Boston Marathon logo
BOSTON MARATHON 2023

Bryan Clark

Bib: 4663•M

OR

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 17%
Gender (Male)
#0 / 15176
Top 27%
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
20:59
Rank: #4184
Start → 5K
20:59 | 6:45/mi
10K· 6.21 mi
41:19
Rank: #3530 (+654)
5K → 10K
20:20 | 6:33/mi
15K· 9.32 mi
1:02:08
Rank: #3679 (-149)
10K → 15K
20:49 | 6:42/mi
20K· 12.43 mi
1:23:10
Rank: #3797 (-118)
15K → 20K
21:02 | 6:46/mi
Half· 13.11 mi
1:27:45
Rank: #3831 (-34)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:44:07
Rank: #3795 (+36)
Half → 25K
16:22 | 6:45/mi
30K· 18.64 mi
2:05:58
Rank: #3925 (-130)
25K → 30K
21:51 | 7:02/mi
20M
2:15:47
Rank: #4050 (-125)
30K → 20M
9:49 | 7:13/mi
21M
2:23:21
Rank: #4112 (-62)
20M → 21M
7:34 | 7:34/mi
35K· 21.75 mi
2:28:49
Rank: #4242 (-130)
21M → 35K
5:28 | 7:18/mi
23M
2:38:17
Rank: #4470 (-228)
35K → 23M
9:28 | 7:34/mi
24M
2:45:28
Rank: #4521 (-51)
23M → 24M
7:11 | 7:11/mi
40K· 24.85 mi
2:51:40
Rank: #4511 (+10)
24M → 40K
6:12 | 7:15/mi
25.2M
2:54:18
Rank: #4509 (+2)
40K → 25.2M
2:38 | 7:38/mi
Finish· 26.22 mi
3:01:12
Rank: #4461 (+48)
25.2M → Finish
6:54 | 6:46/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
Time1:27:45
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:33:27
Pace7:08 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:1020:596:4520:59
6:45
-
10K
6.21 mi10:43:3041:196:3920:20
6:33
-0:12
15K
9.32 mi11:04:191:02:086:4020:49
6:42
+0:09
20K
12.43 mi11:25:211:23:106:4221:02
6:46
+0:04
Half
13.11 mi11:29:561:27:456:424:35
6:43
-0:03
25K
15.53 mi11:46:181:44:076:4216:22
6:45
+0:02
30K
18.64 mi12:08:092:05:586:4521:51
7:02
+0:17
20M
20.00 mi12:17:582:15:476:479:49
7:13
+0:11
21M
21.00 mi12:25:322:23:216:507:34
7:34
+0:21
35K
21.75 mi12:31:002:28:496:515:28
7:18
-0:16
23M
23.00 mi12:40:282:38:176:539:28
7:34
+0:16
24M
24.00 mi12:47:392:45:286:547:11
7:11
-0:23
40K
24.85 mi12:53:512:51:406:546:12
7:15
+0:04
25.2M
25.20 mi12:56:292:54:186:552:38
7:38
+0:23
Finish
26.22 mi13:03:233:01:126:556:54
6:46
-0:52

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

6:33 /mi

Average Pace

6:55 /mi

Slowest Pace

7:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:03

77% of race

Time at Steady Pace

41:09

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:55 /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 mi10:23:1020:596:4520:59
6:45
#4184
10K
6.21 mi10:43:3041:196:3920:20
6:33
#3530
15K
9.32 mi11:04:191:02:086:4020:49
6:42
#3679
20K
12.43 mi11:25:211:23:106:4221:02
6:46
#3797
Half
13.11 mi11:29:561:27:456:424:35
6:43
#3831
25K
15.53 mi11:46:181:44:076:4216:22
6:45
#3795
30K
18.64 mi12:08:092:05:586:4521:51
7:02
#3925
20M
20.00 mi12:17:582:15:476:479:49
7:13
#4050
21M
21.00 mi12:25:322:23:216:507:34
7:34
#4112
35K
21.75 mi12:31:002:28:496:515:28
7:18
#4242
23M
23.00 mi12:40:282:38:176:539:28
7:34
#4470
24M
24.00 mi12:47:392:45:286:547:11
7:11
#4521
40K
24.85 mi12:53:512:51:406:546:12
7:15
#4511
25.2M
25.20 mi12:56:292:54:186:552:38
7:38
#4509
Finish
26.22 mi13:03:233:01:126:556:54
6:46
#4461
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4184392039204138(Top 16%)3884(Top 26%)3884(Top 73%)
10K6.21 mi3.10 mi3530+6543333+5873333+5873091(Top 12%)2949(Top 19%)2949(Top 56%)
15K9.32 mi3.11 mi3679-1493475-1423475-1424138(Top 16%)3884(Top 26%)3884(Top 73%)
20K12.43 mi3.11 mi3797-1183587-1123587-1124173(Top 16%)3912(Top 26%)3912(Top 74%)
Half13.11 mi0.68 mi3831-343618-313618-314526(Top 17%)4218(Top 28%)4218(Top 80%)
25K15.53 mi2.42 mi3795+363586+323586+323762(Top 14%)3542(Top 23%)3542(Top 67%)
30K18.64 mi3.11 mi3925-1303699-1133699-1134561(Top 17%)4223(Top 28%)4223(Top 80%)
20M20.00 mi1.36 mi4050-1253807-1083807-1085211(Top 20%)4703(Top 31%)4703(Top 89%)
21M21.00 mi1.00 mi4112-623857-503857-504890(Top 18%)4393(Top 29%)4393(Top 83%)
35K21.75 mi0.75 mi4242-1303969-1123969-1127109(Top 27%)5949(Top 39%)5949(Top 113%)
23M23.00 mi1.25 mi4470-2284168-1994168-1996768(Top 25%)5666(Top 37%)5666(Top 107%)
24M24.00 mi1.00 mi4521-514214-464214-465621(Top 21%)4853(Top 32%)4853(Top 92%)
40K24.85 mi0.85 mi4511+104203+114203+115130(Top 19%)4426(Top 29%)4426(Top 84%)
25.2M25.20 mi0.35 mi4509+24199+44199+44517(Top 17%)3930(Top 26%)3930(Top 74%)
Finish26.22 mi1.02 mi4461+484155+444155+443908(Top 15%)3464(Top 23%)3464(Top 66%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4138

Males

3884

M18-39

3884

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3091

Males

2949

M18-39

2949

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4138

Males

3884

M18-39

3884

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4173

Males

3912

M18-39

3912

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4526

Males

4218

M18-39

4218

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3762

Males

3542

M18-39

3542

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4561

Males

4223

M18-39

4223

30K→20M

18.6 - 20.0 mi

Top 20%
×5stories
+64ft-50ft

Overall

5211

Males

4703

M18-39

4703

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4890

Males

4393

M18-39

4393

21M→35K

21.0 - 21.8 mi

Top 27%
×7stories
+17ft-86ft

Overall

7109

Males

5949

M18-39

5949

35K→23M

21.8 - 23.0 mi

Top 25%
×5stories
+23ft-63ft

Overall

6768

Males

5666

M18-39

5666

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

5621

Males

4853

M18-39

4853

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5130

Males

4426

M18-39

4426

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4517

Males

3930

M18-39

3930

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2stories
+22ft-21ft

Overall

3908

Males

3464

M18-39

3464

Passing Analysis

Category:
Athletes Passed
1266
Passed By
1543
Net Change
-277
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4184
5K → 10K67925+654#4184#3530
10K → 15K61210-149#3530#3679
15K → 20K66184-118#3679#3797
20K → Half1246-34#3797#3831
Half → 25K9256+36#3831#3795
25K → 30K70200-130#3795#3925
30K → 20M26151-125#3925#4050
20M → 21M54116-62#4050#4112
21M → 35K10140-130#4112#4242
35K → 23M25253-228#4242#4470
23M → 24M2980-51#4470#4521
24M → 40K4737+10#4521#4511
40K → 25.2M2018+2#4511#4509
25.2M → Finish7527+48#4509#4461
TOTALS12661543-277
📊

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