Boston Marathon logo
BOSTON MARATHON 2023

George Visser

Bib: 7325•M

MI

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 10%
Gender (Male)
#0 / 15176
Top 17%
Division (M18-39)
#0 / 5285
Top 38%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:51
Rank: #3755
Start → 5K
20:51 | 6:43/mi
10K· 6.21 mi
41:26
Rank: #3668 (+87)
5K → 10K
20:35 | 6:38/mi
15K· 9.32 mi
1:02:12
Rank: #3742 (-74)
10K → 15K
20:46 | 6:41/mi
20K· 12.43 mi
1:22:56
Rank: #3622 (+120)
15K → 20K
20:44 | 6:40/mi
Half· 13.11 mi
1:27:24
Rank: #3585 (+37)
20K → Half
4:28 | 6:33/mi
25K· 15.53 mi
1:43:36
Rank: #3504 (+81)
Half → 25K
16:12 | 6:41/mi
30K· 18.64 mi
2:04:43
Rank: #3360 (+144)
25K → 30K
21:07 | 6:48/mi
20M
2:13:54
Rank: #3251 (+109)
30K → 20M
9:11 | 6:45/mi
21M
2:21:04
Rank: #3204 (+47)
20M → 21M
7:10 | 7:10/mi
35K· 21.75 mi
2:25:54
Rank: #3144 (+60)
21M → 35K
4:50 | 6:28/mi
23M
2:34:19
Rank: #3055 (+89)
35K → 23M
8:25 | 6:43/mi
24M
2:40:44
Rank: #2956 (+99)
23M → 24M
6:25 | 6:25/mi
40K· 24.85 mi
2:46:22
Rank: #2874 (+82)
24M → 40K
5:38 | 6:35/mi
25.2M
2:48:44
Rank: #2821 (+53)
40K → 25.2M
2:22 | 6:52/mi
Finish· 26.22 mi
2:55:12
Rank: #2743 (+78)
25.2M → Finish
6:28 | 6:21/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 Half⚖️ Balanced
Distance13.11 mi
Time1:27:24
Pace6:40 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:27:48
Pace6:42 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:5920:516:4320:51
6:43
-
10K
6.21 mi10:45:3441:266:4020:35
6:38
-0:05
15K
9.32 mi11:06:201:02:126:4020:46
6:41
+0:03
20K
12.43 mi11:27:041:22:566:4020:44
6:40
-0:01
Half
13.11 mi11:31:321:27:246:404:28
6:33
-0:07
25K
15.53 mi11:47:441:43:366:4016:12
6:41
+0:08
30K
18.64 mi12:08:512:04:436:4121:07
6:48
+0:07
20M
20.00 mi12:18:022:13:546:429:11
6:45
-0:03
21M
21.00 mi12:25:122:21:046:437:10
7:10
+0:25
35K
21.75 mi12:30:022:25:546:434:50
6:28
-0:42
23M
23.00 mi12:38:272:34:196:438:25
6:43
+0:15
24M
24.00 mi12:44:522:40:446:426:25
6:25
-0:18
40K
24.85 mi12:50:302:46:226:425:38
6:35
+0:10
25.2M
25.20 mi12:52:522:48:446:422:22
6:52
+0:17
Finish
26.22 mi12:59:202:55:126:416:28
6:21
-0:31

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

6:21 /mi

Average Pace

6:41 /mi

Slowest Pace

7:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:02

96% of race

Time at Steady Pace

7:10

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:41 /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 mi10:24:5920:516:4320:51
6:43
#3755
10K
6.21 mi10:45:3441:266:4020:35
6:38
#3668
15K
9.32 mi11:06:201:02:126:4020:46
6:41
#3742
20K
12.43 mi11:27:041:22:566:4020:44
6:40
#3622
Half
13.11 mi11:31:321:27:246:404:28
6:33
#3585
25K
15.53 mi11:47:441:43:366:4016:12
6:41
#3504
30K
18.64 mi12:08:512:04:436:4121:07
6:48
#3360
20M
20.00 mi12:18:022:13:546:429:11
6:45
#3251
21M
21.00 mi12:25:122:21:046:437:10
7:10
#3204
35K
21.75 mi12:30:022:25:546:434:50
6:28
#3144
23M
23.00 mi12:38:272:34:196:438:25
6:43
#3055
24M
24.00 mi12:44:522:40:446:426:25
6:25
#2956
40K
24.85 mi12:50:302:46:226:425:38
6:35
#2874
25.2M
25.20 mi12:52:522:48:446:422:22
6:52
#2821
Finish
26.22 mi12:59:202:55:126:416:28
6:21
#2743
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3755352935293953(Top 15%)3714(Top 24%)3714(Top 70%)
10K6.21 mi3.10 mi3668+873458+713458+713665(Top 14%)3461(Top 23%)3461(Top 65%)
15K9.32 mi3.11 mi3742-743531-733531-733953(Top 15%)3714(Top 24%)3714(Top 70%)
20K12.43 mi3.11 mi3622+1203428+1033428+1033350(Top 13%)3178(Top 21%)3178(Top 60%)
Half13.11 mi0.68 mi3585+373393+353393+353049(Top 11%)2914(Top 19%)2914(Top 55%)
25K15.53 mi2.42 mi3504+813324+693324+693220(Top 12%)3068(Top 20%)3068(Top 58%)
30K18.64 mi3.11 mi3360+1443186+1383186+1382954(Top 11%)2796(Top 18%)2796(Top 53%)
20M20.00 mi1.36 mi3251+1093084+1023084+1022563(Top 10%)2430(Top 16%)2430(Top 46%)
21M21.00 mi1.00 mi3204+473038+463038+462911(Top 11%)2728(Top 18%)2728(Top 52%)
35K21.75 mi0.75 mi3144+602982+562982+562247(Top 8%)2134(Top 14%)2134(Top 40%)
23M23.00 mi1.25 mi3055+892901+812901+812267(Top 9%)2138(Top 14%)2138(Top 40%)
24M24.00 mi1.00 mi2956+992808+932808+931757(Top 7%)1658(Top 11%)1658(Top 31%)
40K24.85 mi0.85 mi2874+822732+762732+761883(Top 7%)1774(Top 12%)1774(Top 34%)
25.2M25.20 mi0.35 mi2821+532681+512681+511354(Top 5%)1284(Top 8%)1284(Top 24%)
Finish26.22 mi1.02 mi2743+782609+722609+721815(Top 7%)1699(Top 11%)1699(Top 32%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

3953

Males

3714

M18-39

3714

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3665

Males

3461

M18-39

3461

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

3953

Males

3714

M18-39

3714

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3350

Males

3178

M18-39

3178

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

3049

Males

2914

M18-39

2914

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3220

Males

3068

M18-39

3068

25K→30K

15.5 - 18.6 mi

Top 11%
×9stories
+181ft-148ft

Overall

2954

Males

2796

M18-39

2796

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2563

Males

2430

M18-39

2430

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

2911

Males

2728

M18-39

2728

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2247

Males

2134

M18-39

2134

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2267

Males

2138

M18-39

2138

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1757

Males

1658

M18-39

1658

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1883

Males

1774

M18-39

1774

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1354

Males

1284

M18-39

1284

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

1815

Males

1699

M18-39

1699

Passing Analysis

Category:
Athletes Passed
1517
Passed By
505
Net Change
+1012
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3755
5K → 10K249162+87#3755#3668
10K → 15K84158-74#3668#3742
15K → 20K16343+120#3742#3622
20K → Half458+37#3622#3585
Half → 25K11433+81#3585#3504
25K → 30K17228+144#3504#3360
30K → 20M12516+109#3360#3251
20M → 21M6215+47#3251#3204
21M → 35K655+60#3204#3144
35K → 23M10516+89#3144#3055
23M → 24M1067+99#3055#2956
24M → 40K886+82#2956#2874
40K → 25.2M552+53#2874#2821
25.2M → Finish846+78#2821#2743
TOTALS1517505+1012
📊

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