Boston Marathon logo
BOSTON MARATHON 2023

Jose Carlos Barbosa

Bib: 29249•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:16
Rank: #19330
Start → 5K
27:16 | 8:47/mi
10K· 6.21 mi
53:29
Rank: #18560 (+770)
5K → 10K
26:13 | 8:26/mi
15K· 9.32 mi
1:19:56
Rank: #18335 (+225)
10K → 15K
26:27 | 8:31/mi
20K· 12.43 mi
1:47:21
Rank: #18440 (-105)
15K → 20K
27:25 | 8:49/mi
Half· 13.11 mi
1:53:23
Rank: #18506 (-66)
20K → Half
6:02 | 8:51/mi
25K· 15.53 mi
2:15:18
Rank: #18624 (-118)
Half → 25K
21:55 | 9:02/mi
30K· 18.64 mi
2:45:45
Rank: #19059 (-435)
25K → 30K
30:27 | 9:48/mi
20M
3:00:44
Rank: #19532 (-473)
30K → 20M
14:59 | 11:02/mi
21M
3:12:04
Rank: #19698 (-166)
20M → 21M
11:20 | 11:20/mi
35K· 21.75 mi
3:18:57
Rank: #19667 (+31)
21M → 35K
6:53 | 9:12/mi
23M
3:32:55
Rank: #19969 (-302)
35K → 23M
13:58 | 11:09/mi
24M
3:42:22
Rank: #19928 (+41)
23M → 24M
9:27 | 9:27/mi
40K· 24.85 mi
3:50:32
Rank: #19879 (+49)
24M → 40K
8:10 | 9:33/mi
25.2M
3:54:10
Rank: #19867 (+12)
40K → 25.2M
3:38 | 10:32/mi
Finish· 26.22 mi
4:04:15
Rank: #19939 (-72)
25.2M → Finish
10:05 | 9:54/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
Time1:53:23
Pace8:39 /mi
2nd Half
Distance13.11 mi
Time2:10:52
Pace9:59 /mi
📊Positive Split: 15.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:1527:168:4727:16
8:47
-
10K
6.21 mi12:16:2853:298:3626:13
8:26
-0:21
15K
9.32 mi12:42:551:19:568:3526:27
8:31
+0:05
20K
12.43 mi13:10:201:47:218:3827:25
8:49
+0:18
Half
13.11 mi13:16:221:53:238:396:02
8:51
+0:02
25K
15.53 mi13:38:172:15:188:4321:55
9:02
+0:11
30K
18.64 mi14:08:442:45:458:5330:27
9:48
+0:46
20M
20.00 mi14:23:433:00:449:0214:59
11:02
+1:14
21M
21.00 mi14:35:033:12:049:0911:20
11:20
+0:18
35K
21.75 mi14:41:563:18:579:096:53
9:12
-2:08
23M
23.00 mi14:55:543:32:559:1513:58
11:09
+1:57
24M
24.00 mi15:05:213:42:229:169:27
9:27
-1:42
40K
24.85 mi15:13:313:50:329:178:10
9:33
+0:06
25.2M
25.20 mi15:17:093:54:109:183:38
10:32
+0:59
Finish
26.22 mi15:27:144:04:159:1910:05
9:54
-0:38

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

8:26 /mi

Average Pace

9:19 /mi

Slowest Pace

11:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:23

46% of race

Time at Steady Pace

1:26:57

36% of race

Time at Slower Pace

43:55

18% of race

Average Pace: 9:19 /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 mi11:50:1527:168:4727:16
8:47
#19330
10K
6.21 mi12:16:2853:298:3626:13
8:26
#18560
15K
9.32 mi12:42:551:19:568:3526:27
8:31
#18335
20K
12.43 mi13:10:201:47:218:3827:25
8:49
#18440
Half
13.11 mi13:16:221:53:238:396:02
8:51
#18506
25K
15.53 mi13:38:172:15:188:4321:55
9:02
#18624
30K
18.64 mi14:08:442:45:458:5330:27
9:48
#19059
20M
20.00 mi14:23:433:00:449:0214:59
11:02
#19532
21M
21.00 mi14:35:033:12:049:0911:20
11:20
#19698
35K
21.75 mi14:41:563:18:579:096:53
9:12
#19667
23M
23.00 mi14:55:543:32:559:1513:58
11:09
#19969
24M
24.00 mi15:05:213:42:229:169:27
9:27
#19928
40K
24.85 mi15:13:313:50:329:178:10
9:33
#19879
25.2M
25.20 mi15:17:093:54:109:183:38
10:32
#19867
Finish
26.22 mi15:27:144:04:159:1910:05
9:54
#19939
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi19330119091190917899(Top 67%)11443(Top 75%)11443(Top 217%)
10K6.21 mi3.10 mi18560+77011679+23011679+23017846(Top 67%)11430(Top 75%)11430(Top 216%)
15K9.32 mi3.11 mi18335+22511605+7411605+7417899(Top 67%)11443(Top 75%)11443(Top 217%)
20K12.43 mi3.11 mi18440-10511648-4311648-4318807(Top 71%)11819(Top 78%)11819(Top 224%)
Half13.11 mi0.68 mi18506-6611681-3311681-3319697(Top 74%)12182(Top 80%)12182(Top 231%)
25K15.53 mi2.42 mi18624-11811698-1711698-1719156(Top 72%)11919(Top 79%)11919(Top 226%)
30K18.64 mi3.11 mi19059-43511866-16811866-16820443(Top 77%)12401(Top 82%)12401(Top 235%)
20M20.00 mi1.36 mi19532-47312040-17412040-17422741(Top 85%)13335(Top 88%)13335(Top 252%)
21M21.00 mi1.00 mi19698-16612111-7112111-7121543(Top 81%)12762(Top 84%)12762(Top 241%)
35K21.75 mi0.75 mi19667+3112092+1912092+1918730(Top 70%)11481(Top 76%)11481(Top 217%)
23M23.00 mi1.25 mi19969-30212199-10712199-10722639(Top 85%)13217(Top 87%)13217(Top 250%)
24M24.00 mi1.00 mi19928+4112177+2212177+2219029(Top 71%)11547(Top 76%)11547(Top 218%)
40K24.85 mi0.85 mi19879+4912148+2912148+2918495(Top 69%)11263(Top 74%)11263(Top 213%)
25.2M25.20 mi0.35 mi19867+1212140+812140+819194(Top 72%)11566(Top 76%)11566(Top 219%)
Finish26.22 mi1.02 mi19939-7212164-2412164-2421456(Top 81%)12616(Top 83%)12616(Top 239%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21stories
+97ft-345ft

Overall

17899

Males

11443

M18-39

11443

5K→10K

3.1 - 6.2 mi

Top 67%
×5stories
+79ft-138ft

Overall

17846

Males

11430

M18-39

11430

10K→15K

6.2 - 9.3 mi

Top 67%
×3stories
+67ft-78ft

Overall

17899

Males

11443

M18-39

11443

15K→20K

9.3 - 12.4 mi

Top 71%
×5stories
+106ft-86ft

Overall

18807

Males

11819

M18-39

11819

20K→Half

12.4 - 13.1 mi

Top 74%
×2stories
+19ft-37ft

Overall

19697

Males

12182

M18-39

12182

Half→25K

13.1 - 15.5 mi

Top 72%
×4stories
+66ft-88ft

Overall

19156

Males

11919

M18-39

11919

25K→30K

15.5 - 18.6 mi

Top 77%
×9stories
+181ft-148ft

Overall

20443

Males

12401

M18-39

12401

30K→20M

18.6 - 20.0 mi

Top 85%
×5stories
+64ft-50ft

Overall

22741

Males

13335

M18-39

13335

20M→21M

20.0 - 21.0 mi

Top 81%
×8stories
+106ft-24ft

Overall

21543

Males

12762

M18-39

12762

21M→35K

21.0 - 21.8 mi

Top 70%
×7stories
+17ft-86ft

Overall

18730

Males

11481

M18-39

11481

35K→23M

21.8 - 23.0 mi

Top 85%
×5stories
+23ft-63ft

Overall

22639

Males

13217

M18-39

13217

23M→24M

23.0 - 24.0 mi

Top 71%
×6stories
+12ft-82ft

Overall

19029

Males

11547

M18-39

11547

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

18495

Males

11263

M18-39

11263

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

19194

Males

11566

M18-39

11566

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2stories
+22ft-21ft

Overall

21456

Males

12616

M18-39

12616

Passing Analysis

Category:
Athletes Passed
1832
Passed By
2441
Net Change
-609
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19330
5K → 10K891121+770#19330#18560
10K → 15K30984+225#18560#18335
15K → 20K122227-105#18335#18440
20K → Half1278-66#18440#18506
Half → 25K100218-118#18506#18624
25K → 30K67502-435#18624#19059
30K → 20M18491-473#19059#19532
20M → 21M35201-166#19532#19698
21M → 35K5625+31#19698#19667
35K → 23M18320-302#19667#19969
23M → 24M7534+41#19969#19928
24M → 40K7627+49#19928#19879
40K → 25.2M3220+12#19879#19867
25.2M → Finish2193-72#19867#19939
TOTALS18322441-609
📊

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