Boston Marathon logo
BOSTON MARATHON 2025

Albert Serrano

Bib: 5547•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 45%
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
21:05
Rank: #6217
Start → 5K
21:05 | 6:47/mi
10K· 6.21 mi
42:40
Rank: #6908 (-691)
5K → 10K
21:35 | 6:57/mi
15K· 9.32 mi
1:04:39
Rank: #7353 (-445)
10K → 15K
21:59 | 7:05/mi
20K· 12.43 mi
1:27:33
Rank: #7797 (-444)
15K → 20K
22:54 | 7:22/mi
Half· 13.11 mi
1:32:25
Rank: #7825 (-28)
20K → Half
4:52 | 7:08/mi
25K· 15.53 mi
1:51:58
Rank: #8741 (-916)
Half → 25K
19:33 | 8:04/mi
30K· 18.64 mi
2:18:53
Rank: #10151 (-1410)
25K → 30K
26:55 | 8:40/mi
20M
2:31:04
Rank: #10719 (-568)
30K → 20M
12:11 | 8:58/mi
21M
2:41:35
Rank: #11413 (-694)
20M → 21M
10:31 | 10:31/mi
35K· 21.75 mi
2:48:12
Rank: #11694 (-281)
21M → 35K
6:37 | 8:51/mi
23M
2:59:58
Rank: #12161 (-467)
35K → 23M
11:46 | 9:24/mi
24M
3:09:14
Rank: #12521 (-360)
23M → 24M
9:16 | 9:16/mi
40K· 24.85 mi
3:17:10
Rank: #12755 (-234)
24M → 40K
7:56 | 9:17/mi
25.2M
3:20:51
Rank: #12923 (-168)
40K → 25.2M
3:41 | 10:41/mi
Finish· 26.22 mi
3:28:21
Rank: #12687 (+236)
25.2M → Finish
7:30 | 7:22/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:25
Pace7:03 /mi
2nd Half
Distance13.11 mi
Time1:55:56
Pace8:51 /mi
📊Positive Split: 25.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:3421:056:4721:05
6:47
-
10K
6.21 mi10:46:0942:406:5221:35
6:57
+0:10
15K
9.32 mi11:08:081:04:396:5621:59
7:05
+0:08
20K
12.43 mi11:31:021:27:337:0322:54
7:22
+0:17
Half
13.11 mi11:35:541:32:257:034:52
7:08
-0:14
25K
15.53 mi11:55:271:51:587:1219:33
8:04
+0:56
30K
18.64 mi12:22:222:18:537:2726:55
8:40
+0:36
20M
20.00 mi12:34:332:31:047:3312:11
8:58
+0:18
21M
21.00 mi12:45:042:41:357:4210:31
10:31
+1:33
35K
21.75 mi12:51:412:48:127:446:37
8:51
-1:40
23M
23.00 mi13:03:272:59:587:4911:46
9:24
+0:33
24M
24.00 mi13:12:433:09:147:539:16
9:16
-0:08
40K
24.85 mi13:20:393:17:107:567:56
9:17
+0:01
25.2M
25.20 mi13:24:203:20:517:583:41
10:41
+1:24
Finish
26.22 mi13:31:503:28:217:577:30
7:22
-3:19

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

7:57 /mi

Slowest Pace

10:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:55

48% of race

Time at Steady Pace

1:22:28

40% of race

Time at Slower Pace

25:58

12% of race

Average Pace: 7:57 /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 mi10:24:3421:056:4721:05
6:47
#6217
10K
6.21 mi10:46:0942:406:5221:35
6:57
#6908
15K
9.32 mi11:08:081:04:396:5621:59
7:05
#7353
20K
12.43 mi11:31:021:27:337:0322:54
7:22
#7797
Half
13.11 mi11:35:541:32:257:034:52
7:08
#7825
25K
15.53 mi11:55:271:51:587:1219:33
8:04
#8741
30K
18.64 mi12:22:222:18:537:2726:55
8:40
#10151
20M
20.00 mi12:34:332:31:047:3312:11
8:58
#10719
21M
21.00 mi12:45:042:41:357:4210:31
10:31
#11413
35K
21.75 mi12:51:412:48:127:446:37
8:51
#11694
23M
23.00 mi13:03:272:59:587:4911:46
9:24
#12161
24M
24.00 mi13:12:433:09:147:539:16
9:16
#12521
40K
24.85 mi13:20:393:17:107:567:56
9:17
#12755
25.2M
25.20 mi13:24:203:20:517:583:41
10:41
#12923
Finish
26.22 mi13:31:503:28:217:577:30
7:22
#12687
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6217569756978168(Top 29%)7049(Top 44%)7049(Top 125%)
10K6.21 mi3.10 mi6908-6916226-5296226-5297599(Top 27%)6716(Top 42%)6716(Top 119%)
15K9.32 mi3.11 mi7353-4456543-3176543-3178168(Top 29%)7049(Top 44%)7049(Top 125%)
20K12.43 mi3.11 mi7797-4446828-2856828-2859647(Top 34%)7819(Top 49%)7819(Top 139%)
Half13.11 mi0.68 mi7825-286844-166844-168562(Top 30%)7245(Top 45%)7245(Top 128%)
25K15.53 mi2.42 mi8741-9167386-5427386-54214349(Top 51%)9908(Top 62%)9908(Top 176%)
30K18.64 mi3.11 mi10151-14108083-6978083-69715778(Top 56%)10404(Top 65%)10404(Top 184%)
20M20.00 mi1.36 mi10719-5688324-2418324-24116582(Top 58%)10624(Top 66%)10624(Top 188%)
21M21.00 mi1.00 mi11413-6948616-2928616-29220044(Top 71%)12053(Top 75%)12053(Top 214%)
35K21.75 mi0.75 mi11694-2818734-1188734-11817432(Top 61%)10782(Top 67%)10782(Top 191%)
23M23.00 mi1.25 mi12161-4678913-1798913-17918211(Top 64%)11069(Top 69%)11069(Top 196%)
24M24.00 mi1.00 mi12521-3609059-1469059-14618631(Top 66%)11221(Top 70%)11221(Top 199%)
40K24.85 mi0.85 mi12755-2349129-709129-7017703(Top 62%)10674(Top 66%)10674(Top 189%)
25.2M25.20 mi0.35 mi12923-1689189-609189-6019593(Top 69%)11576(Top 72%)11576(Top 205%)
Finish26.22 mi1.02 mi12687+2369051+1389051+1388199(Top 29%)6032(Top 37%)6032(Top 107%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21stories
+97ft-345ft

Overall

8168

Males

7049

M18-39

7049

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

7599

Males

6716

M18-39

6716

10K→15K

6.2 - 9.3 mi

Top 29%
×3stories
+67ft-78ft

Overall

8168

Males

7049

M18-39

7049

15K→20K

9.3 - 12.4 mi

Top 34%
×5stories
+106ft-86ft

Overall

9647

Males

7819

M18-39

7819

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

8562

Males

7245

M18-39

7245

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

14349

Males

9908

M18-39

9908

25K→30K

15.5 - 18.6 mi

Top 56%
×9stories
+181ft-148ft

Overall

15778

Males

10404

M18-39

10404

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

16582

Males

10624

M18-39

10624

20M→21M

20.0 - 21.0 mi

Top 71%
×8stories
+106ft-24ft

Overall

20044

Males

12053

M18-39

12053

21M→35K

21.0 - 21.8 mi

Top 61%
×7stories
+17ft-86ft

Overall

17432

Males

10782

M18-39

10782

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

18211

Males

11069

M18-39

11069

23M→24M

23.0 - 24.0 mi

Top 66%
×6stories
+12ft-82ft

Overall

18631

Males

11221

M18-39

11221

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

17703

Males

10674

M18-39

10674

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19593

Males

11576

M18-39

11576

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2stories
+22ft-21ft

Overall

8199

Males

6032

M18-39

6032

Passing Analysis

Category:
Athletes Passed
599
Passed By
7067
Net Change
-6470
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6217
5K → 10K42733-691#6217#6908
10K → 15K45490-445#6908#7353
15K → 20K46490-444#7353#7797
20K → Half1947-28#7797#7825
Half → 25K17933-916#7825#8741
25K → 30K331441-1410#8741#10151
30K → 20M31599-568#10151#10719
20M → 21M11705-694#10719#11413
21M → 35K16297-281#11413#11694
35K → 23M40507-467#11694#12161
23M → 24M16376-360#12161#12521
24M → 40K34268-234#12521#12755
40K → 25.2M7175-168#12755#12923
25.2M → Finish2426+236#12923#12687
TOTALS5997067-6470
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing