Boston Marathon logo
BOSTON MARATHON 2025

David Perez Barbosa

Bib: 4775•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 10%
Gender (Male)
#0 / 16105
Top 16%
Division (M18-39)
#0 / 5642
Top 37%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:48
Rank: #2905
Start → 5K
19:48 | 6:22/mi
10K· 6.21 mi
39:43
Rank: #2998 (-93)
5K → 10K
19:55 | 6:25/mi
15K· 9.32 mi
59:45
Rank: #3071 (-73)
10K → 15K
20:02 | 6:27/mi
20K· 12.43 mi
1:20:12
Rank: #3181 (-110)
15K → 20K
20:27 | 6:35/mi
Half· 13.11 mi
1:24:43
Rank: #3243 (-62)
20K → Half
4:31 | 6:37/mi
25K· 15.53 mi
1:40:55
Rank: #3351 (-108)
Half → 25K
16:12 | 6:41/mi
30K· 18.64 mi
2:02:01
Rank: #3298 (+53)
25K → 30K
21:06 | 6:47/mi
20M
2:11:18
Rank: #3238 (+60)
30K → 20M
9:17 | 6:50/mi
21M
2:18:27
Rank: #3187 (+51)
20M → 21M
7:09 | 7:09/mi
35K· 21.75 mi
2:23:17
Rank: #3125 (+62)
21M → 35K
4:50 | 6:28/mi
23M
2:31:35
Rank: #2981 (+144)
35K → 23M
8:18 | 6:38/mi
24M
2:38:09
Rank: #2931 (+50)
23M → 24M
6:34 | 6:34/mi
40K· 24.85 mi
2:43:51
Rank: #2872 (+59)
24M → 40K
5:42 | 6:40/mi
25.2M
2:46:22
Rank: #2848 (+24)
40K → 25.2M
2:31 | 7:18/mi
Finish· 26.22 mi
2:52:51
Rank: #2789 (+59)
25.2M → Finish
6:29 | 6:22/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
Time1:24:43
Pace6:28 /mi
2nd Half
Distance13.11 mi
Time1:28:08
Pace6:43 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:5319:486:2219:48
6:22
-
10K
6.21 mi10:44:4839:436:2419:55
6:25
+0:03
15K
9.32 mi11:04:5059:456:2520:02
6:27
+0:02
20K
12.43 mi11:25:171:20:126:2720:27
6:35
+0:08
Half
13.11 mi11:29:481:24:436:284:31
6:37
+0:02
25K
15.53 mi11:46:001:40:556:3016:12
6:41
+0:04
30K
18.64 mi12:07:062:02:016:3321:06
6:47
+0:06
20M
20.00 mi12:16:232:11:186:349:17
6:50
+0:03
21M
21.00 mi12:23:322:18:276:367:09
7:09
+0:19
35K
21.75 mi12:28:222:23:176:354:50
6:28
-0:41
23M
23.00 mi12:36:402:31:356:358:18
6:38
+0:10
24M
24.00 mi12:43:142:38:096:356:34
6:34
-0:04
40K
24.85 mi12:48:562:43:516:365:42
6:40
+0:06
25.2M
25.20 mi12:51:272:46:226:362:31
7:18
+0:38
Finish
26.22 mi12:57:562:52:516:366:29
6:22
-0:56

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

6:22 /mi

Average Pace

6:36 /mi

Slowest Pace

7:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:11

94% of race

Time at Steady Pace

9:40

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:36 /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 mi10:24:5319:486:2219:48
6:22
#2905
10K
6.21 mi10:44:4839:436:2419:55
6:25
#2998
15K
9.32 mi11:04:5059:456:2520:02
6:27
#3071
20K
12.43 mi11:25:171:20:126:2720:27
6:35
#3181
Half
13.11 mi11:29:481:24:436:284:31
6:37
#3243
25K
15.53 mi11:46:001:40:556:3016:12
6:41
#3351
30K
18.64 mi12:07:062:02:016:3321:06
6:47
#3298
20M
20.00 mi12:16:232:11:186:349:17
6:50
#3238
21M
21.00 mi12:23:322:18:276:367:09
7:09
#3187
35K
21.75 mi12:28:222:23:176:354:50
6:28
#3125
23M
23.00 mi12:36:402:31:356:358:18
6:38
#2981
24M
24.00 mi12:43:142:38:096:356:34
6:34
#2931
40K
24.85 mi12:48:562:43:516:365:42
6:40
#2872
25.2M
25.20 mi12:51:272:46:226:362:31
7:18
#2848
Finish
26.22 mi12:57:562:52:516:366:29
6:22
#2789
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2905276427643224(Top 11%)3064(Top 19%)3064(Top 54%)
10K6.21 mi3.10 mi2998-932852-882852-883092(Top 11%)2941(Top 18%)2941(Top 52%)
15K9.32 mi3.11 mi3071-732924-722924-723224(Top 11%)3064(Top 19%)3064(Top 54%)
20K12.43 mi3.11 mi3181-1103029-1053029-1053578(Top 13%)3382(Top 21%)3382(Top 60%)
Half13.11 mi0.68 mi3243-623088-593088-594481(Top 16%)4174(Top 26%)4174(Top 74%)
25K15.53 mi2.42 mi3351-1083186-983186-983969(Top 14%)3701(Top 23%)3701(Top 66%)
30K18.64 mi3.11 mi3298+533124+623124+623378(Top 12%)3150(Top 20%)3150(Top 56%)
20M20.00 mi1.36 mi3238+603066+583066+583101(Top 11%)2877(Top 18%)2877(Top 51%)
21M21.00 mi1.00 mi3187+513018+483018+482877(Top 10%)2663(Top 17%)2663(Top 47%)
35K21.75 mi0.75 mi3125+622959+592959+592264(Top 8%)2116(Top 13%)2116(Top 38%)
23M23.00 mi1.25 mi2981+1442819+1402819+1401945(Top 7%)1816(Top 11%)1816(Top 32%)
24M24.00 mi1.00 mi2931+502772+472772+472326(Top 8%)2151(Top 13%)2151(Top 38%)
40K24.85 mi0.85 mi2872+592716+562716+562223(Top 8%)2038(Top 13%)2038(Top 36%)
25.2M25.20 mi0.35 mi2848+242694+222694+222464(Top 9%)2198(Top 14%)2198(Top 39%)
Finish26.22 mi1.02 mi2789+592639+552639+552136(Top 8%)1954(Top 12%)1954(Top 35%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

3224

Males

3064

M18-39

3064

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

3092

Males

2941

M18-39

2941

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

3224

Males

3064

M18-39

3064

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3578

Males

3382

M18-39

3382

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4481

Males

4174

M18-39

4174

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3969

Males

3701

M18-39

3701

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3378

Males

3150

M18-39

3150

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

3101

Males

2877

M18-39

2877

20M→21M

20.0 - 21.0 mi

Top 10%
×8stories
+106ft-24ft

Overall

2877

Males

2663

M18-39

2663

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2264

Males

2116

M18-39

2116

35K→23M

21.8 - 23.0 mi

Top 7%
×5stories
+23ft-63ft

Overall

1945

Males

1816

M18-39

1816

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2326

Males

2151

M18-39

2151

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2223

Males

2038

M18-39

2038

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2464

Males

2198

M18-39

2198

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2136

Males

1954

M18-39

1954

Passing Analysis

Category:
Athletes Passed
1011
Passed By
895
Net Change
+116
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2905
5K → 10K98191-93#2905#2998
10K → 15K63136-73#2998#3071
15K → 20K55165-110#3071#3181
20K → Half163-62#3181#3243
Half → 25K43151-108#3243#3351
25K → 30K13481+53#3351#3298
30K → 20M8222+60#3298#3238
20M → 21M8231+51#3238#3187
21M → 35K675+62#3187#3125
35K → 23M1539+144#3125#2981
23M → 24M6111+50#2981#2931
24M → 40K7213+59#2931#2872
40K → 25.2M328+24#2872#2848
25.2M → Finish689+59#2848#2789
TOTALS1011895+116
📊

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