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BOSTON MARATHON 2023

Jonathan Ladson

Bib: 1557•M

VA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 2%
Gender (Male)
#0 / 15176
Top 3%
Division (M18-39)
#0 / 5285
Top 6%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
5:53/mi
18:18
↑ 97↓ 3451.5%
10K· 6.21 mi
5:49/mi
36:22
↑ 79↓ 1380.4%
15K· 9.32 mi
5:48/mi
54:22
↑ 67↓ 78
20K· 12.43 mi
6:02/mi
1:13:07
↑ 106↓ 860.1%
Half· 13.11 mi
5:42/mi
1:17:00
↑ 19↓ 370.5%
25K· 15.53 mi
5:53/mi
1:31:17
↑ 66↓ 880.2%
30K· 18.64 mi
5:58/mi
1:49:49
↑ 181↓ 1480.2%
20M
5:54/mi
1:57:50
↑ 64↓ 500.2%
21M
6:22/mi
2:04:12
↑ 106↓ 241.6%
35K· 21.75 mi
5:46/mi
2:08:31
↑ 17↓ 861.7%
23M
6:05/mi
2:16:08
↑ 23↓ 630.6%
24M
6:06/mi
2:22:14
↓ 821.3%
40K· 24.85 mi
6:14/mi
2:27:34
↓ 200.3%
25.2M
7:12/mi
2:30:03
↑ 13↓ 160.2%
Finish· 26.22 mi
6:28/mi
2:36:38
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:17:00
Pace5:52 /mi
2nd Half
Distance13.11 mi
Time1:19:38
Pace6:04 /mi
📊Positive Split: 3.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:3518:185:5318:18
5:53
-
10K
6.21 mi10:36:3936:225:5118:04
5:49
-0:04
15K
9.32 mi10:54:3954:225:5018:00
5:48
-0:01
20K
12.43 mi11:13:241:13:075:5318:45
6:02
+0:14
Half
13.11 mi11:17:171:17:005:523:53
5:42
-0:20
25K
15.53 mi11:31:341:31:175:5314:17
5:53
+0:11
30K
18.64 mi11:50:061:49:495:5318:32
5:58
+0:05
20M
20.00 mi11:58:071:57:505:538:01
5:54
-0:04
21M
21.00 mi12:04:292:04:125:556:22
6:22
+0:28
35K
21.75 mi12:08:482:08:315:554:19
5:46
-0:36
23M
23.00 mi12:16:252:16:085:557:37
6:05
+0:19
24M
24.00 mi12:22:312:22:145:566:06
6:06
+0:01
40K
24.85 mi12:27:512:27:345:565:20
6:14
+0:08
25.2M
25.20 mi12:30:202:30:035:572:29
7:12
+0:58
Finish
26.22 mi12:36:552:36:385:596:35
6:28
-0:44

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

5:59 /mi

Slowest Pace

7:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

8:12

5% of race

Time at Steady Pace

2:07:40

82% of race

Time at Slower Pace

20:46

13% of race

Average Pace: 5:58 /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 mi10:18:3518:185:5318:18
5:53
#511
10K
6.21 mi10:36:3936:225:5118:04
5:49
#471
15K
9.32 mi10:54:3954:225:5018:00
5:48
#426
20K
12.43 mi11:13:241:13:075:5318:45
6:02
#469
Half
13.11 mi11:17:171:17:005:523:53
5:42
#446
25K
15.53 mi11:31:341:31:175:5314:17
5:53
#438
30K
18.64 mi11:50:061:49:495:5318:32
5:58
#405
20M
20.00 mi11:58:071:57:505:538:01
5:54
#385
21M
21.00 mi12:04:292:04:125:556:22
6:22
#391
35K
21.75 mi12:08:482:08:315:554:19
5:46
#384
23M
23.00 mi12:16:252:16:085:557:37
6:05
#380
24M
24.00 mi12:22:312:22:145:566:06
6:06
#383
40K
24.85 mi12:27:512:27:345:565:20
6:14
#378
25.2M
25.20 mi12:30:202:30:035:572:29
7:12
#395
Finish
26.22 mi12:36:552:36:385:596:35
6:28
#416
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi511471471365(Top 1%)332(Top 2%)332(Top 6%)
10K6.21 mi3.10 mi471+40436+35436+35449(Top 2%)414(Top 3%)414(Top 8%)
15K9.32 mi3.11 mi426+45391+45391+45365(Top 1%)332(Top 2%)332(Top 6%)
20K12.43 mi3.11 mi469-43433-42433-42630(Top 2%)589(Top 4%)589(Top 11%)
Half13.11 mi0.68 mi446+23410+23410+23275(Top 1%)253(Top 2%)253(Top 5%)
25K15.53 mi2.42 mi438+8403+7403+7379(Top 1%)351(Top 2%)351(Top 7%)
30K18.64 mi3.11 mi405+33373+30373+30344(Top 1%)317(Top 2%)317(Top 6%)
20M20.00 mi1.36 mi385+20353+20353+20249(Top 0.9%)225(Top 1%)225(Top 4%)
21M21.00 mi1.00 mi391-6359-6359-6430(Top 2%)397(Top 3%)397(Top 8%)
35K21.75 mi0.75 mi384+7352+7352+7320(Top 1%)294(Top 2%)294(Top 6%)
23M23.00 mi1.25 mi380+4347+5347+5425(Top 2%)397(Top 3%)397(Top 8%)
24M24.00 mi1.00 mi383-3351-4351-4753(Top 3%)713(Top 5%)713(Top 13%)
40K24.85 mi0.85 mi378+5346+5346+5718(Top 3%)679(Top 4%)679(Top 13%)
25.2M25.20 mi0.35 mi395-17361-15361-152436(Top 9%)2249(Top 15%)2249(Top 43%)
Finish26.22 mi1.02 mi416-21381-20381-202266(Top 9%)2094(Top 14%)2094(Top 40%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21story building
+97ft-345ft

Overall

365

Males

332

M18-39

332

5K→10K

3.1 - 6.2 mi

Top 2%
×5story building
+79ft-138ft

Overall

449

Males

414

M18-39

414

10K→15K

6.2 - 9.3 mi

Top 1%
×3story building
+67ft-78ft

Overall

365

Males

332

M18-39

332

15K→20K

9.3 - 12.4 mi

Top 2%
×5story building
+106ft-86ft

Overall

630

Males

589

M18-39

589

20K→Half

12.4 - 13.1 mi

Top 1%
×2story building
+19ft-37ft

Overall

275

Males

253

M18-39

253

Half→25K

13.1 - 15.5 mi

Top 1%
×4story building
+66ft-88ft

Overall

379

Males

351

M18-39

351

25K→30K

15.5 - 18.6 mi

Top 1%
×9story building
+181ft-148ft

Overall

344

Males

317

M18-39

317

30K→20M

18.6 - 20.0 mi

Top 0.9%
×5story building
+64ft-50ft

Overall

249

Males

225

M18-39

225

20M→21M

20.0 - 21.0 mi

Top 2%
×8story building
+106ft-24ft

Overall

430

Males

397

M18-39

397

21M→35K

21.0 - 21.8 mi

Top 1%
×7story building
+17ft-86ft

Overall

320

Males

294

M18-39

294

35K→23M

21.8 - 23.0 mi

Top 2%
×5story building
+23ft-63ft

Overall

425

Males

397

M18-39

397

23M→24M

23.0 - 24.0 mi

Top 3%
×6story building
+12ft-82ft

Overall

753

Males

713

M18-39

713

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

718

Males

679

M18-39

679

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2436

Males

2249

M18-39

2249

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2story building
+22ft-21ft

Overall

2266

Males

2094

M18-39

2094

Passing Analysis

Category:
Athletes Passed
242
Passed By
147
Net Change
+95
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#511
5K → 10K5313+40#511#471
10K → 15K450+45#471#426
15K → 20K548-43#426#469
20K → Half230+23#469#446
Half → 25K135+8#446#438
25K → 30K363+33#438#405
30K → 20M211+20#405#385
20M → 21M410-6#385#391
21M → 35K81+7#391#384
35K → 23M128+4#384#380
23M → 24M58-3#380#383
24M → 40K127+5#383#378
40K → 25.2M219-17#378#395
25.2M → Finish324-21#395#416
TOTALS242147+95
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing