Boston Marathon logo
BOSTON MARATHON 2023

Brad Layman

Bib: 6901•M

PA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 22%
Division (M18-39)
#0 / 5285
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
21:19
Rank: #5217
Start → 5K
21:19 | 6:52/mi
10K· 6.21 mi
41:37
Rank: #3949 (+1268)
5K → 10K
20:18 | 6:32/mi
15K· 9.32 mi
1:02:08
Rank: #3674 (+275)
10K → 15K
20:31 | 6:36/mi
20K· 12.43 mi
1:22:34
Rank: #3408 (+266)
15K → 20K
20:26 | 6:35/mi
Half· 13.11 mi
1:26:57
Rank: #3335 (+73)
20K → Half
4:23 | 6:25/mi
25K· 15.53 mi
1:42:43
Rank: #3077 (+258)
Half → 25K
15:46 | 6:30/mi
30K· 18.64 mi
2:03:20
Rank: #2833 (+244)
25K → 30K
20:37 | 6:38/mi
20M
2:12:33
Rank: #2796 (+37)
30K → 20M
9:13 | 6:47/mi
21M
2:19:52
Rank: #2818 (-22)
20M → 21M
7:19 | 7:19/mi
35K· 21.75 mi
2:25:02
Rank: #2878 (-60)
21M → 35K
5:10 | 6:54/mi
23M
2:34:09
Rank: #3016 (-138)
35K → 23M
9:07 | 7:17/mi
24M
2:41:23
Rank: #3147 (-131)
23M → 24M
7:14 | 7:14/mi
40K· 24.85 mi
2:47:48
Rank: #3281 (-134)
24M → 40K
6:25 | 7:30/mi
25.2M
2:50:34
Rank: #3325 (-44)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
2:58:04
Rank: #3511 (-186)
25.2M → Finish
7:30 | 7:22/mi

Course Map & Elevation

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
Time1:26:57
Pace6:38 /mi
2nd Half
Distance13.11 mi
Time1:31:07
Pace6:57 /mi
📊Positive Split: 4.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:0121:196:5221:19
6:52
-
10K
6.21 mi10:45:1941:376:4220:18
6:32
-0:20
15K
9.32 mi11:05:501:02:086:4020:31
6:36
+0:04
20K
12.43 mi11:26:161:22:346:3920:26
6:35
-0:01
Half
13.11 mi11:30:391:26:576:384:23
6:25
-0:10
25K
15.53 mi11:46:251:42:436:3715:46
6:30
+0:05
30K
18.64 mi12:07:022:03:206:3720:37
6:38
+0:08
20M
20.00 mi12:16:152:12:336:389:13
6:47
+0:09
21M
21.00 mi12:23:342:19:526:407:19
7:19
+0:32
35K
21.75 mi12:28:442:25:026:405:10
6:54
-0:25
23M
23.00 mi12:37:512:34:096:429:07
7:17
+0:23
24M
24.00 mi12:45:052:41:236:437:14
7:14
-0:03
40K
24.85 mi12:51:302:47:486:456:25
7:30
+0:16
25.2M
25.20 mi12:54:162:50:346:462:46
8:01
+0:31
Finish
26.22 mi13:01:462:58:046:487:30
7:22
-0:39

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

6:25 /mi

Average Pace

6:48 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:42:01

57% of race

Time at Steady Pace

35:42

20% of race

Time at Slower Pace

40:21

23% of race

Average Pace: 6:47 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:25:0121:196:5221:19
6:52
#5217
10K
6.21 mi10:45:1941:376:4220:18
6:32
#3949
15K
9.32 mi11:05:501:02:086:4020:31
6:36
#3674
20K
12.43 mi11:26:161:22:346:3920:26
6:35
#3408
Half
13.11 mi11:30:391:26:576:384:23
6:25
#3335
25K
15.53 mi11:46:251:42:436:3715:46
6:30
#3077
30K
18.64 mi12:07:022:03:206:3720:37
6:38
#2833
20M
20.00 mi12:16:152:12:336:389:13
6:47
#2796
21M
21.00 mi12:23:342:19:526:407:19
7:19
#2818
35K
21.75 mi12:28:442:25:026:405:10
6:54
#2878
23M
23.00 mi12:37:512:34:096:429:07
7:17
#3016
24M
24.00 mi12:45:052:41:236:437:14
7:14
#3147
40K
24.85 mi12:51:302:47:486:456:25
7:30
#3281
25.2M
25.20 mi12:54:162:50:346:462:46
8:01
#3325
Finish
26.22 mi13:01:462:58:046:487:30
7:22
#3511
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5217483148313325(Top 12%)3155(Top 21%)3155(Top 60%)
10K6.21 mi3.10 mi3949+12683718+11133718+11133005(Top 11%)2869(Top 19%)2869(Top 54%)
15K9.32 mi3.11 mi3674+2753470+2483470+2483325(Top 12%)3155(Top 21%)3155(Top 60%)
20K12.43 mi3.11 mi3408+2663233+2373233+2372708(Top 10%)2590(Top 17%)2590(Top 49%)
Half13.11 mi0.68 mi3335+733171+623171+622392(Top 9%)2297(Top 15%)2297(Top 43%)
25K15.53 mi2.42 mi3077+2582934+2372934+2372190(Top 8%)2101(Top 14%)2101(Top 40%)
30K18.64 mi3.11 mi2833+2442709+2252709+2252132(Top 8%)2037(Top 13%)2037(Top 39%)
20M20.00 mi1.36 mi2796+372672+372672+372726(Top 10%)2580(Top 17%)2580(Top 49%)
21M21.00 mi1.00 mi2818-222693-212693-213680(Top 14%)3411(Top 22%)3411(Top 65%)
35K21.75 mi0.75 mi2878-602743-502743-504761(Top 18%)4297(Top 28%)4297(Top 81%)
23M23.00 mi1.25 mi3016-1382866-1232866-1235187(Top 19%)4595(Top 30%)4595(Top 87%)
24M24.00 mi1.00 mi3147-1312985-1192985-1195899(Top 22%)5029(Top 33%)5029(Top 95%)
40K24.85 mi0.85 mi3281-1343103-1183103-1186702(Top 25%)5439(Top 36%)5439(Top 103%)
25.2M25.20 mi0.35 mi3325-443144-413144-416516(Top 24%)5242(Top 35%)5242(Top 99%)
Finish26.22 mi1.02 mi3511-1863306-1623306-1627467(Top 28%)5834(Top 38%)5834(Top 110%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3325

Males

3155

M18-39

3155

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

3005

Males

2869

M18-39

2869

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3325

Males

3155

M18-39

3155

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2708

Males

2590

M18-39

2590

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2392

Males

2297

M18-39

2297

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2190

Males

2101

M18-39

2101

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2132

Males

2037

M18-39

2037

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2726

Males

2580

M18-39

2580

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

3680

Males

3411

M18-39

3411

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

4761

Males

4297

M18-39

4297

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

5187

Males

4595

M18-39

4595

23M→24M

23.0 - 24.0 mi

Top 22%
×6stories
+12ft-82ft

Overall

5899

Males

5029

M18-39

5029

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6702

Males

5439

M18-39

5439

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6516

Males

5242

M18-39

5242

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7467

Males

5834

M18-39

5834

Passing Analysis

Category:
Athletes Passed
2591
Passed By
885
Net Change
+1706
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5217
5K → 10K12735+1268#5217#3949
10K → 15K29419+275#3949#3674
15K → 20K2759+266#3674#3408
20K → Half741+73#3408#3335
Half → 25K2591+258#3335#3077
25K → 30K2473+244#3077#2833
30K → 20M5215+37#2833#2796
20M → 21M3759-22#2796#2818
21M → 35K1171-60#2818#2878
35K → 23M22160-138#2878#3016
23M → 24M14145-131#3016#3147
24M → 40K14148-134#3147#3281
40K → 25.2M852-44#3281#3325
25.2M → Finish11197-186#3325#3511
TOTALS2591885+1706
📊

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