25.2M25.20 mi0.35 mi7273+686203+546203+544024(Top 14%)3440(Top 21%)3440(Top 144%)
Finish26.22 mi1.02 mi7105+1686065+1386065+1384009(Top 14%)3442(Top 21%)3442(Top 144%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21story building
+97ft-345ft

Overall

9413

Males

7771

M45-49

7771

5K→10K

3.1 - 6.2 mi

Top 33%
×5story building
+79ft-138ft

Overall

9239

Males

7733

M45-49

7733

10K→15K

6.2 - 9.3 mi

Top 33%
×3story building
+67ft-78ft

Overall

9413

Males

7771

M45-49

7771

15K→20K

9.3 - 12.4 mi

Top 33%
×5story building
+106ft-86ft

Overall

9431

Males

7695

M45-49

7695

20K→Half

12.4 - 13.1 mi

Top 30%
×2story building
+19ft-37ft

Overall

8645

Males

7257

M45-49

7257

Half→25K

13.1 - 15.5 mi

Top 29%
×4story building
+66ft-88ft

Overall

8293

Males

6928

M45-49

6928

25K→30K

15.5 - 18.6 mi

Top 27%
×9story building
+181ft-148ft

Overall

7759

Males

6440

M45-49

6440

30K→20M

18.6 - 20.0 mi

Top 22%
×5story building
+64ft-50ft

Overall

6338

Males

5420

M45-49

5420

20M→21M

20.0 - 21.0 mi

Top 20%
×8story building
+106ft-24ft

Overall

5627

Males

4820

M45-49

4820

21M→35K

21.0 - 21.8 mi

Top 19%
×7story building
+17ft-86ft

Overall

5448

Males

4688

M45-49

4688

35K→23M

21.8 - 23.0 mi

Top 16%
×5story building
+23ft-63ft

Overall

4449

Males

3916

M45-49

3916

23M→24M

23.0 - 24.0 mi

Top 16%
×6story building
+12ft-82ft

Overall

4624

Males

3995

M45-49

3995

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4890

Males

4134

M45-49

4134

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

4024

Males

3440

M45-49

3440

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2story building
+22ft-21ft

Overall

4009

Males

3442

M45-49

3442

Passing Analysis

Category:
Athletes Passed
2663
Passed By
932
Net Change
+1731
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8836
5K → 10K145307-162#8836#8998
10K → 15K119258-139#8998#9137
15K → 20K161187-26#9137#9163
20K → Half4222+20#9163#9143
Half → 25K25548+207#9143#8936
25K → 30K38075+305#8936#8631
30K → 20M2367+229#8631#8402
20M → 21M2524+248#8402#8154
21M → 35K1535+148#8154#8006
35K → 23M3072+305#8006#7701
23M → 24M1943+191#7701#7510
24M → 40K1756+169#7510#7341
40K → 25.2M702+68#7341#7273
25.2M → Finish1746+168#7273#7105
TOTALS2663932+1731
📊

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