Boston Marathon logo
BOSTON MARATHON 2023

Jason Clarke

Bib: 6841•M

CO

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 31%
Gender (Male)
#0 / 15176
Top 45%
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
23:16
Rank: #9520
Start → 5K
23:16 | 7:29/mi
10K· 6.21 mi
46:00
Rank: #9198 (+322)
5K → 10K
22:44 | 7:19/mi
15K· 9.32 mi
1:09:07
Rank: #9316 (-118)
10K → 15K
23:07 | 7:26/mi
20K· 12.43 mi
1:32:29
Rank: #9338 (-22)
15K → 20K
23:22 | 7:31/mi
Half· 13.11 mi
1:37:27
Rank: #9282 (+56)
20K → Half
4:58 | 7:17/mi
25K· 15.53 mi
1:55:49
Rank: #9276 (+6)
Half → 25K
18:22 | 7:35/mi
30K· 18.64 mi
2:19:16
Rank: #8928 (+348)
25K → 30K
23:27 | 7:33/mi
20M
2:29:39
Rank: #8808 (+120)
30K → 20M
10:23 | 7:38/mi
21M
2:37:37
Rank: #8694 (+114)
20M → 21M
7:58 | 7:58/mi
35K· 21.75 mi
2:43:14
Rank: #8679 (+15)
21M → 35K
5:37 | 7:30/mi
23M
2:52:47
Rank: #8554 (+125)
35K → 23M
9:33 | 7:38/mi
24M
3:00:17
Rank: #8485 (+69)
23M → 24M
7:30 | 7:30/mi
40K· 24.85 mi
3:06:51
Rank: #8448 (+37)
24M → 40K
6:34 | 7:41/mi
25.2M
3:09:37
Rank: #8396 (+52)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
3:16:55
Rank: #8270 (+126)
25.2M → Finish
7:18 | 7:10/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
Time1:37:27
Pace7:26 /mi
2nd Half
Distance13.11 mi
Time1:39:28
Pace7:35 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:1823:167:2923:16
7:29
-
10K
6.21 mi10:49:0246:007:2422:44
7:19
-0:10
15K
9.32 mi11:12:091:09:077:2523:07
7:26
+0:07
20K
12.43 mi11:35:311:32:297:2723:22
7:31
+0:05
Half
13.11 mi11:40:291:37:277:264:58
7:17
-0:14
25K
15.53 mi11:58:511:55:497:2718:22
7:35
+0:18
30K
18.64 mi12:22:182:19:167:2823:27
7:33
-0:02
20M
20.00 mi12:32:412:29:397:2910:23
7:38
+0:05
21M
21.00 mi12:40:392:37:377:307:58
7:58
+0:20
35K
21.75 mi12:46:162:43:147:305:37
7:30
-0:28
23M
23.00 mi12:55:492:52:477:319:33
7:38
+0:08
24M
24.00 mi13:03:193:00:177:317:30
7:30
-0:08
40K
24.85 mi13:09:533:06:517:316:34
7:41
+0:11
25.2M
25.20 mi13:12:393:09:377:312:46
8:01
+0:20
Finish
26.22 mi13:19:573:16:557:317:18
7:10
-0:51

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

7:10 /mi

Average Pace

7:31 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:11

95% of race

Time at Steady Pace

10:44

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:31 /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 mi10:26:1823:167:2923:16
7:29
#9520
10K
6.21 mi10:49:0246:007:2422:44
7:19
#9198
15K
9.32 mi11:12:091:09:077:2523:07
7:26
#9316
20K
12.43 mi11:35:311:32:297:2723:22
7:31
#9338
Half
13.11 mi11:40:291:37:277:264:58
7:17
#9282
25K
15.53 mi11:58:511:55:497:2718:22
7:35
#9276
30K
18.64 mi12:22:182:19:167:2823:27
7:33
#8928
20M
20.00 mi12:32:412:29:397:2910:23
7:38
#8808
21M
21.00 mi12:40:392:37:377:307:58
7:58
#8694
35K
21.75 mi12:46:162:43:147:305:37
7:30
#8679
23M
23.00 mi12:55:492:52:477:319:33
7:38
#8554
24M
24.00 mi13:03:193:00:177:317:30
7:30
#8485
40K
24.85 mi13:09:533:06:517:316:34
7:41
#8448
25.2M
25.20 mi13:12:393:09:377:312:46
8:01
#8396
Finish
26.22 mi13:19:573:16:557:317:18
7:10
#8270
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi9520788178819669(Top 36%)7955(Top 52%)7955(Top 151%)
10K6.21 mi3.10 mi9198+3227690+1917690+1918963(Top 34%)7558(Top 50%)7558(Top 143%)
15K9.32 mi3.11 mi9316-1187756-667756-669669(Top 36%)7955(Top 52%)7955(Top 151%)
20K12.43 mi3.11 mi9338-227751+57751+59455(Top 36%)7768(Top 51%)7768(Top 147%)
Half13.11 mi0.68 mi9282+567719+327719+328410(Top 32%)7149(Top 47%)7149(Top 135%)
25K15.53 mi2.42 mi9276+67711+87711+89335(Top 35%)7623(Top 50%)7623(Top 144%)
30K18.64 mi3.11 mi8928+3487459+2527459+2527561(Top 28%)6429(Top 42%)6429(Top 122%)
20M20.00 mi1.36 mi8808+1207368+917368+917756(Top 29%)6441(Top 42%)6441(Top 122%)
21M21.00 mi1.00 mi8694+1147279+897279+897137(Top 27%)5953(Top 39%)5953(Top 113%)
35K21.75 mi0.75 mi8679+157252+277252+278563(Top 32%)6837(Top 45%)6837(Top 129%)
23M23.00 mi1.25 mi8554+1257152+1007152+1007258(Top 27%)5985(Top 39%)5985(Top 113%)
24M24.00 mi1.00 mi8485+697089+637089+637689(Top 29%)6127(Top 40%)6127(Top 116%)
40K24.85 mi0.85 mi8448+377045+447045+447819(Top 29%)6133(Top 40%)6133(Top 116%)
25.2M25.20 mi0.35 mi8396+527005+407005+406622(Top 25%)5348(Top 35%)5348(Top 101%)
Finish26.22 mi1.02 mi8270+1266900+1056900+1056186(Top 23%)5059(Top 33%)5059(Top 96%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

9669

Males

7955

M18-39

7955

5K→10K

3.1 - 6.2 mi

Top 34%
×5stories
+79ft-138ft

Overall

8963

Males

7558

M18-39

7558

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

9669

Males

7955

M18-39

7955

15K→20K

9.3 - 12.4 mi

Top 36%
×5stories
+106ft-86ft

Overall

9455

Males

7768

M18-39

7768

20K→Half

12.4 - 13.1 mi

Top 32%
×2stories
+19ft-37ft

Overall

8410

Males

7149

M18-39

7149

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9335

Males

7623

M18-39

7623

25K→30K

15.5 - 18.6 mi

Top 28%
×9stories
+181ft-148ft

Overall

7561

Males

6429

M18-39

6429

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

7756

Males

6441

M18-39

6441

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7137

Males

5953

M18-39

5953

21M→35K

21.0 - 21.8 mi

Top 32%
×7stories
+17ft-86ft

Overall

8563

Males

6837

M18-39

6837

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7258

Males

5985

M18-39

5985

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7689

Males

6127

M18-39

6127

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

7819

Males

6133

M18-39

6133

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6622

Males

5348

M18-39

5348

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6186

Males

5059

M18-39

5059

Passing Analysis

Category:
Athletes Passed
2124
Passed By
874
Net Change
+1250
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9520
5K → 10K467145+322#9520#9198
10K → 15K107225-118#9198#9316
15K → 20K141163-22#9316#9338
20K → Half648+56#9338#9282
Half → 25K116110+6#9282#9276
25K → 30K38133+348#9276#8928
30K → 20M13919+120#8928#8808
20M → 21M14026+114#8808#8694
21M → 35K5035+15#8694#8679
35K → 23M14621+125#8679#8554
23M → 24M9829+69#8554#8485
24M → 40K7740+37#8485#8448
40K → 25.2M564+52#8448#8396
25.2M → Finish14216+126#8396#8270
TOTALS2124874+1250
📊

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