Boston Marathon logo
BOSTON MARATHON 2023

Shaun Dever

Bib: 312•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 1%
Gender (Male)
#0 / 15176
Top 2%
Division (M18-39)
#0 / 5285
Top 5%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:02
Rank: #395
Start → 5K
18:02 | 5:48/mi
10K· 6.21 mi
35:45
Rank: #351 (+44)
5K → 10K
17:43 | 5:42/mi
15K· 9.32 mi
53:42
Rank: #350 (+1)
10K → 15K
17:57 | 5:47/mi
20K· 12.43 mi
1:11:55
Rank: #347 (+3)
15K → 20K
18:13 | 5:52/mi
Half· 13.11 mi
1:15:51
Rank: #347
20K → Half
3:56 | 5:46/mi
25K· 15.53 mi
1:29:52
Rank: #330 (+17)
Half → 25K
14:01 | 5:47/mi
30K· 18.64 mi
1:48:17
Rank: #318 (+12)
25K → 30K
18:25 | 5:56/mi
20M
1:56:25
Rank: #314 (+4)
30K → 20M
8:08 | 5:59/mi
21M
2:02:57
Rank: #319 (-5)
20M → 21M
6:32 | 6:32/mi
35K· 21.75 mi
2:07:24
Rank: #317 (+2)
21M → 35K
4:27 | 5:57/mi
23M
2:15:12
Rank: #324 (-7)
35K → 23M
7:48 | 6:14/mi
24M
2:21:14
Rank: #328 (-4)
23M → 24M
6:02 | 6:02/mi
40K· 24.85 mi
2:26:33
Rank: #331 (-3)
24M → 40K
5:19 | 6:13/mi
25.2M
2:28:51
Rank: #330 (+1)
40K → 25.2M
2:18 | 6:40/mi
Finish· 26.22 mi
2:35:04
Rank: #327 (+3)
25.2M → Finish
6:13 | 6:06/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
Time1:15:51
Pace5:47 /mi
2nd Half
Distance13.11 mi
Time1:19:13
Pace6:03 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:1318:025:4818:02
5:48
-
10K
6.21 mi10:35:5635:455:4517:43
5:42
-0:06
15K
9.32 mi10:53:5353:425:4617:57
5:47
+0:05
20K
12.43 mi11:12:061:11:555:4718:13
5:52
+0:05
Half
13.11 mi11:16:021:15:515:473:56
5:46
-0:06
25K
15.53 mi11:30:031:29:525:4714:01
5:47
+0:01
30K
18.64 mi11:48:281:48:175:4918:25
5:56
+0:09
20M
20.00 mi11:56:361:56:255:498:08
5:59
+0:03
21M
21.00 mi12:03:082:02:575:516:32
6:32
+0:33
35K
21.75 mi12:07:352:07:245:514:27
5:57
-0:35
23M
23.00 mi12:15:232:15:125:537:48
6:14
+0:17
24M
24.00 mi12:21:252:21:145:536:02
6:02
-0:12
40K
24.85 mi12:26:442:26:335:545:19
6:13
+0:11
25.2M
25.20 mi12:29:022:28:515:542:18
6:40
+0:27
Finish
26.22 mi12:35:152:35:045:556:13
6:06
-0:34

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

5:42 /mi

Average Pace

5:55 /mi

Slowest Pace

6:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:26:14

94% of race

Time at Steady Pace

8:50

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:55 /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 mi10:18:1318:025:4818:02
5:48
#395
10K
6.21 mi10:35:5635:455:4517:43
5:42
#351
15K
9.32 mi10:53:5353:425:4617:57
5:47
#350
20K
12.43 mi11:12:061:11:555:4718:13
5:52
#347
Half
13.11 mi11:16:021:15:515:473:56
5:46
#347
25K
15.53 mi11:30:031:29:525:4714:01
5:47
#330
30K
18.64 mi11:48:281:48:175:4918:25
5:56
#318
20M
20.00 mi11:56:361:56:255:498:08
5:59
#314
21M
21.00 mi12:03:082:02:575:516:32
6:32
#319
35K
21.75 mi12:07:352:07:245:514:27
5:57
#317
23M
23.00 mi12:15:232:15:125:537:48
6:14
#324
24M
24.00 mi12:21:252:21:145:536:02
6:02
#328
40K
24.85 mi12:26:442:26:335:545:19
6:13
#331
25.2M
25.20 mi12:29:022:28:515:542:18
6:40
#330
Finish
26.22 mi12:35:152:35:045:556:13
6:06
#327
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi395360360348(Top 1%)315(Top 2%)315(Top 6%)
10K6.21 mi3.10 mi351+44317+43317+43315(Top 1%)281(Top 2%)281(Top 5%)
15K9.32 mi3.11 mi350+1317317348(Top 1%)315(Top 2%)315(Top 6%)
20K12.43 mi3.11 mi347+3314+3314+3378(Top 1%)345(Top 2%)345(Top 7%)
Half13.11 mi0.68 mi347315-1315-1350(Top 1%)321(Top 2%)321(Top 6%)
25K15.53 mi2.42 mi330+17298+17298+17249(Top 0.9%)226(Top 1%)226(Top 4%)
30K18.64 mi3.11 mi318+12286+12286+12298(Top 1%)273(Top 2%)273(Top 5%)
20M20.00 mi1.36 mi314+4283+3283+3327(Top 1%)302(Top 2%)302(Top 6%)
21M21.00 mi1.00 mi319-5288-5288-5698(Top 3%)657(Top 4%)657(Top 12%)
35K21.75 mi0.75 mi317+2286+2286+2579(Top 2%)541(Top 4%)541(Top 10%)
23M23.00 mi1.25 mi324-7293-7293-7661(Top 2%)623(Top 4%)623(Top 12%)
24M24.00 mi1.00 mi328-4297-4297-4600(Top 2%)567(Top 4%)567(Top 11%)
40K24.85 mi0.85 mi331-3300-3300-3669(Top 3%)632(Top 4%)632(Top 12%)
25.2M25.20 mi0.35 mi330+1299+1299+1772(Top 3%)733(Top 5%)733(Top 14%)
Finish26.22 mi1.02 mi327+3296+3296+3965(Top 4%)919(Top 6%)919(Top 17%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

348

Males

315

M18-39

315

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

315

Males

281

M18-39

281

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

348

Males

315

M18-39

315

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

378

Males

345

M18-39

345

20K→Half

12.4 - 13.1 mi

Top 1%
×2stories
+19ft-37ft

Overall

350

Males

321

M18-39

321

Half→25K

13.1 - 15.5 mi

Top 0.9%
×4stories
+66ft-88ft

Overall

249

Males

226

M18-39

226

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

298

Males

273

M18-39

273

30K→20M

18.6 - 20.0 mi

Top 1%
×5stories
+64ft-50ft

Overall

327

Males

302

M18-39

302

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

698

Males

657

M18-39

657

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

579

Males

541

M18-39

541

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

661

Males

623

M18-39

623

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

600

Males

567

M18-39

567

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

669

Males

632

M18-39

632

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

772

Males

733

M18-39

733

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

965

Males

919

M18-39

919

Passing Analysis

Category:
Athletes Passed
155
Passed By
87
Net Change
+68
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#395
5K → 10K473+44#395#351
10K → 15K1413+1#351#350
15K → 20K118+3#350#347
20K → Half220#347#347
Half → 25K181+17#347#330
25K → 30K208+12#330#318
30K → 20M73+4#318#314
20M → 21M27-5#314#319
21M → 35K53+2#319#317
35K → 23M613-7#317#324
23M → 24M48-4#324#328
24M → 40K710-3#328#331
40K → 25.2M54+1#331#330
25.2M → Finish74+3#330#327
TOTALS15587+68
📊

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