Justin Dostaly

Bib: 31168β€’M

NY

Boston Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Age Group (M18-39)
#0 / 5723
Race Day Weather
51Β°/41Β°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
31:07
3.11 mi
Rank: #25995
Start β†’ 5K
31:07 | 10:01/mi
10K
1:03:15
6.21 mi
Rank: #26330 (-335)
5K β†’ 10K
32:08 | 10:21/mi
15K
1:36:03
9.32 mi
Rank: #26519 (-189)
10K β†’ 15K
32:48 | 10:34/mi
20K
2:09:42
12.43 mi
Rank: #26560 (-41)
15K β†’ 20K
33:39 | 10:50/mi
HALF
2:17:10
13.11 mi
Rank: #26593 (-33)
20K β†’ HALF
7:28 | 10:58/mi
25K
2:45:01
15.53 mi
Rank: #26701 (-108)
HALF β†’ 25K
27:51 | 11:30/mi
30K
3:25:52
18.64 mi
Rank: #27055 (-354)
25K β†’ 30K
40:51 | 13:09/mi
20M
3:44:09
20.00 mi
Rank: #27143 (-88)
30K β†’ 20M
18:17 | 13:28/mi
21M
3:59:16
21.00 mi
Rank: #27260 (-117)
20M β†’ 21M
15:07 | 15:07/mi
35K
4:11:12
21.75 mi
Rank: #27420 (-160)
21M β†’ 35K
11:56 | 15:58/mi
23M
4:27:56
23.00 mi
Rank: #27463 (-43)
35K β†’ 23M
16:44 | 13:23/mi
24M
4:41:41
24.00 mi
Rank: #27521 (-58)
23M β†’ 24M
13:45 | 13:45/mi
40K
4:53:11
24.85 mi
Rank: #27518 (+3)
24M β†’ 40K
11:30 | 13:28/mi
25.2M
4:59:17
25.20 mi
Rank: #27584 (-66)
40K β†’ 25.2M
6:06 | 17:42/mi
FINISH
5:12:59
26.22 mi
Rank: #27642 (-58)
25.2M β†’ FINISH
13:42 | 13:27/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:17:10
Pace10:28 /mi
2nd Half
Distance13.11 mi
Time2:55:49
Pace13:25 /mi
πŸ“ŠPositive Split: 28.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi12:02:4231:0710:0131:07
10:01
-
10K
6.21 mi12:34:501:03:1510:1132:08
10:21
+0:20
15K
9.32 mi13:07:381:36:0310:1932:48
10:34
+0:13
20K
12.43 mi13:41:172:09:4210:2733:39
10:50
+0:16
HALF
13.11 mi13:48:452:17:1010:287:28
10:58
+0:08
25K
15.53 mi14:16:362:45:0110:3827:51
11:30
+0:32
30K
18.64 mi14:57:273:25:5211:0340:51
13:09
+1:39
20M
20.00 mi15:15:443:44:0911:1318:17
13:28
+0:19
21M
21.00 mi15:30:513:59:1611:2415:07
15:07
+1:39
35K
21.75 mi15:42:474:11:1211:3411:56
15:58
+0:51
23M
23.00 mi15:59:314:27:5611:3916:44
13:23
-2:35
24M
24.00 mi16:13:164:41:4111:4513:45
13:45
+0:22
40K
24.85 mi16:24:464:53:1111:4811:30
13:28
-0:17
25.2M
25.20 mi16:30:524:59:1711:536:06
17:42
+4:14
FINISH
26.22 mi16:44:345:12:5911:5713:42
13:27
-4:15

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

πŸ“ˆPace 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

10:01 /mi

Average Pace

11:57 /mi

Slowest Pace

17:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

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

2:45:01

53% of race

Time at Steady Pace

1:54:49

37% of race

Time at Slower Pace

33:09

11% of race

Average Pace: 11:56 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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 mi12:02:4231:0710:0131:07
10:01
#25995
10K
6.21 mi12:34:501:03:1510:1132:08
10:21
#26330
15K
9.32 mi13:07:381:36:0310:1932:48
10:34
#26519
20K
12.43 mi13:41:172:09:4210:2733:39
10:50
#26560
HALF
13.11 mi13:48:452:17:1010:287:28
10:58
#26593
25K
15.53 mi14:16:362:45:0110:3827:51
11:30
#26701
30K
18.64 mi14:57:273:25:5211:0340:51
13:09
#27055
20M
20.00 mi15:15:443:44:0911:1318:17
13:28
#27143
21M
21.00 mi15:30:513:59:1611:2415:07
15:07
#27260
35K
21.75 mi15:42:474:11:1211:3411:56
15:58
#27420
23M
23.00 mi15:59:314:27:5611:3916:44
13:23
#27463
24M
24.00 mi16:13:164:41:4111:4513:45
13:45
#27521
40K
24.85 mi16:24:464:53:1111:4811:30
13:28
#27518
25.2M
25.20 mi16:30:524:59:1711:536:06
17:42
#27584
FINISH
26.22 mi16:44:345:12:5911:5713:42
13:27
#27642
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi25995152001520026795(Top 92%)15514(Top 95%)15514(Top 271%)
10K6.21 mi3.10 mi26330-33515339-13915339-13926620(Top 92%)15440(Top 94%)15440(Top 270%)
15K9.32 mi3.11 mi26519-18915410-7115410-7126795(Top 92%)15514(Top 95%)15514(Top 271%)
20K12.43 mi3.11 mi26560-4115417-715417-726747(Top 92%)15466(Top 95%)15466(Top 270%)
HALF13.11 mi0.68 mi26593-3315418-115418-127311(Top 94%)15669(Top 96%)15669(Top 274%)
25K15.53 mi2.42 mi26701-10815459-4115459-4126997(Top 93%)15534(Top 95%)15534(Top 271%)
30K18.64 mi3.11 mi27055-35415582-12315582-12327835(Top 96%)15829(Top 97%)15829(Top 277%)
20M20.00 mi1.36 mi27143-8815611-2915611-2927762(Top 96%)15752(Top 96%)15752(Top 275%)
21M21.00 mi1.00 mi27260-11715657-4615657-4628135(Top 97%)15906(Top 97%)15906(Top 278%)
35K21.75 mi0.75 mi27420-16015709-5215709-5228857(Top 99%)16240(Top 99%)16240(Top 284%)
23M23.00 mi1.25 mi27463-4315720-1115720-1127680(Top 95%)15675(Top 96%)15675(Top 274%)
24M24.00 mi1.00 mi27521-5815740-2015740-2028195(Top 97%)15881(Top 97%)15881(Top 277%)
40K24.85 mi0.85 mi27518+315736+415736+427459(Top 95%)15513(Top 95%)15513(Top 271%)
25.2M25.20 mi0.35 mi27584-6615758-2215758-2228825(Top 99%)16206(Top 99%)16206(Top 283%)
FINISH26.22 mi1.02 mi27642-5815776-1815776-1828460(Top 98%)16021(Top 98%)16021(Top 280%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 92%
Γ—21
+97ft-345ft

Overall

26795

Males

15514

M18-39

15514

5K→10K

3.1 - 6.2 mi

Top 92%
Γ—5
+79ft-138ft

Overall

26620

Males

15440

M18-39

15440

10K→15K

6.2 - 9.3 mi

Top 92%
Γ—3
+67ft-78ft

Overall

26795

Males

15514

M18-39

15514

15K→20K

9.3 - 12.4 mi

Top 92%
Γ—5
+106ft-86ft

Overall

26747

Males

15466

M18-39

15466

20K→HALF

12.4 - 13.1 mi

Top 94%
Γ—2
+19ft-37ft

Overall

27311

Males

15669

M18-39

15669

HALF→25K

13.1 - 15.5 mi

Top 93%
Γ—4
+66ft-88ft

Overall

26997

Males

15534

M18-39

15534

25K→30K

15.5 - 18.6 mi

Top 96%
Γ—9
+181ft-148ft

Overall

27835

Males

15829

M18-39

15829

30K→20M

18.6 - 20.0 mi

Top 96%
Γ—5
+64ft-50ft

Overall

27762

Males

15752

M18-39

15752

20M→21M

20.0 - 21.0 mi

Top 97%
Γ—8
+106ft-24ft

Overall

28135

Males

15906

M18-39

15906

21M→35K

21.0 - 21.8 mi

Top 99%
Γ—7
+17ft-86ft

Overall

28857

Males

16240

M18-39

16240

35K→23M

21.8 - 23.0 mi

Top 95%
Γ—5
+23ft-63ft

Overall

27680

Males

15675

M18-39

15675

23M→24M

23.0 - 24.0 mi

Top 97%
Γ—6
+12ft-82ft

Overall

28195

Males

15881

M18-39

15881

24M→40K

24.0 - 24.9 mi

Top 95%
Γ—1
+6ft-20ft

Overall

27459

Males

15513

M18-39

15513

40K→25.2M

24.9 - 25.2 mi

Top 99%
Γ—1
+13ft-16ft

Overall

28825

Males

16206

M18-39

16206

25.2M→FINISH

25.2 - 26.2 mi

Top 98%
Γ—2
+22ft-21ft

Overall

28460

Males

16021

M18-39

16021

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
448
Passed By
1629
Net Change
-1647
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#25995
5K β†’ 10K86200-335#25995#26330
10K β†’ 15K73200-189#26330#26519
15K β†’ 20K102143-41#26519#26560
20K β†’ HALF1447-33#26560#26593
HALF β†’ 25K47155-108#26593#26701
25K β†’ 30K29200-354#26701#27055
30K β†’ 20M17105-88#27055#27143
20M β†’ 21M8125-117#27143#27260
21M β†’ 35K2162-160#27260#27420
35K β†’ 23M1962-43#27420#27463
23M β†’ 24M1169-58#27463#27521
24M β†’ 40K3330+3#27521#27518
40K β†’ 25.2M066-66#27518#27584
25.2M β†’ FINISH765-58#27584#27642
TOTALS4481629-1647
πŸ“Š

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

πŸ“ˆPosition Graph

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🎨Heatmap Timeline

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πŸ”„Passing Circle

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🌊Position Flow

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πŸƒRace Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Export & Support

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing