Boston Marathon logo
BOSTON MARATHON 2023

Keith Crouch

Bib: 6327•M

TN

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 18%
Gender (Male)
#0 / 15176
Top 30%
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
20:54
Rank: #3908
Start → 5K
20:54 | 6:44/mi
10K· 6.21 mi
42:03
Rank: #4668 (-760)
5K → 10K
21:09 | 6:48/mi
15K· 9.32 mi
1:03:12
Rank: #4811 (-143)
10K → 15K
21:09 | 6:48/mi
20K· 12.43 mi
1:24:23
Rank: #4738 (+73)
15K → 20K
21:11 | 6:49/mi
Half· 13.11 mi
1:28:55
Rank: #4680 (+58)
20K → Half
4:32 | 6:39/mi
25K· 15.53 mi
1:45:32
Rank: #4637 (+43)
Half → 25K
16:37 | 6:51/mi
30K· 18.64 mi
2:07:02
Rank: #4434 (+203)
25K → 30K
21:30 | 6:55/mi
20M
2:16:15
Rank: #4265 (+169)
30K → 20M
9:13 | 6:47/mi
21M
2:23:33
Rank: #4187 (+78)
20M → 21M
7:18 | 7:18/mi
35K· 21.75 mi
2:28:43
Rank: #4202 (-15)
21M → 35K
5:10 | 6:54/mi
23M
2:37:39
Rank: #4219 (-17)
35K → 23M
8:56 | 7:08/mi
24M
2:44:31
Rank: #4236 (-17)
23M → 24M
6:52 | 6:52/mi
40K· 24.85 mi
2:50:29
Rank: #4194 (+42)
24M → 40K
5:58 | 6:59/mi
25.2M
2:55:19
Rank: #4740 (-546)
40K → 25.2M
4:50 | 14:01/mi
Finish· 26.22 mi
3:03:09
Rank: #4863 (-123)
25.2M → Finish
7:50 | 7:41/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
Time1:28:55
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:34:14
Pace7:11 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:0520:546:4420:54
6:44
-
10K
6.21 mi10:47:1442:036:4621:09
6:48
+0:04
15K
9.32 mi11:08:231:03:126:4721:09
6:48
0:00
20K
12.43 mi11:29:341:24:236:4721:11
6:49
+0:01
Half
13.11 mi11:34:061:28:556:474:32
6:39
-0:10
25K
15.53 mi11:50:431:45:326:4816:37
6:51
+0:12
30K
18.64 mi12:12:132:07:026:4921:30
6:55
+0:04
20M
20.00 mi12:21:262:16:156:499:13
6:47
-0:08
21M
21.00 mi12:28:442:23:336:507:18
7:18
+0:31
35K
21.75 mi12:33:542:28:436:505:10
6:54
-0:24
23M
23.00 mi12:42:502:37:396:518:56
7:08
+0:14
24M
24.00 mi12:49:422:44:316:516:52
6:52
-0:16
40K
24.85 mi12:55:402:50:296:525:58
6:59
+0:07
25.2M
25.20 mi13:00:302:55:196:574:50
14:01
+7:02
Finish
26.22 mi13:08:203:03:096:597:50
7:41
-6:20

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

6:39 /mi

Average Pace

6:59 /mi

Slowest Pace

14:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:58:19

97% of race

Time at Slower Pace

4:50

3% of race

Average Pace: 6:59 /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 mi10:26:0520:546:4420:54
6:44
#3908
10K
6.21 mi10:47:1442:036:4621:09
6:48
#4668
15K
9.32 mi11:08:231:03:126:4721:09
6:48
#4811
20K
12.43 mi11:29:341:24:236:4721:11
6:49
#4738
Half
13.11 mi11:34:061:28:556:474:32
6:39
#4680
25K
15.53 mi11:50:431:45:326:4816:37
6:51
#4637
30K
18.64 mi12:12:132:07:026:4921:30
6:55
#4434
20M
20.00 mi12:21:262:16:156:499:13
6:47
#4265
21M
21.00 mi12:28:442:23:336:507:18
7:18
#4187
35K
21.75 mi12:33:542:28:436:505:10
6:54
#4202
23M
23.00 mi12:42:502:37:396:518:56
7:08
#4219
24M
24.00 mi12:49:422:44:316:516:52
6:52
#4236
40K
24.85 mi12:55:402:50:296:525:58
6:59
#4194
25.2M
25.20 mi13:00:302:55:196:574:50
14:01
#4740
Finish
26.22 mi13:08:203:03:096:597:50
7:41
#4863
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3908366936695196(Top 20%)4804(Top 32%)4804(Top 91%)
10K6.21 mi3.10 mi4668-7604353-6844353-6845368(Top 20%)4953(Top 33%)4953(Top 94%)
15K9.32 mi3.11 mi4811-1434475-1224475-1225196(Top 20%)4804(Top 32%)4804(Top 91%)
20K12.43 mi3.11 mi4738+734419+564419+564613(Top 17%)4298(Top 28%)4298(Top 81%)
Half13.11 mi0.68 mi4680+584367+524367+523867(Top 15%)3651(Top 24%)3651(Top 69%)
25K15.53 mi2.42 mi4637+434324+434324+434617(Top 17%)4296(Top 28%)4296(Top 81%)
30K18.64 mi3.11 mi4434+2034142+1824142+1823801(Top 14%)3565(Top 23%)3565(Top 67%)
20M20.00 mi1.36 mi4265+1693997+1453997+1452735(Top 10%)2589(Top 17%)2589(Top 49%)
21M21.00 mi1.00 mi4187+783922+753922+753627(Top 14%)3367(Top 22%)3367(Top 64%)
35K21.75 mi0.75 mi4202-153934-123934-124803(Top 18%)4339(Top 29%)4339(Top 82%)
23M23.00 mi1.25 mi4219-173948-143948-144483(Top 17%)4069(Top 27%)4069(Top 77%)
24M24.00 mi1.00 mi4236-173966-183966-184029(Top 15%)3677(Top 24%)3677(Top 70%)
40K24.85 mi0.85 mi4194+423923+433923+433740(Top 14%)3381(Top 22%)3381(Top 64%)
25.2M25.20 mi0.35 mi4740-5464390-4674390-46725009(Top 94%)14280(Top 94%)14280(Top 270%)
Finish26.22 mi1.02 mi4863-1234481-914481-919844(Top 37%)7189(Top 47%)7189(Top 136%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5196

Males

4804

M18-39

4804

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5368

Males

4953

M18-39

4953

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5196

Males

4804

M18-39

4804

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4613

Males

4298

M18-39

4298

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

3867

Males

3651

M18-39

3651

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4617

Males

4296

M18-39

4296

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3801

Males

3565

M18-39

3565

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2735

Males

2589

M18-39

2589

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

3627

Males

3367

M18-39

3367

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

4803

Males

4339

M18-39

4339

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4483

Males

4069

M18-39

4069

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

4029

Males

3677

M18-39

3677

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3740

Males

3381

M18-39

3381

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

25009

Males

14280

M18-39

14280

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2stories
+22ft-21ft

Overall

9844

Males

7189

M18-39

7189

Passing Analysis

Category:
Athletes Passed
1164
Passed By
2119
Net Change
-955
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3908
5K → 10K33793-760#3908#4668
10K → 15K66209-143#4668#4811
15K → 20K14269+73#4811#4738
20K → Half613+58#4738#4680
Half → 25K12481+43#4680#4637
25K → 30K23532+203#4637#4434
30K → 20M1778+169#4434#4265
20M → 21M10628+78#4265#4187
21M → 35K2742-15#4187#4202
35K → 23M5976-17#4202#4219
23M → 24M4360-17#4219#4236
24M → 40K7432+42#4236#4194
40K → 25.2M0546-546#4194#4740
25.2M → Finish17140-123#4740#4863
TOTALS11642119-955
📊

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