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BOSTON MARATHON 2025

Eric Serrano

Bib: 12633•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
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
8:57/mi
27:47
↑ 97↓ 3451.5%
10K· 6.21 mi
9:45/mi
58:03
↑ 79↓ 1380.4%
15K· 9.32 mi
9:22/mi
1:27:09
↑ 67↓ 78
20K· 12.43 mi
9:23/mi
1:56:19
↑ 106↓ 860.1%
Half· 13.11 mi
8:51/mi
2:02:21
↑ 19↓ 370.5%
25K· 15.53 mi
9:51/mi
2:26:15
↑ 66↓ 880.2%
30K· 18.64 mi
10:30/mi
2:58:53
↑ 181↓ 1480.2%
20M
10:31/mi
3:13:10
↑ 64↓ 500.2%
21M
11:15/mi
3:24:25
↑ 106↓ 241.6%
35K· 21.75 mi
10:01/mi
3:31:55
↑ 17↓ 861.7%
23M
11:02/mi
3:45:44
↑ 23↓ 630.6%
24M
10:16/mi
3:56:00
↓ 821.3%
40K· 24.85 mi
9:18/mi
4:03:57
↓ 200.3%
25.2M
9:37/mi
4:07:16
↑ 13↓ 160.2%
Finish· 26.22 mi
8:39/mi
4:16:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:02:21
Pace9:20 /mi
2nd Half
Distance13.11 mi
Time2:13:44
Pace10:12 /mi
📊Positive Split: 9.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:2327:478:5727:47
8:57
-
10K
6.21 mi11:26:3958:039:2130:16
9:45
+0:48
15K
9.32 mi11:55:451:27:099:2129:06
9:22
-0:23
20K
12.43 mi12:24:551:56:199:2229:10
9:23
+0:01
Half
13.11 mi12:30:572:02:219:206:02
8:51
-0:32
25K
15.53 mi12:54:512:26:159:2523:54
9:51
+1:00
30K
18.64 mi13:27:292:58:539:3632:38
10:30
+0:39
20M
20.00 mi13:41:463:13:109:3914:17
10:31
+0:01
21M
21.00 mi13:53:013:24:259:4411:15
11:15
+0:44
35K
21.75 mi14:00:313:31:559:457:30
10:01
-1:14
23M
23.00 mi14:14:203:45:449:4913:49
11:02
+1:01
24M
24.00 mi14:24:363:56:009:5010:16
10:16
-0:46
40K
24.85 mi14:32:334:03:579:497:57
9:18
-0:58
25.2M
25.20 mi14:35:524:07:169:493:19
9:37
+0:19
Finish
26.22 mi14:44:414:16:059:468:49
8:39
-0:58

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

8:39 /mi

Average Pace

9:46 /mi

Slowest Pace

11:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:19:41

31% of race

Time at Steady Pace

1:34:09

37% of race

Time at Slower Pace

1:22:15

32% of race

Average Pace: 9:46 /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 mi10:56:2327:478:5727:47
8:57
#22175
10K
6.21 mi11:26:3958:039:2130:16
9:45
#23700
15K
9.32 mi11:55:451:27:099:2129:06
9:22
#23600
20K
12.43 mi12:24:551:56:199:2229:10
9:23
#23312
Half
13.11 mi12:30:572:02:219:206:02
8:51
#23228
25K
15.53 mi12:54:512:26:159:2523:54
9:51
#23164
30K
18.64 mi13:27:292:58:539:3632:38
10:30
#23079
20M
20.00 mi13:41:463:13:109:3914:17
10:31
#23022
21M
21.00 mi13:53:013:24:259:4411:15
11:15
#22962
35K
21.75 mi14:00:313:31:559:457:30
10:01
#22923
23M
23.00 mi14:14:203:45:449:4913:49
11:02
#22934
24M
24.00 mi14:24:363:56:009:5010:16
10:16
#22886
40K
24.85 mi14:32:334:03:579:497:57
9:18
#22714
25.2M
25.20 mi14:35:524:07:169:493:19
9:37
#22635
Finish
26.22 mi14:44:414:16:059:468:49
8:39
#22487
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi22175133911339123379(Top 82%)14010(Top 87%)14010(Top 587%)
10K6.21 mi3.10 mi23700-152514109-71814109-71824711(Top 87%)14573(Top 90%)14573(Top 611%)
15K9.32 mi3.11 mi23600+10014076+3314076+3323379(Top 82%)14010(Top 87%)14010(Top 587%)
20K12.43 mi3.11 mi23312+28813959+11713959+11722530(Top 79%)13589(Top 84%)13589(Top 570%)
Half13.11 mi0.68 mi23228+8413919+4013919+4021112(Top 74%)12962(Top 80%)12962(Top 543%)
25K15.53 mi2.42 mi23164+6413877+4213877+4222912(Top 81%)13707(Top 85%)13707(Top 574%)
30K18.64 mi3.11 mi23079+8513789+8813789+8822947(Top 81%)13595(Top 84%)13595(Top 570%)
20M20.00 mi1.36 mi23022+5713737+5213737+5222443(Top 79%)13255(Top 82%)13255(Top 556%)
21M21.00 mi1.00 mi22962+6013695+4213695+4222031(Top 78%)12993(Top 81%)12993(Top 545%)
35K21.75 mi0.75 mi22923+3913662+3313662+3321959(Top 77%)12885(Top 80%)12885(Top 540%)
23M23.00 mi1.25 mi22934-1113642+2013642+2023298(Top 82%)13474(Top 84%)13474(Top 565%)
24M24.00 mi1.00 mi22886+4813599+4313599+4322125(Top 78%)12870(Top 80%)12870(Top 539%)
40K24.85 mi0.85 mi22714+17213508+9113508+9117849(Top 63%)10754(Top 67%)10754(Top 451%)
25.2M25.20 mi0.35 mi22635+7913454+5413454+5415176(Top 53%)9515(Top 59%)9515(Top 399%)
Finish26.22 mi1.02 mi22487+14813376+7813376+7817182(Top 60%)10492(Top 65%)10492(Top 440%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21story building
+97ft-345ft

Overall

23379

Males

14010

M45-49

14010

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

24711

Males

14573

M45-49

14573

10K→15K

6.2 - 9.3 mi

Top 82%
×3story building
+67ft-78ft

Overall

23379

Males

14010

M45-49

14010

15K→20K

9.3 - 12.4 mi

Top 79%
×5story building
+106ft-86ft

Overall

22530

Males

13589

M45-49

13589

20K→Half

12.4 - 13.1 mi

Top 74%
×2story building
+19ft-37ft

Overall

21112

Males

12962

M45-49

12962

Half→25K

13.1 - 15.5 mi

Top 81%
×4story building
+66ft-88ft

Overall

22912

Males

13707

M45-49

13707

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

22947

Males

13595

M45-49

13595

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

22443

Males

13255

M45-49

13255

20M→21M

20.0 - 21.0 mi

Top 78%
×8story building
+106ft-24ft

Overall

22031

Males

12993

M45-49

12993

21M→35K

21.0 - 21.8 mi

Top 77%
×7story building
+17ft-86ft

Overall

21959

Males

12885

M45-49

12885

35K→23M

21.8 - 23.0 mi

Top 82%
×5story building
+23ft-63ft

Overall

23298

Males

13474

M45-49

13474

23M→24M

23.0 - 24.0 mi

Top 78%
×6story building
+12ft-82ft

Overall

22125

Males

12870

M45-49

12870

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

17849

Males

10754

M45-49

10754

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

15176

Males

9515

M45-49

9515

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

17182

Males

10492

M45-49

10492

Passing Analysis

Category:
Athletes Passed
1819
Passed By
2131
Net Change
-312
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22175
5K → 10K141539-1525#22175#23700
10K → 15K215115+100#23700#23600
15K → 20K32335+288#23600#23312
20K → Half884+84#23312#23228
Half → 25K15591+64#23228#23164
25K → 30K206121+85#23164#23079
30K → 20M9942+57#23079#23022
20M → 21M10040+60#23022#22962
21M → 35K6425+39#22962#22923
35K → 23M6879-11#22923#22934
23M → 24M8335+48#22934#22886
24M → 40K1731+172#22886#22714
40K → 25.2M812+79#22714#22635
25.2M → Finish1502+148#22635#22487
TOTALS18192131-312
📊

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