Boston Marathon logo
BOSTON MARATHON 2024

Alejandro Rosario Carrera

Bib: 4385•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 25550
Top 16%
Gender (Male)
#0 / 14578
Top 26%
Division (M18-39)
#0 / 4849
Top 49%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:50
Rank: #2591
Start → 5K
19:50 | 6:23/mi
10K· 6.21 mi
40:02
Rank: #2778 (-187)
5K → 10K
20:12 | 6:30/mi
15K· 9.32 mi
1:00:29
Rank: #2885 (-107)
10K → 15K
20:27 | 6:35/mi
20K· 12.43 mi
1:21:42
Rank: #3119 (-234)
15K → 20K
21:13 | 6:50/mi
Half· 13.11 mi
1:26:21
Rank: #3161 (-42)
20K → Half
4:39 | 6:49/mi
25K· 15.53 mi
1:43:57
Rank: #3580 (-419)
Half → 25K
17:36 | 7:16/mi
30K· 18.64 mi
2:09:00
Rank: #4546 (-966)
25K → 30K
25:03 | 8:04/mi
20M
2:19:18
Rank: #4493 (+53)
30K → 20M
10:18 | 7:35/mi
21M
2:28:01
Rank: #4585 (-92)
20M → 21M
8:43 | 8:43/mi
35K· 21.75 mi
2:33:22
Rank: #4481 (+104)
21M → 35K
5:21 | 7:09/mi
23M
2:42:47
Rank: #4329 (+152)
35K → 23M
9:25 | 7:31/mi
24M
2:50:35
Rank: #4313 (+16)
23M → 24M
7:48 | 7:48/mi
40K· 24.85 mi
2:57:01
Rank: #4205 (+108)
24M → 40K
6:26 | 7:31/mi
25.2M
3:00:11
Rank: #4221 (-16)
40K → 25.2M
3:10 | 9:11/mi
Finish· 26.22 mi
3:07:38
Rank: #4176 (+45)
25.2M → Finish
7:27 | 7:19/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
Time1:26:21
Pace6:35 /mi
2nd Half
Distance13.11 mi
Time1:41:17
Pace7:44 /mi
📊Positive Split: 17.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:2819:506:2319:50
6:23
-
10K
6.21 mi10:42:4040:026:2720:12
6:30
+0:07
15K
9.32 mi11:03:071:00:296:2920:27
6:35
+0:05
20K
12.43 mi11:24:201:21:426:3421:13
6:50
+0:15
Half
13.11 mi11:28:591:26:216:354:39
6:49
-0:01
25K
15.53 mi11:46:351:43:576:4117:36
7:16
+0:27
30K
18.64 mi12:11:382:09:006:5525:03
8:04
+0:48
20M
20.00 mi12:21:562:19:186:5810:18
7:35
-0:29
21M
21.00 mi12:30:392:28:017:038:43
8:43
+1:08
35K
21.75 mi12:36:002:33:227:035:21
7:09
-1:34
23M
23.00 mi12:45:252:42:477:059:25
7:31
+0:22
24M
24.00 mi12:53:132:50:357:067:48
7:48
+0:17
40K
24.85 mi12:59:392:57:017:076:26
7:31
-0:17
25.2M
25.20 mi13:02:493:00:117:093:10
9:11
+1:40
Finish
26.22 mi13:10:163:07:387:107:27
7:19
-1:52

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

6:23 /mi

Average Pace

7:10 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:21

46% of race

Time at Steady Pace

56:33

30% of race

Time at Slower Pace

44:44

24% of race

Average Pace: 7:09 /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 mi10:22:2819:506:2319:50
6:23
#2591
10K
6.21 mi10:42:4040:026:2720:12
6:30
#2778
15K
9.32 mi11:03:071:00:296:2920:27
6:35
#2885
20K
12.43 mi11:24:201:21:426:3421:13
6:50
#3119
Half
13.11 mi11:28:591:26:216:354:39
6:49
#3161
25K
15.53 mi11:46:351:43:576:4117:36
7:16
#3580
30K
18.64 mi12:11:382:09:006:5525:03
8:04
#4546
20M
20.00 mi12:21:562:19:186:5810:18
7:35
#4493
21M
21.00 mi12:30:392:28:017:038:43
8:43
#4585
35K
21.75 mi12:36:002:33:227:035:21
7:09
#4481
23M
23.00 mi12:45:252:42:477:059:25
7:31
#4329
24M
24.00 mi12:53:132:50:357:067:48
7:48
#4313
40K
24.85 mi12:59:392:57:017:076:26
7:31
#4205
25.2M
25.20 mi13:02:493:00:117:093:10
9:11
#4221
Finish
26.22 mi13:10:163:07:387:107:27
7:19
#4176
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2591249424943164(Top 12%)3014(Top 21%)3014(Top 62%)
10K6.21 mi3.10 mi2778-1872665-1712665-1713015(Top 12%)2876(Top 20%)2876(Top 59%)
15K9.32 mi3.11 mi2885-1072762-972762-973164(Top 12%)3014(Top 21%)3014(Top 62%)
20K12.43 mi3.11 mi3119-2342975-2132975-2134091(Top 16%)3818(Top 26%)3818(Top 79%)
Half13.11 mi0.68 mi3161-423014-393014-394595(Top 18%)4233(Top 29%)4233(Top 87%)
25K15.53 mi2.42 mi3580-4193393-3793393-3795592(Top 22%)4900(Top 34%)4900(Top 101%)
30K18.64 mi3.11 mi4546-9664193-8004193-8008224(Top 32%)6336(Top 43%)6336(Top 131%)
20M20.00 mi1.36 mi4493+534134+594134+594630(Top 18%)3995(Top 27%)3995(Top 82%)
21M21.00 mi1.00 mi4585-924194-604194-607196(Top 28%)5360(Top 37%)5360(Top 111%)
35K21.75 mi0.75 mi4481+1044097+974097+973612(Top 14%)3187(Top 22%)3187(Top 66%)
23M23.00 mi1.25 mi4329+1523945+1523945+1523705(Top 15%)3178(Top 22%)3178(Top 66%)
24M24.00 mi1.00 mi4313+163909+363909+365532(Top 22%)4194(Top 29%)4194(Top 86%)
40K24.85 mi0.85 mi4205+1083803+1063803+1063595(Top 14%)2950(Top 20%)2950(Top 61%)
25.2M25.20 mi0.35 mi4221-163805-23805-27311(Top 29%)4937(Top 34%)4937(Top 102%)
Finish26.22 mi1.02 mi4176+453747+583747+584566(Top 18%)3551(Top 24%)3551(Top 73%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3164

Males

3014

M18-39

3014

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3015

Males

2876

M18-39

2876

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3164

Males

3014

M18-39

3014

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4091

Males

3818

M18-39

3818

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

4595

Males

4233

M18-39

4233

Half→25K

13.1 - 15.5 mi

Top 22%
×4stories
+66ft-88ft

Overall

5592

Males

4900

M18-39

4900

25K→30K

15.5 - 18.6 mi

Top 32%
×9stories
+181ft-148ft

Overall

8224

Males

6336

M18-39

6336

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

4630

Males

3995

M18-39

3995

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

7196

Males

5360

M18-39

5360

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3612

Males

3187

M18-39

3187

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

3705

Males

3178

M18-39

3178

23M→24M

23.0 - 24.0 mi

Top 22%
×6stories
+12ft-82ft

Overall

5532

Males

4194

M18-39

4194

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3595

Males

2950

M18-39

2950

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7311

Males

4937

M18-39

4937

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2stories
+22ft-21ft

Overall

4566

Males

3551

M18-39

3551

Passing Analysis

Category:
Athletes Passed
1048
Passed By
2633
Net Change
-1585
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2591
5K → 10K76263-187#2591#2778
10K → 15K70177-107#2778#2885
15K → 20K57291-234#2885#3119
20K → Half648-42#3119#3161
Half → 25K44463-419#3161#3580
25K → 30K32998-966#3580#4546
30K → 20M11764+53#4546#4493
20M → 21M54146-92#4493#4585
21M → 35K11713+104#4585#4481
35K → 23M17624+152#4481#4329
23M → 24M8872+16#4329#4313
24M → 40K12315+108#4313#4205
40K → 25.2M1733-16#4205#4221
25.2M → Finish7126+45#4221#4176
TOTALS10482633-1585
📊

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