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BOSTON MARATHON 2023

Jonathan Rost

Bib: 340•M

NY

0:00
0:00
/ mi
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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
18:17
Rank: #505
Start → 5K
18:17 | 5:53/mi
10K· 6.21 mi
36:13
Rank: #437 (+68)
5K → 10K
17:56 | 5:46/mi
15K· 9.32 mi
54:13
Rank: #404 (+33)
10K → 15K
18:00 | 5:48/mi
20K· 12.43 mi
1:12:25
Rank: #389 (+15)
15K → 20K
18:12 | 5:51/mi
Half· 13.11 mi
1:16:22
Rank: #390 (-1)
20K → Half
3:57 | 5:47/mi
25K· 15.53 mi
1:30:26
Rank: #369 (+21)
Half → 25K
14:04 | 5:48/mi
30K· 18.64 mi
1:49:00
Rank: #357 (+12)
25K → 30K
18:34 | 5:59/mi
20M
1:57:15
Rank: #356 (+1)
30K → 20M
8:15 | 6:04/mi
21M
2:03:37
Rank: #354 (+2)
20M → 21M
6:22 | 6:22/mi
35K· 21.75 mi
2:08:03
Rank: #357 (-3)
21M → 35K
4:26 | 5:56/mi
23M
2:15:45
Rank: #353 (+4)
35K → 23M
7:42 | 6:09/mi
24M
2:21:45
Rank: #356 (-3)
23M → 24M
6:00 | 6:00/mi
40K· 24.85 mi
2:27:04
Rank: #349 (+7)
24M → 40K
5:19 | 6:13/mi
25.2M
2:29:20
Rank: #351 (-2)
40K → 25.2M
2:16 | 6:34/mi
Finish· 26.22 mi
2:35:25
Rank: #344 (+7)
25.2M → Finish
6:05 | 5:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:16:22
Pace5:50 /mi
2nd Half
Distance13.11 mi
Time1:19:03
Pace6:02 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:2918:175:5318:17
5:53
-
10K
6.21 mi10:36:2536:135:5017:56
5:46
-0:07
15K
9.32 mi10:54:2554:135:4918:00
5:48
+0:02
20K
12.43 mi11:12:371:12:255:5018:12
5:51
+0:03
Half
13.11 mi11:16:341:16:225:503:57
5:47
-0:04
25K
15.53 mi11:30:381:30:265:4914:04
5:48
+0:01
30K
18.64 mi11:49:121:49:005:5118:34
5:59
+0:11
20M
20.00 mi11:57:271:57:155:528:15
6:04
+0:05
21M
21.00 mi12:03:492:03:375:536:22
6:22
+0:18
35K
21.75 mi12:08:152:08:035:534:26
5:56
-0:26
23M
23.00 mi12:15:572:15:455:547:42
6:09
+0:13
24M
24.00 mi12:21:572:21:455:546:00
6:00
-0:09
40K
24.85 mi12:27:162:27:045:555:19
6:13
+0:13
25.2M
25.20 mi12:29:322:29:205:562:16
6:34
+0:21
Finish
26.22 mi12:35:372:35:255:566:05
5:58
-0:36

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

5:46 /mi

Average Pace

5:56 /mi

Slowest Pace

6:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:26:47

94% of race

Time at Steady Pace

8:38

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:56 /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 mi10:18:2918:175:5318:17
5:53
#505
10K
6.21 mi10:36:2536:135:5017:56
5:46
#437
15K
9.32 mi10:54:2554:135:4918:00
5:48
#404
20K
12.43 mi11:12:371:12:255:5018:12
5:51
#389
Half
13.11 mi11:16:341:16:225:503:57
5:47
#390
25K
15.53 mi11:30:381:30:265:4914:04
5:48
#369
30K
18.64 mi11:49:121:49:005:5118:34
5:59
#357
20M
20.00 mi11:57:271:57:155:528:15
6:04
#356
21M
21.00 mi12:03:492:03:375:536:22
6:22
#354
35K
21.75 mi12:08:152:08:035:534:26
5:56
#357
23M
23.00 mi12:15:572:15:455:547:42
6:09
#353
24M
24.00 mi12:21:572:21:455:546:00
6:00
#356
40K
24.85 mi12:27:162:27:045:555:19
6:13
#349
25.2M
25.20 mi12:29:322:29:205:562:16
6:34
#351
Finish
26.22 mi12:35:372:35:255:566:05
5:58
#344
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi505466466360(Top 1%)327(Top 2%)327(Top 6%)
10K6.21 mi3.10 mi437+68402+64402+64396(Top 1%)361(Top 2%)361(Top 7%)
15K9.32 mi3.11 mi404+33369+33369+33360(Top 1%)327(Top 2%)327(Top 6%)
20K12.43 mi3.11 mi389+15354+15354+15367(Top 1%)334(Top 2%)334(Top 6%)
Half13.11 mi0.68 mi390-1356-2356-2378(Top 1%)349(Top 2%)349(Top 7%)
25K15.53 mi2.42 mi369+21337+19337+19278(Top 1%)250(Top 2%)250(Top 5%)
30K18.64 mi3.11 mi357+12325+12325+12357(Top 1%)330(Top 2%)330(Top 6%)
20M20.00 mi1.36 mi356+1324+1324+1436(Top 2%)402(Top 3%)402(Top 8%)
21M21.00 mi1.00 mi354+2322+2322+2426(Top 2%)393(Top 3%)393(Top 7%)
35K21.75 mi0.75 mi357-3326-4326-4539(Top 2%)501(Top 3%)501(Top 9%)
23M23.00 mi1.25 mi353+4322+4322+4530(Top 2%)499(Top 3%)499(Top 9%)
24M24.00 mi1.00 mi356-3325-3325-3536(Top 2%)506(Top 3%)506(Top 10%)
40K24.85 mi0.85 mi349+7317+8317+8670(Top 3%)633(Top 4%)633(Top 12%)
25.2M25.20 mi0.35 mi351-2319-2319-2594(Top 2%)561(Top 4%)561(Top 11%)
Finish26.22 mi1.02 mi344+7313+6313+6650(Top 2%)619(Top 4%)619(Top 12%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

360

Males

327

M18-39

327

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

396

Males

361

M18-39

361

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

360

Males

327

M18-39

327

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

367

Males

334

M18-39

334

20K→Half

12.4 - 13.1 mi

Top 1%
×2stories
+19ft-37ft

Overall

378

Males

349

M18-39

349

Half→25K

13.1 - 15.5 mi

Top 1%
×4stories
+66ft-88ft

Overall

278

Males

250

M18-39

250

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

357

Males

330

M18-39

330

30K→20M

18.6 - 20.0 mi

Top 2%
×5stories
+64ft-50ft

Overall

436

Males

402

M18-39

402

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

426

Males

393

M18-39

393

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

539

Males

501

M18-39

501

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

530

Males

499

M18-39

499

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

536

Males

506

M18-39

506

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

670

Males

633

M18-39

633

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

594

Males

561

M18-39

561

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

650

Males

619

M18-39

619

Passing Analysis

Category:
Athletes Passed
225
Passed By
64
Net Change
+161
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#505
5K → 10K713+68#505#437
10K → 15K363+33#437#404
15K → 20K194+15#404#389
20K → Half12-1#389#390
Half → 25K221+21#390#369
25K → 30K186+12#369#357
30K → 20M54+1#357#356
20M → 21M75+2#356#354
21M → 35K36-3#354#357
35K → 23M128+4#357#353
23M → 24M58-3#353#356
24M → 40K103+7#356#349
40K → 25.2M13-2#349#351
25.2M → Finish158+7#351#344
TOTALS22564+161
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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