Boston Marathon logo
BOSTON MARATHON 2023

Jonathan Kushner

Bib: 11255•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 23%
Gender (Male)
#0 / 15176
Top 36%
Masters (Masters Men)
#0 / 9891
Top 22%
Division (M50-54)
#0 / 2052
Top 16%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:27
Rank: #5599
Start → 5K
21:27 | 6:54/mi
10K· 6.21 mi
42:44
Rank: #5644 (-45)
5K → 10K
21:17 | 6:51/mi
15K· 9.32 mi
1:03:59
Rank: #5584 (+60)
10K → 15K
21:15 | 6:50/mi
20K· 12.43 mi
1:25:39
Rank: #5659 (-75)
15K → 20K
21:40 | 6:58/mi
Half· 13.11 mi
1:30:27
Rank: #5718 (-59)
20K → Half
4:48 | 7:02/mi
25K· 15.53 mi
1:47:50
Rank: #5848 (-130)
Half → 25K
17:23 | 7:10/mi
30K· 18.64 mi
2:11:39
Rank: #6197 (-349)
25K → 30K
23:49 | 7:40/mi
20M
2:21:42
Rank: #6144 (+53)
30K → 20M
10:03 | 7:24/mi
21M
2:29:32
Rank: #6119 (+25)
20M → 21M
7:50 | 7:50/mi
35K· 21.75 mi
2:35:03
Rank: #6142 (-23)
21M → 35K
5:31 | 7:22/mi
23M
2:44:26
Rank: #6096 (+46)
35K → 23M
9:23 | 7:30/mi
24M
2:51:53
Rank: #6091 (+5)
23M → 24M
7:27 | 7:27/mi
40K· 24.85 mi
2:58:13
Rank: #6047 (+44)
24M → 40K
6:20 | 7:24/mi
25.2M
3:01:00
Rank: #6044 (+3)
40K → 25.2M
2:47 | 8:04/mi
Finish· 26.22 mi
3:08:38
Rank: #6091 (-47)
25.2M → Finish
7:38 | 7:29/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
Time1:30:27
Pace6:54 /mi
2nd Half
Distance13.11 mi
Time1:38:11
Pace7:29 /mi
📊Positive Split: 8.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:0121:276:5421:27
6:54
-
10K
6.21 mi11:09:1842:446:5321:17
6:51
-0:03
15K
9.32 mi11:30:331:03:596:5221:15
6:50
-0:01
20K
12.43 mi11:52:131:25:396:5421:40
6:58
+0:08
Half
13.11 mi11:57:011:30:276:544:48
7:02
+0:04
25K
15.53 mi12:14:241:47:506:5617:23
7:10
+0:08
30K
18.64 mi12:38:132:11:397:0423:49
7:40
+0:30
20M
20.00 mi12:48:162:21:427:0510:03
7:24
-0:16
21M
21.00 mi12:56:062:29:327:077:50
7:50
+0:26
35K
21.75 mi13:01:372:35:037:085:31
7:22
-0:28
23M
23.00 mi13:11:002:44:267:099:23
7:30
+0:08
24M
24.00 mi13:18:272:51:537:107:27
7:27
-0:03
40K
24.85 mi13:24:472:58:137:106:20
7:24
-0:03
25.2M
25.20 mi13:27:343:01:007:112:47
8:04
+0:40
Finish
26.22 mi13:35:123:08:387:127:38
7:29
-0:35

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

6:50 /mi

Average Pace

7:12 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:34:12

82% of race

Time at Steady Pace

31:39

17% of race

Time at Slower Pace

2:47

1% of race

Average Pace: 7:12 /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 mi10:48:0121:276:5421:27
6:54
#5599
10K
6.21 mi11:09:1842:446:5321:17
6:51
#5644
15K
9.32 mi11:30:331:03:596:5221:15
6:50
#5584
20K
12.43 mi11:52:131:25:396:5421:40
6:58
#5659
Half
13.11 mi11:57:011:30:276:544:48
7:02
#5718
25K
15.53 mi12:14:241:47:506:5617:23
7:10
#5848
30K
18.64 mi12:38:132:11:397:0423:49
7:40
#6197
20M
20.00 mi12:48:162:21:427:0510:03
7:24
#6144
21M
21.00 mi12:56:062:29:327:077:50
7:50
#6119
35K
21.75 mi13:01:372:35:037:085:31
7:22
#6142
23M
23.00 mi13:11:002:44:267:099:23
7:30
#6096
24M
24.00 mi13:18:272:51:537:107:27
7:27
#6091
40K
24.85 mi13:24:472:58:137:106:20
7:24
#6047
25.2M
25.20 mi13:27:343:01:007:112:47
8:04
#6044
Finish
26.22 mi13:35:123:08:387:127:38
7:29
#6091
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5599515851585482(Top 21%)5051(Top 33%)5051(Top 246%)
10K6.21 mi3.10 mi5644-455196-385196-385754(Top 22%)5266(Top 35%)5266(Top 257%)
15K9.32 mi3.11 mi5584+605143+535143+535482(Top 21%)5051(Top 33%)5051(Top 246%)
20K12.43 mi3.11 mi5659-755212-695212-695829(Top 22%)5338(Top 35%)5338(Top 260%)
Half13.11 mi0.68 mi5718-595260-485260-486710(Top 25%)6017(Top 40%)6017(Top 293%)
25K15.53 mi2.42 mi5848-1305361-1015361-1016491(Top 24%)5791(Top 38%)5791(Top 282%)
30K18.64 mi3.11 mi6197-3495612-2515612-2518390(Top 32%)6912(Top 46%)6912(Top 337%)
20M20.00 mi1.36 mi6144+535558+545558+546156(Top 23%)5408(Top 36%)5408(Top 264%)
21M21.00 mi1.00 mi6119+255529+295529+296327(Top 24%)5431(Top 36%)5431(Top 265%)
35K21.75 mi0.75 mi6142-235542-135542-137579(Top 28%)6221(Top 41%)6221(Top 303%)
23M23.00 mi1.25 mi6096+465494+485494+486368(Top 24%)5418(Top 36%)5418(Top 264%)
24M24.00 mi1.00 mi6091+55478+165478+167343(Top 28%)5913(Top 39%)5913(Top 288%)
40K24.85 mi0.85 mi6047+445435+435435+436118(Top 23%)5092(Top 34%)5092(Top 248%)
25.2M25.20 mi0.35 mi6044+35428+75428+76848(Top 26%)5480(Top 36%)5480(Top 267%)
Finish26.22 mi1.02 mi6091-475448-205448-208436(Top 32%)6412(Top 42%)6412(Top 312%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21stories
+97ft-345ft

Overall

5482

Males

5051

M50-54

5051

5K→10K

3.1 - 6.2 mi

Top 22%
×5stories
+79ft-138ft

Overall

5754

Males

5266

M50-54

5266

10K→15K

6.2 - 9.3 mi

Top 21%
×3stories
+67ft-78ft

Overall

5482

Males

5051

M50-54

5051

15K→20K

9.3 - 12.4 mi

Top 22%
×5stories
+106ft-86ft

Overall

5829

Males

5338

M50-54

5338

20K→Half

12.4 - 13.1 mi

Top 25%
×2stories
+19ft-37ft

Overall

6710

Males

6017

M50-54

6017

Half→25K

13.1 - 15.5 mi

Top 24%
×4stories
+66ft-88ft

Overall

6491

Males

5791

M50-54

5791

25K→30K

15.5 - 18.6 mi

Top 32%
×9stories
+181ft-148ft

Overall

8390

Males

6912

M50-54

6912

30K→20M

18.6 - 20.0 mi

Top 23%
×5stories
+64ft-50ft

Overall

6156

Males

5408

M50-54

5408

20M→21M

20.0 - 21.0 mi

Top 24%
×8stories
+106ft-24ft

Overall

6327

Males

5431

M50-54

5431

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

7579

Males

6221

M50-54

6221

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6368

Males

5418

M50-54

5418

23M→24M

23.0 - 24.0 mi

Top 28%
×6stories
+12ft-82ft

Overall

7343

Males

5913

M50-54

5913

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6118

Males

5092

M50-54

5092

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

6848

Males

5480

M50-54

5480

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

8436

Males

6412

M50-54

6412

Passing Analysis

Category:
Athletes Passed
938
Passed By
1430
Net Change
-492
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5599
5K → 10K176221-45#5599#5644
10K → 15K15090+60#5644#5584
15K → 20K82157-75#5584#5659
20K → Half564-59#5659#5718
Half → 25K43173-130#5718#5848
25K → 30K46395-349#5848#6197
30K → 20M8330+53#6197#6144
20M → 21M6035+25#6144#6119
21M → 35K2649-23#6119#6142
35K → 23M8943+46#6142#6096
23M → 24M5449+5#6096#6091
24M → 40K6723+44#6091#6047
40K → 25.2M2724+3#6047#6044
25.2M → Finish3077-47#6044#6091
TOTALS9381430-492
📊

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