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BOSTON MARATHON 2025

Jack Belobrajdic

Bib: 4591•M

OR

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 17%
Gender (Male)
#0 / 16105
Top 27%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
20:20
Rank: #4159
Start → 5K
20:20 | 6:33/mi
10K· 6.21 mi
40:35
Rank: #3987 (+172)
5K → 10K
20:15 | 6:31/mi
15K· 9.32 mi
1:00:43
Rank: #3793 (+194)
10K → 15K
20:08 | 6:29/mi
20K· 12.43 mi
1:21:15
Rank: #3751 (+42)
15K → 20K
20:32 | 6:37/mi
Half· 13.11 mi
1:25:46
Rank: #3787 (-36)
20K → Half
4:31 | 6:37/mi
25K· 15.53 mi
1:41:57
Rank: #3767 (+20)
Half → 25K
16:11 | 6:40/mi
30K· 18.64 mi
2:03:29
Rank: #3782 (-15)
25K → 30K
21:32 | 6:56/mi
20M
2:13:13
Rank: #3839 (-57)
30K → 20M
9:44 | 7:10/mi
21M
2:20:52
Rank: #3905 (-66)
20M → 21M
7:39 | 7:39/mi
35K· 21.75 mi
2:26:21
Rank: #4032 (-127)
21M → 35K
5:29 | 7:20/mi
23M
2:35:57
Rank: #4242 (-210)
35K → 23M
9:36 | 7:40/mi
24M
2:43:52
Rank: #4531 (-289)
23M → 24M
7:55 | 7:55/mi
40K· 24.85 mi
2:50:41
Rank: #4762 (-231)
24M → 40K
6:49 | 7:58/mi
25.2M
2:53:32
Rank: #4810 (-48)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
3:00:39
Rank: #4834 (-24)
25.2M → Finish
7:07 | 6:59/mi

Course Map & Elevation

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:46
Pace6:33 /mi
2nd Half
Distance13.11 mi
Time1:34:53
Pace7:14 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:2620:206:3320:20
6:33
-
10K
6.21 mi10:43:4140:356:3220:15
6:31
-0:02
15K
9.32 mi11:03:491:00:436:3120:08
6:29
-0:02
20K
12.43 mi11:24:211:21:156:3220:32
6:37
+0:08
Half
13.11 mi11:28:521:25:466:334:31
6:37
0:00
25K
15.53 mi11:45:031:41:576:3416:11
6:40
+0:03
30K
18.64 mi12:06:352:03:296:3721:32
6:56
+0:16
20M
20.00 mi12:16:192:13:136:409:44
7:10
+0:14
21M
21.00 mi12:23:582:20:526:427:39
7:39
+0:29
35K
21.75 mi12:29:272:26:216:445:29
7:20
-0:19
23M
23.00 mi12:39:032:35:576:479:36
7:40
+0:20
24M
24.00 mi12:46:582:43:526:507:55
7:55
+0:15
40K
24.85 mi12:53:472:50:416:526:49
7:58
+0:03
25.2M
25.20 mi12:56:382:53:326:532:51
8:16
+0:18
Finish
26.22 mi13:03:453:00:396:547:07
6:59
-1:17

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

6:29 /mi

Average Pace

6:54 /mi

Slowest Pace

8:16 /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

1:41:57

56% of race

Time at Steady Pace

38:23

21% of race

Time at Slower Pace

40:19

22% of race

Average Pace: 6:53 /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 mi10:23:2620:206:3320:20
6:33
#4159
10K
6.21 mi10:43:4140:356:3220:15
6:31
#3987
15K
9.32 mi11:03:491:00:436:3120:08
6:29
#3793
20K
12.43 mi11:24:211:21:156:3220:32
6:37
#3751
Half
13.11 mi11:28:521:25:466:334:31
6:37
#3787
25K
15.53 mi11:45:031:41:576:3416:11
6:40
#3767
30K
18.64 mi12:06:352:03:296:3721:32
6:56
#3782
20M
20.00 mi12:16:192:13:136:409:44
7:10
#3839
21M
21.00 mi12:23:582:20:526:427:39
7:39
#3905
35K
21.75 mi12:29:272:26:216:445:29
7:20
#4032
23M
23.00 mi12:39:032:35:576:479:36
7:40
#4242
24M
24.00 mi12:46:582:43:526:507:55
7:55
#4531
40K
24.85 mi12:53:472:50:416:526:49
7:58
#4762
25.2M
25.20 mi12:56:382:53:326:532:51
8:16
#4810
Finish
26.22 mi13:03:453:00:396:547:07
6:59
#4834
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4159392039203443(Top 12%)3263(Top 20%)3263(Top 58%)
10K6.21 mi3.10 mi3987+1723768+1523768+1523864(Top 14%)3641(Top 23%)3641(Top 65%)
15K9.32 mi3.11 mi3793+1943584+1843584+1843443(Top 12%)3263(Top 20%)3263(Top 58%)
20K12.43 mi3.11 mi3751+423541+433541+433752(Top 13%)3542(Top 22%)3542(Top 63%)
Half13.11 mi0.68 mi3787-363572-313572-314547(Top 16%)4240(Top 26%)4240(Top 75%)
25K15.53 mi2.42 mi3767+203552+203552+203941(Top 14%)3680(Top 23%)3680(Top 65%)
30K18.64 mi3.11 mi3782-153565-133565-134270(Top 15%)3920(Top 24%)3920(Top 69%)
20M20.00 mi1.36 mi3839-573611-463611-464978(Top 18%)4463(Top 28%)4463(Top 79%)
21M21.00 mi1.00 mi3905-663662-513662-515358(Top 19%)4628(Top 29%)4628(Top 82%)
35K21.75 mi0.75 mi4032-1273766-1043766-1047352(Top 26%)5886(Top 37%)5886(Top 104%)
23M23.00 mi1.25 mi4242-2103940-1743940-1747649(Top 27%)5951(Top 37%)5951(Top 105%)
24M24.00 mi1.00 mi4531-2894177-2374177-23710612(Top 37%)7468(Top 46%)7468(Top 132%)
40K24.85 mi0.85 mi4762-2314368-1914368-1919944(Top 35%)7000(Top 43%)7000(Top 124%)
25.2M25.20 mi0.35 mi4810-484403-354403-357320(Top 26%)5485(Top 34%)5485(Top 97%)
Finish26.22 mi1.02 mi4834-244415-124415-125597(Top 20%)4468(Top 28%)4468(Top 79%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3443

Males

3263

M18-39

3263

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3864

Males

3641

M18-39

3641

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3443

Males

3263

M18-39

3263

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3752

Males

3542

M18-39

3542

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4547

Males

4240

M18-39

4240

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3941

Males

3680

M18-39

3680

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4270

Males

3920

M18-39

3920

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

4978

Males

4463

M18-39

4463

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

5358

Males

4628

M18-39

4628

21M→35K

21.0 - 21.8 mi

Top 26%
×7stories
+17ft-86ft

Overall

7352

Males

5886

M18-39

5886

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7649

Males

5951

M18-39

5951

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

10612

Males

7468

M18-39

7468

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9944

Males

7000

M18-39

7000

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

7320

Males

5485

M18-39

5485

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5597

Males

4468

M18-39

4468

Passing Analysis

Category:
Athletes Passed
1001
Passed By
1676
Net Change
-675
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4159
5K → 10K25987+172#4159#3987
10K → 15K21319+194#3987#3793
15K → 20K11371+42#3793#3751
20K → Half743-36#3751#3787
Half → 25K9070+20#3787#3767
25K → 30K99114-15#3767#3782
30K → 20M45102-57#3782#3839
20M → 21M40106-66#3839#3905
21M → 35K18145-127#3905#4032
35K → 23M29239-210#4032#4242
23M → 24M16305-289#4242#4531
24M → 40K17248-231#4531#4762
40K → 25.2M1361-48#4762#4810
25.2M → Finish4266-24#4810#4834
TOTALS10011676-675
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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