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BOSTON MARATHON 2025

Simon Perez

Bib: 31700•M

FL

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0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:08
Rank: #22652
Start → 5K
28:08 | 9:03/mi
10K· 6.21 mi
55:11
Rank: #21867 (+785)
5K → 10K
27:03 | 8:42/mi
15K· 9.32 mi
1:21:39
Rank: #21042 (+825)
10K → 15K
26:28 | 8:31/mi
20K· 12.43 mi
1:48:30
Rank: #20585 (+457)
15K → 20K
26:51 | 8:39/mi
Half· 13.11 mi
1:54:15
Rank: #20492 (+93)
20K → Half
5:45 | 8:26/mi
25K· 15.53 mi
2:15:32
Rank: #20203 (+289)
Half → 25K
21:17 | 8:47/mi
30K· 18.64 mi
2:43:28
Rank: #19693 (+510)
25K → 30K
27:56 | 8:59/mi
20M
2:55:41
Rank: #19479 (+214)
30K → 20M
12:13 | 8:59/mi
21M
3:04:49
Rank: #19178 (+301)
20M → 21M
9:08 | 9:08/mi
35K· 21.75 mi
3:11:14
Rank: #19069 (+109)
21M → 35K
6:25 | 8:35/mi
23M
3:21:50
Rank: #18726 (+343)
35K → 23M
10:36 | 8:28/mi
24M
3:29:58
Rank: #18446 (+280)
23M → 24M
8:08 | 8:08/mi
40K· 24.85 mi
3:36:51
Rank: #18158 (+288)
24M → 40K
6:53 | 8:03/mi
25.2M
3:39:52
Rank: #18045 (+113)
40K → 25.2M
3:01 | 8:45/mi
Finish· 26.22 mi
3:47:37
Rank: #17748 (+297)
25.2M → Finish
7:45 | 7:36/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:54:15
Pace8:43 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:53:22
Pace8:39 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:5728:089:0328:08
9:03
-
10K
6.21 mi12:19:0055:118:5327:03
8:42
-0:21
15K
9.32 mi12:45:281:21:398:4626:28
8:31
-0:11
20K
12.43 mi13:12:191:48:308:4426:51
8:39
+0:08
Half
13.11 mi13:18:041:54:158:435:45
8:26
-0:13
25K
15.53 mi13:39:212:15:328:4321:17
8:47
+0:21
30K
18.64 mi14:07:172:43:288:4627:56
8:59
+0:12
20M
20.00 mi14:19:302:55:418:4712:13
8:59
0:00
21M
21.00 mi14:28:383:04:498:489:08
9:08
+0:09
35K
21.75 mi14:35:033:11:148:486:25
8:35
-0:33
23M
23.00 mi14:45:393:21:508:4710:36
8:28
-0:07
24M
24.00 mi14:53:473:29:588:458:08
8:08
-0:20
40K
24.85 mi15:00:403:36:518:436:53
8:03
-0:05
25.2M
25.20 mi15:03:413:39:528:433:01
8:45
+0:42
Finish
26.22 mi15:11:263:47:378:417:45
7:36
-1:09

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

7:36 /mi

Average Pace

8:41 /mi

Slowest Pace

9:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

28:31

13% of race

Time at Steady Pace

2:01:41

53% of race

Time at Slower Pace

1:17:25

34% of race

Average Pace: 8:41 /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 mi11:51:5728:089:0328:08
9:03
#22652
10K
6.21 mi12:19:0055:118:5327:03
8:42
#21867
15K
9.32 mi12:45:281:21:398:4626:28
8:31
#21042
20K
12.43 mi13:12:191:48:308:4426:51
8:39
#20585
Half
13.11 mi13:18:041:54:158:435:45
8:26
#20492
25K
15.53 mi13:39:212:15:328:4321:17
8:47
#20203
30K
18.64 mi14:07:172:43:288:4627:56
8:59
#19693
20M
20.00 mi14:19:302:55:418:4712:13
8:59
#19479
21M
21.00 mi14:28:383:04:498:489:08
9:08
#19178
35K
21.75 mi14:35:033:11:148:486:25
8:35
#19069
23M
23.00 mi14:45:393:21:508:4710:36
8:28
#18726
24M
24.00 mi14:53:473:29:588:458:08
8:08
#18446
40K
24.85 mi15:00:403:36:518:436:53
8:03
#18158
25.2M
25.20 mi15:03:413:39:528:433:01
8:45
#18045
Finish
26.22 mi15:11:263:47:378:417:45
7:36
#17748
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi22652135981359819425(Top 68%)12236(Top 76%)12236(Top 217%)
10K6.21 mi3.10 mi21867+78513271+32713271+32720891(Top 74%)12870(Top 80%)12870(Top 228%)
15K9.32 mi3.11 mi21042+82512921+35012921+35019425(Top 68%)12236(Top 76%)12236(Top 217%)
20K12.43 mi3.11 mi20585+45712721+20012721+20019077(Top 67%)12062(Top 75%)12062(Top 214%)
Half13.11 mi0.68 mi20492+9312676+4512676+4518691(Top 66%)11900(Top 74%)11900(Top 211%)
25K15.53 mi2.42 mi20203+28912539+13712539+13718805(Top 66%)11878(Top 74%)11878(Top 211%)
30K18.64 mi3.11 mi19693+51012291+24812291+24817641(Top 62%)11211(Top 70%)11211(Top 199%)
20M20.00 mi1.36 mi19479+21412172+11912172+11916728(Top 59%)10698(Top 66%)10698(Top 190%)
21M21.00 mi1.00 mi19178+30112021+15112021+15114263(Top 50%)9466(Top 59%)9466(Top 168%)
35K21.75 mi0.75 mi19069+10911955+6611955+6615930(Top 56%)10157(Top 63%)10157(Top 180%)
23M23.00 mi1.25 mi18726+34311779+17611779+17613102(Top 46%)8753(Top 54%)8753(Top 155%)
24M24.00 mi1.00 mi18446+28011629+15011629+15012144(Top 43%)8250(Top 51%)8250(Top 146%)
40K24.85 mi0.85 mi18158+28811477+15211477+15210562(Top 37%)7347(Top 46%)7347(Top 130%)
25.2M25.20 mi0.35 mi18045+11311417+6011417+6010305(Top 36%)7129(Top 44%)7129(Top 126%)
Finish26.22 mi1.02 mi17748+29711265+15211265+1529980(Top 35%)6989(Top 43%)6989(Top 124%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21stories
+97ft-345ft

Overall

19425

Males

12236

M18-39

12236

5K→10K

3.1 - 6.2 mi

Top 74%
×5stories
+79ft-138ft

Overall

20891

Males

12870

M18-39

12870

10K→15K

6.2 - 9.3 mi

Top 68%
×3stories
+67ft-78ft

Overall

19425

Males

12236

M18-39

12236

15K→20K

9.3 - 12.4 mi

Top 67%
×5stories
+106ft-86ft

Overall

19077

Males

12062

M18-39

12062

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

18691

Males

11900

M18-39

11900

Half→25K

13.1 - 15.5 mi

Top 66%
×4stories
+66ft-88ft

Overall

18805

Males

11878

M18-39

11878

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

17641

Males

11211

M18-39

11211

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

16728

Males

10698

M18-39

10698

20M→21M

20.0 - 21.0 mi

Top 50%
×8stories
+106ft-24ft

Overall

14263

Males

9466

M18-39

9466

21M→35K

21.0 - 21.8 mi

Top 56%
×7stories
+17ft-86ft

Overall

15930

Males

10157

M18-39

10157

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

13102

Males

8753

M18-39

8753

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

12144

Males

8250

M18-39

8250

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

10562

Males

7347

M18-39

7347

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

10305

Males

7129

M18-39

7129

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2stories
+22ft-21ft

Overall

9980

Males

6989

M18-39

6989

Passing Analysis

Category:
Athletes Passed
5084
Passed By
180
Net Change
+4904
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22652
5K → 10K82843+785#22652#21867
10K → 15K83914+825#21867#21042
15K → 20K47417+457#21042#20585
20K → Half1029+93#20585#20492
Half → 25K31930+289#20492#20203
25K → 30K53929+510#20203#19693
30K → 20M22915+214#19693#19479
20M → 21M3043+301#19479#19178
21M → 35K12314+109#19178#19069
35K → 23M3430+343#19069#18726
23M → 24M2800+280#18726#18446
24M → 40K2891+288#18446#18158
40K → 25.2M1152+113#18158#18045
25.2M → Finish3003+297#18045#17748
TOTALS5084180+4904
📊

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