Boston Marathon logo
BOSTON MARATHON 2023

Grant Gibson

Bib: 5572•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 22%
Division (M18-39)
#0 / 5285
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:46
Rank: #3519
Start → 5K
20:46 | 6:41/mi
10K· 6.21 mi
41:42
Rank: #4085 (-566)
5K → 10K
20:56 | 6:44/mi
15K· 9.32 mi
1:02:41
Rank: #4264 (-179)
10K → 15K
20:59 | 6:45/mi
20K· 12.43 mi
1:23:37
Rank: #4150 (+114)
15K → 20K
20:56 | 6:44/mi
Half· 13.11 mi
1:28:09
Rank: #4117 (+33)
20K → Half
4:32 | 6:39/mi
25K· 15.53 mi
1:44:33
Rank: #4054 (+63)
Half → 25K
16:24 | 6:46/mi
30K· 18.64 mi
2:06:05
Rank: #3978 (+76)
25K → 30K
21:32 | 6:56/mi
20M
2:15:29
Rank: #3907 (+71)
30K → 20M
9:24 | 6:55/mi
21M
2:22:40
Rank: #3796 (+111)
20M → 21M
7:11 | 7:11/mi
35K· 21.75 mi
2:27:37
Rank: #3763 (+33)
21M → 35K
4:57 | 6:37/mi
23M
2:36:22
Rank: #3735 (+28)
35K → 23M
8:45 | 6:59/mi
24M
2:43:10
Rank: #3714 (+21)
23M → 24M
6:48 | 6:48/mi
40K· 24.85 mi
2:49:02
Rank: #3654 (+60)
24M → 40K
5:52 | 6:52/mi
25.2M
2:51:32
Rank: #3630 (+24)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:58:09
Rank: #3537 (+93)
25.2M → Finish
6:37 | 6:30/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
Time1:28:09
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:30:00
Pace6:52 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:1620:466:4120:46
6:41
-
10K
6.21 mi11:07:1241:426:4320:56
6:44
+0:03
15K
9.32 mi11:28:111:02:416:4420:59
6:45
+0:01
20K
12.43 mi11:49:071:23:376:4420:56
6:44
-0:01
Half
13.11 mi11:53:391:28:096:434:32
6:39
-0:05
25K
15.53 mi12:10:031:44:336:4416:24
6:46
+0:07
30K
18.64 mi12:31:352:06:056:4621:32
6:56
+0:10
20M
20.00 mi12:40:592:15:296:469:24
6:55
-0:01
21M
21.00 mi12:48:102:22:406:487:11
7:11
+0:16
35K
21.75 mi12:53:072:27:376:474:57
6:37
-0:34
23M
23.00 mi13:01:522:36:226:488:45
6:59
+0:22
24M
24.00 mi13:08:402:43:106:486:48
6:48
-0:11
40K
24.85 mi13:14:322:49:026:485:52
6:52
+0:04
25.2M
25.20 mi13:17:022:51:326:482:30
7:15
+0:23
Finish
26.22 mi13:23:392:58:096:486:37
6:30
-0:45

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

6:30 /mi

Average Pace

6:48 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:28

95% of race

Time at Steady Pace

9:41

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:48 /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 mi10:46:1620:466:4120:46
6:41
#3519
10K
6.21 mi11:07:1241:426:4320:56
6:44
#4085
15K
9.32 mi11:28:111:02:416:4420:59
6:45
#4264
20K
12.43 mi11:49:071:23:376:4420:56
6:44
#4150
Half
13.11 mi11:53:391:28:096:434:32
6:39
#4117
25K
15.53 mi12:10:031:44:336:4416:24
6:46
#4054
30K
18.64 mi12:31:352:06:056:4621:32
6:56
#3978
20M
20.00 mi12:40:592:15:296:469:24
6:55
#3907
21M
21.00 mi12:48:102:22:406:487:11
7:11
#3796
35K
21.75 mi12:53:072:27:376:474:57
6:37
#3763
23M
23.00 mi13:01:522:36:226:488:45
6:59
#3735
24M
24.00 mi13:08:402:43:106:486:48
6:48
#3714
40K
24.85 mi13:14:322:49:026:485:52
6:52
#3654
25.2M
25.20 mi13:17:022:51:326:482:30
7:15
#3630
Finish
26.22 mi13:23:392:58:096:486:37
6:30
#3537
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3519331733174634(Top 17%)4327(Top 29%)4327(Top 82%)
10K6.21 mi3.10 mi4085-5663840-5233840-5234694(Top 18%)4367(Top 29%)4367(Top 83%)
15K9.32 mi3.11 mi4264-1793993-1533993-1534634(Top 17%)4327(Top 29%)4327(Top 82%)
20K12.43 mi3.11 mi4150+1143894+993894+993861(Top 15%)3641(Top 24%)3641(Top 69%)
Half13.11 mi0.68 mi4117+333862+323862+323780(Top 14%)3564(Top 23%)3564(Top 67%)
25K15.53 mi2.42 mi4054+633809+533809+533834(Top 14%)3606(Top 24%)3606(Top 68%)
30K18.64 mi3.11 mi3978+763745+643745+643869(Top 15%)3624(Top 24%)3624(Top 69%)
20M20.00 mi1.36 mi3907+713679+663679+663522(Top 13%)3287(Top 22%)3287(Top 62%)
21M21.00 mi1.00 mi3796+1113575+1043575+1043011(Top 11%)2822(Top 19%)2822(Top 53%)
35K21.75 mi0.75 mi3763+333546+293546+293101(Top 12%)2903(Top 19%)2903(Top 55%)
23M23.00 mi1.25 mi3735+283519+273519+273712(Top 14%)3426(Top 23%)3426(Top 65%)
24M24.00 mi1.00 mi3714+213496+233496+233635(Top 14%)3334(Top 22%)3334(Top 63%)
40K24.85 mi0.85 mi3654+603439+573439+573111(Top 12%)2855(Top 19%)2855(Top 54%)
25.2M25.20 mi0.35 mi3630+243417+223417+222730(Top 10%)2516(Top 17%)2516(Top 48%)
Finish26.22 mi1.02 mi3537+933330+873330+872448(Top 9%)2256(Top 15%)2256(Top 43%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4634

Males

4327

M18-39

4327

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4694

Males

4367

M18-39

4367

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4634

Males

4327

M18-39

4327

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

3861

Males

3641

M18-39

3641

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3780

Males

3564

M18-39

3564

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3834

Males

3606

M18-39

3606

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

3869

Males

3624

M18-39

3624

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3522

Males

3287

M18-39

3287

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

3011

Males

2822

M18-39

2822

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3101

Males

2903

M18-39

2903

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3712

Males

3426

M18-39

3426

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3635

Males

3334

M18-39

3334

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3111

Males

2855

M18-39

2855

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2730

Males

2516

M18-39

2516

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2448

Males

2256

M18-39

2256

Passing Analysis

Category:
Athletes Passed
1186
Passed By
1204
Net Change
-18
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3519
5K → 10K46612-566#3519#4085
10K → 15K70249-179#4085#4264
15K → 20K15440+114#4264#4150
20K → Half407+33#4150#4117
Half → 25K10643+63#4117#4054
25K → 30K14973+76#4054#3978
30K → 20M9524+71#3978#3907
20M → 21M12918+111#3907#3796
21M → 35K4310+33#3796#3763
35K → 23M7850+28#3763#3735
23M → 24M5534+21#3735#3714
24M → 40K7616+60#3714#3654
40K → 25.2M3511+24#3654#3630
25.2M → Finish11017+93#3630#3537
TOTALS11861204-18
📊

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