Boston Marathon logo
BOSTON MARATHON 2023

William Clarke

Bib: 2872•M

AB

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 6%
Gender (Male)
#0 / 15176
Top 10%
Division (M18-39)
#0 / 5285
Top 22%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:07
Rank: #2138
Start → 5K
20:07 | 6:28/mi
10K· 6.21 mi
39:50
Rank: #2034 (+104)
5K → 10K
19:43 | 6:21/mi
15K· 9.32 mi
59:47
Rank: #2071 (-37)
10K → 15K
19:57 | 6:25/mi
20K· 12.43 mi
1:19:46
Rank: #2023 (+48)
15K → 20K
19:59 | 6:26/mi
Half· 13.11 mi
1:24:05
Rank: #2007 (+16)
20K → Half
4:19 | 6:20/mi
25K· 15.53 mi
1:39:45
Rank: #1993 (+14)
Half → 25K
15:40 | 6:28/mi
30K· 18.64 mi
1:59:51
Rank: #1869 (+124)
25K → 30K
20:06 | 6:28/mi
20M
2:08:28
Rank: #1757 (+112)
30K → 20M
8:37 | 6:20/mi
21M
2:15:11
Rank: #1710 (+47)
20M → 21M
6:43 | 6:43/mi
35K· 21.75 mi
2:19:54
Rank: #1694 (+16)
21M → 35K
4:43 | 6:18/mi
23M
2:27:59
Rank: #1659 (+35)
35K → 23M
8:05 | 6:27/mi
24M
2:34:16
Rank: #1619 (+40)
23M → 24M
6:17 | 6:17/mi
40K· 24.85 mi
2:39:43
Rank: #1580 (+39)
24M → 40K
5:27 | 6:22/mi
25.2M
2:42:04
Rank: #1564 (+16)
40K → 25.2M
2:21 | 6:49/mi
Finish· 26.22 mi
2:48:18
Rank: #1518 (+46)
25.2M → Finish
6:14 | 6:07/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
Time1:24:05
Pace6:25 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:24:13
Pace6:25 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:1420:076:2820:07
6:28
-
10K
6.21 mi10:40:5739:506:2519:43
6:21
-0:07
15K
9.32 mi11:00:5459:476:2519:57
6:25
+0:04
20K
12.43 mi11:20:531:19:466:2519:59
6:26
+0:01
Half
13.11 mi11:25:121:24:056:254:19
6:20
-0:06
25K
15.53 mi11:40:521:39:456:2515:40
6:28
+0:08
30K
18.64 mi12:00:581:59:516:2620:06
6:28
0:00
20M
20.00 mi12:09:352:08:286:258:37
6:20
-0:08
21M
21.00 mi12:16:182:15:116:266:43
6:43
+0:23
35K
21.75 mi12:21:012:19:546:264:43
6:18
-0:25
23M
23.00 mi12:29:062:27:596:268:05
6:27
+0:09
24M
24.00 mi12:35:232:34:166:266:17
6:17
-0:10
40K
24.85 mi12:40:502:39:436:265:27
6:22
+0:05
25.2M
25.20 mi12:43:112:42:046:262:21
6:49
+0:27
Finish
26.22 mi12:49:252:48:186:256:14
6:07
-0:42

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

6:07 /mi

Average Pace

6:25 /mi

Slowest Pace

6:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:45:57

99% of race

Time at Steady Pace

2:21

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:25 /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 mi10:21:1420:076:2820:07
6:28
#2138
10K
6.21 mi10:40:5739:506:2519:43
6:21
#2034
15K
9.32 mi11:00:5459:476:2519:57
6:25
#2071
20K
12.43 mi11:20:531:19:466:2519:59
6:26
#2023
Half
13.11 mi11:25:121:24:056:254:19
6:20
#2007
25K
15.53 mi11:40:521:39:456:2515:40
6:28
#1993
30K
18.64 mi12:00:581:59:516:2620:06
6:28
#1869
20M
20.00 mi12:09:352:08:286:258:37
6:20
#1757
21M
21.00 mi12:16:182:15:116:266:43
6:43
#1710
35K
21.75 mi12:21:012:19:546:264:43
6:18
#1694
23M
23.00 mi12:29:062:27:596:268:05
6:27
#1659
24M
24.00 mi12:35:232:34:166:266:17
6:17
#1619
40K
24.85 mi12:40:502:39:436:265:27
6:22
#1580
25.2M
25.20 mi12:43:112:42:046:262:21
6:49
#1564
Finish
26.22 mi12:49:252:48:186:256:14
6:07
#1518
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2138203820382203(Top 8%)2112(Top 14%)2112(Top 40%)
10K6.21 mi3.10 mi2034+1041950+881950+881955(Top 7%)1872(Top 12%)1872(Top 35%)
15K9.32 mi3.11 mi2071-371985-351985-352203(Top 8%)2112(Top 14%)2112(Top 40%)
20K12.43 mi3.11 mi2023+481936+491936+491928(Top 7%)1850(Top 12%)1850(Top 35%)
Half13.11 mi0.68 mi2007+161923+131923+131855(Top 7%)1780(Top 12%)1780(Top 34%)
25K15.53 mi2.42 mi1993+141910+131910+131987(Top 7%)1902(Top 13%)1902(Top 36%)
30K18.64 mi3.11 mi1869+1241788+1221788+1221453(Top 5%)1389(Top 9%)1389(Top 26%)
20M20.00 mi1.36 mi1757+1121680+1081680+108983(Top 4%)940(Top 6%)940(Top 18%)
21M21.00 mi1.00 mi1710+471636+441636+441145(Top 4%)1091(Top 7%)1091(Top 21%)
35K21.75 mi0.75 mi1694+161621+151621+151581(Top 6%)1501(Top 10%)1501(Top 28%)
23M23.00 mi1.25 mi1659+351586+351586+351290(Top 5%)1221(Top 8%)1221(Top 23%)
24M24.00 mi1.00 mi1619+401548+381548+381304(Top 5%)1234(Top 8%)1234(Top 23%)
40K24.85 mi0.85 mi1580+391510+381510+381129(Top 4%)1068(Top 7%)1068(Top 20%)
25.2M25.20 mi0.35 mi1564+161494+161494+161199(Top 5%)1138(Top 7%)1138(Top 22%)
Finish26.22 mi1.02 mi1518+461451+431451+431038(Top 4%)987(Top 7%)987(Top 19%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2203

Males

2112

M18-39

2112

5K→10K

3.1 - 6.2 mi

Top 7%
×5stories
+79ft-138ft

Overall

1955

Males

1872

M18-39

1872

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2203

Males

2112

M18-39

2112

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1928

Males

1850

M18-39

1850

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1855

Males

1780

M18-39

1780

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1987

Males

1902

M18-39

1902

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1453

Males

1389

M18-39

1389

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

983

Males

940

M18-39

940

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

1145

Males

1091

M18-39

1091

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1581

Males

1501

M18-39

1501

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1290

Males

1221

M18-39

1221

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1304

Males

1234

M18-39

1234

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1129

Males

1068

M18-39

1068

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1199

Males

1138

M18-39

1138

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

1038

Males

987

M18-39

987

Passing Analysis

Category:
Athletes Passed
908
Passed By
288
Net Change
+620
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2138
5K → 10K17369+104#2138#2034
10K → 15K5087-37#2034#2071
15K → 20K7931+48#2071#2023
20K → Half204+16#2023#2007
Half → 25K5137+14#2007#1993
25K → 30K13713+124#1993#1869
30K → 20M1131+112#1869#1757
20M → 21M536+47#1757#1710
21M → 35K226+16#1710#1694
35K → 23M4914+35#1694#1659
23M → 24M5313+40#1659#1619
24M → 40K434+39#1619#1580
40K → 25.2M182+16#1580#1564
25.2M → Finish471+46#1564#1518
TOTALS908288+620
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

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