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BOSTON MARATHON 2025

Josef Sokolovsky

Bib: 29083•M

GA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 34%
Gender (Male)
#0 / 16105
Top 47%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ 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
7:48/mi
24:14
↑ 97↓ 3451.5%
10K· 6.21 mi
7:13/mi
46:38
↑ 79↓ 1380.4%
15K· 9.32 mi
7:07/mi
1:08:44
↑ 67↓ 78
20K· 12.43 mi
7:26/mi
1:31:51
↑ 106↓ 860.1%
Half· 13.11 mi
7:05/mi
1:36:41
↑ 19↓ 370.5%
25K· 15.53 mi
7:28/mi
1:54:47
↑ 66↓ 880.2%
30K· 18.64 mi
7:53/mi
2:19:16
↑ 181↓ 1480.2%
20M
7:44/mi
2:29:47
↑ 64↓ 500.2%
21M
8:24/mi
2:38:11
↑ 106↓ 241.6%
35K· 21.75 mi
7:53/mi
2:44:05
↑ 17↓ 861.7%
23M
7:56/mi
2:54:01
↑ 23↓ 630.6%
24M
7:36/mi
3:01:37
↓ 821.3%
40K· 24.85 mi
7:43/mi
3:08:13
↓ 200.3%
25.2M
8:10/mi
3:11:02
↑ 13↓ 160.2%
Finish· 26.22 mi
6:54/mi
3:18:04
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:41
Pace7:22 /mi
2nd Half
Distance13.11 mi
Time1:41:23
Pace7:44 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:1224:147:4824:14
7:48
-
10K
6.21 mi12:11:3646:387:3022:24
7:13
-0:35
15K
9.32 mi12:33:421:08:447:2222:06
7:07
-0:06
20K
12.43 mi12:56:491:31:517:2323:07
7:26
+0:19
Half
13.11 mi13:01:391:36:417:224:50
7:05
-0:21
25K
15.53 mi13:19:451:54:477:2318:06
7:28
+0:23
30K
18.64 mi13:44:142:19:167:2824:29
7:53
+0:25
20M
20.00 mi13:54:452:29:477:2910:31
7:44
-0:09
21M
21.00 mi14:03:092:38:117:328:24
8:24
+0:40
35K
21.75 mi14:09:032:44:057:335:54
7:53
-0:31
23M
23.00 mi14:18:592:54:017:349:56
7:56
+0:03
24M
24.00 mi14:26:353:01:377:347:36
7:36
-0:20
40K
24.85 mi14:33:113:08:137:346:36
7:43
+0:07
25.2M
25.20 mi14:36:003:11:027:352:49
8:10
+0:27
Finish
26.22 mi14:43:023:18:047:347:02
6:54
-1:16

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

6:54 /mi

Average Pace

7:34 /mi

Slowest Pace

8:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:37:35

49% of race

Time at Steady Pace

1:19:20

40% of race

Time at Slower Pace

21:09

11% of race

Average Pace: 7:33 /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 mi11:49:1224:147:4824:14
7:48
#14787
10K
6.21 mi12:11:3646:387:3022:24
7:13
#12164
15K
9.32 mi12:33:421:08:447:2222:06
7:07
#10832
20K
12.43 mi12:56:491:31:517:2323:07
7:26
#10671
Half
13.11 mi13:01:391:36:417:224:50
7:05
#10525
25K
15.53 mi13:19:451:54:477:2318:06
7:28
#10351
30K
18.64 mi13:44:142:19:167:2824:29
7:53
#10318
20M
20.00 mi13:54:452:29:477:2910:31
7:44
#10134
21M
21.00 mi14:03:092:38:117:328:24
8:24
#10107
35K
21.75 mi14:09:032:44:057:335:54
7:53
#10129
23M
23.00 mi14:18:592:54:017:349:56
7:56
#10056
24M
24.00 mi14:26:353:01:377:347:36
7:36
#9944
40K
24.85 mi14:33:113:08:137:346:36
7:43
#9844
25.2M
25.20 mi14:36:003:11:027:352:49
8:10
#9774
Finish
26.22 mi14:43:023:18:047:347:02
6:54
#9539
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1478710334103348419(Top 30%)7192(Top 45%)7192(Top 127%)
10K6.21 mi3.10 mi12164+26239235+10999235+10999574(Top 34%)7918(Top 49%)7918(Top 140%)
15K9.32 mi3.11 mi10832+13328564+6718564+6718419(Top 30%)7192(Top 45%)7192(Top 127%)
20K12.43 mi3.11 mi10671+1618460+1048460+10410234(Top 36%)8125(Top 50%)8125(Top 144%)
Half13.11 mi0.68 mi10525+1468386+748386+748176(Top 29%)7015(Top 44%)7015(Top 124%)
25K15.53 mi2.42 mi10351+1748256+1308256+1309665(Top 34%)7676(Top 48%)7676(Top 136%)
30K18.64 mi3.11 mi10318+338181+758181+7510483(Top 37%)7919(Top 49%)7919(Top 140%)
20M20.00 mi1.36 mi10134+1848054+1278054+1278619(Top 30%)6798(Top 42%)6798(Top 120%)
21M21.00 mi1.00 mi10107+277990+647990+649822(Top 35%)7266(Top 45%)7266(Top 129%)
35K21.75 mi0.75 mi10129-227973+177973+1711412(Top 40%)8046(Top 50%)8046(Top 143%)
23M23.00 mi1.25 mi10056+737895+787895+789516(Top 34%)6987(Top 43%)6987(Top 124%)
24M24.00 mi1.00 mi9944+1127804+917804+918399(Top 30%)6328(Top 39%)6328(Top 112%)
40K24.85 mi0.85 mi9844+1007713+917713+918208(Top 29%)6107(Top 38%)6107(Top 108%)
25.2M25.20 mi0.35 mi9774+707660+537660+536864(Top 24%)5283(Top 33%)5283(Top 94%)
Finish26.22 mi1.02 mi9539+2357499+1617499+1615115(Top 18%)4203(Top 26%)4203(Top 74%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21story building
+97ft-345ft

Overall

8419

Males

7192

M18-39

7192

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

9574

Males

7918

M18-39

7918

10K→15K

6.2 - 9.3 mi

Top 30%
×3story building
+67ft-78ft

Overall

8419

Males

7192

M18-39

7192

15K→20K

9.3 - 12.4 mi

Top 36%
×5story building
+106ft-86ft

Overall

10234

Males

8125

M18-39

8125

20K→Half

12.4 - 13.1 mi

Top 29%
×2story building
+19ft-37ft

Overall

8176

Males

7015

M18-39

7015

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9665

Males

7676

M18-39

7676

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

10483

Males

7919

M18-39

7919

30K→20M

18.6 - 20.0 mi

Top 30%
×5story building
+64ft-50ft

Overall

8619

Males

6798

M18-39

6798

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

9822

Males

7266

M18-39

7266

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

11412

Males

8046

M18-39

8046

35K→23M

21.8 - 23.0 mi

Top 34%
×5story building
+23ft-63ft

Overall

9516

Males

6987

M18-39

6987

23M→24M

23.0 - 24.0 mi

Top 30%
×6story building
+12ft-82ft

Overall

8399

Males

6328

M18-39

6328

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8208

Males

6107

M18-39

6107

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6864

Males

5283

M18-39

5283

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2story building
+22ft-21ft

Overall

5115

Males

4203

M18-39

4203

Passing Analysis

Category:
Athletes Passed
5953
Passed By
701
Net Change
+5248
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14787
5K → 10K26274+2623#14787#12164
10K → 15K13320+1332#12164#10832
15K → 20K24887+161#10832#10671
20K → Half1460+146#10671#10525
Half → 25K23965+174#10525#10351
25K → 30K251217+33#10351#10318
30K → 20M21329+184#10318#10134
20M → 21M12294+27#10134#10107
21M → 35K5677-22#10107#10129
35K → 23M13360+73#10129#10056
23M → 24M14028+112#10056#9944
24M → 40K12928+100#9944#9844
40K → 25.2M8010+70#9844#9774
25.2M → Finish2372+235#9774#9539
TOTALS5953701+5248
📊

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