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BOSTON MARATHON 2025

Daniel Sokoloff

Bib: 26451•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:06
Rank: #21105
Start → 5K
8:43/mi
27:06 split
10K· 6.21 mi
55:26
Rank: #22054 (-949)
5K → 10K
9:07/mi
28:20 split
15K· 9.32 mi
1:23:54
Rank: #22285 (-231)
10K → 15K
9:10/mi
28:28 split
20K· 12.43 mi
1:53:06
Rank: #22363 (-78)
15K → 20K
9:24/mi
29:12 split
Half· 13.11 mi
1:59:15
Rank: #22329 (+34)
20K → Half
9:01/mi
6:09 split
25K· 15.53 mi
2:23:01
Rank: #22455 (-126)
Half → 25K
9:48/mi
23:46 split
30K· 18.64 mi
2:54:32
Rank: #22371 (+84)
25K → 30K
10:09/mi
31:31 split
20M
3:08:51
Rank: #22386 (-15)
30K → 20M
10:32/mi
14:19 split
21M
3:20:01
Rank: #22325 (+61)
20M → 21M
11:10/mi
11:10 split
35K· 21.75 mi
3:27:28
Rank: #22306 (+19)
21M → 35K
9:57/mi
7:27 split
23M
3:40:08
Rank: #22193 (+113)
35K → 23M
10:07/mi
12:40 split
24M
3:49:59
Rank: #22128 (+65)
23M → 24M
9:51/mi
9:51 split
40K· 24.85 mi
3:58:16
Rank: #22021 (+107)
24M → 40K
9:41/mi
8:17 split
25.2M
4:02:05
Rank: #21996 (+25)
40K → 25.2M
11:04/mi
3:49 split
Finish· 26.22 mi
4:11:35
Rank: #21936 (+60)
25.2M → Finish
9:19/mi
9:30 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:15
Pace9:06 /mi
2nd Half
Distance13.11 mi
Time2:12:20
Pace10:06 /mi
📊Positive Split: 11.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:3327:068:4327:06
8:43
-
10K
6.21 mi12:10:5355:268:5528:20
9:07
+0:24
15K
9.32 mi12:39:211:23:549:0028:28
9:10
+0:03
20K
12.43 mi13:08:331:53:069:0629:12
9:24
+0:14
Half
13.11 mi13:14:421:59:159:066:09
9:01
-0:23
25K
15.53 mi13:38:282:23:019:1223:46
9:48
+0:47
30K
18.64 mi14:09:592:54:329:2231:31
10:09
+0:21
20M
20.00 mi14:24:183:08:519:2714:19
10:32
+0:23
21M
21.00 mi14:35:283:20:019:3111:10
11:10
+0:38
35K
21.75 mi14:42:553:27:289:327:27
9:57
-1:13
23M
23.00 mi14:55:353:40:089:3412:40
10:07
+0:10
24M
24.00 mi15:05:263:49:599:359:51
9:51
-0:16
40K
24.85 mi15:13:433:58:169:358:17
9:41
-0:10
25.2M
25.20 mi15:17:324:02:059:363:49
11:04
+1:23
Finish
26.22 mi15:27:024:11:359:369:30
9:19
-1:45

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

8:43 /mi

Average Pace

9:36 /mi

Slowest Pace

11:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:08:45

51% of race

Time at Steady Pace

1:02:01

25% of race

Time at Slower Pace

1:00:49

24% of race

Average Pace: 9:36 /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 mi11:42:3327:068:4327:06
8:43
#21105
10K
6.21 mi12:10:5355:268:5528:20
9:07
#22054
15K
9.32 mi12:39:211:23:549:0028:28
9:10
#22285
20K
12.43 mi13:08:331:53:069:0629:12
9:24
#22363
Half
13.11 mi13:14:421:59:159:066:09
9:01
#22329
25K
15.53 mi13:38:282:23:019:1223:46
9:48
#22455
30K
18.64 mi14:09:592:54:329:2231:31
10:09
#22371
20M
20.00 mi14:24:183:08:519:2714:19
10:32
#22386
21M
21.00 mi14:35:283:20:019:3111:10
11:10
#22325
35K
21.75 mi14:42:553:27:289:327:27
9:57
#22306
23M
23.00 mi14:55:353:40:089:3412:40
10:07
#22193
24M
24.00 mi15:05:263:49:599:359:51
9:51
#22128
40K
24.85 mi15:13:433:58:169:358:17
9:41
#22021
25.2M
25.20 mi15:17:324:02:059:363:49
11:04
#21996
Finish
26.22 mi15:27:024:11:359:369:30
9:19
#21936
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi21105129101291022721(Top 80%)13701(Top 85%)13701(Top 610%)
10K6.21 mi3.10 mi22054-94913349-43913349-43922888(Top 81%)13762(Top 85%)13762(Top 612%)
15K9.32 mi3.11 mi22285-23113479-13013479-13022721(Top 80%)13701(Top 85%)13701(Top 610%)
20K12.43 mi3.11 mi22363-7813507-2813507-2822575(Top 79%)13610(Top 85%)13610(Top 606%)
Half13.11 mi0.68 mi22329+3413488+1913488+1921868(Top 77%)13292(Top 83%)13292(Top 592%)
25K15.53 mi2.42 mi22455-12613553-6513553-6522765(Top 80%)13636(Top 85%)13636(Top 607%)
30K18.64 mi3.11 mi22371+8413477+7613477+7622037(Top 78%)13186(Top 82%)13186(Top 587%)
20M20.00 mi1.36 mi22386-1513458+1913458+1922523(Top 79%)13298(Top 83%)13298(Top 592%)
21M21.00 mi1.00 mi22325+6113418+4013418+4021802(Top 77%)12882(Top 80%)12882(Top 573%)
35K21.75 mi0.75 mi22306+1913390+2813390+2821777(Top 77%)12802(Top 79%)12802(Top 570%)
23M23.00 mi1.25 mi22193+11313304+8613304+8620862(Top 73%)12325(Top 77%)12325(Top 549%)
24M24.00 mi1.00 mi22128+6513260+4413260+4420890(Top 74%)12292(Top 76%)12292(Top 547%)
40K24.85 mi0.85 mi22021+10713196+6413196+6419425(Top 68%)11531(Top 72%)11531(Top 513%)
25.2M25.20 mi0.35 mi21996+2513178+1813178+1820835(Top 73%)12211(Top 76%)12211(Top 543%)
Finish26.22 mi1.02 mi21936+6013138+4013138+4020469(Top 72%)12044(Top 75%)12044(Top 536%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

22721

Males

13701

M40-44

13701

5K→10K

3.1 - 6.2 mi

Top 81%
×5story building
+79ft-138ft

Overall

22888

Males

13762

M40-44

13762

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

22721

Males

13701

M40-44

13701

15K→20K

9.3 - 12.4 mi

Top 79%
×5story building
+106ft-86ft

Overall

22575

Males

13610

M40-44

13610

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

21868

Males

13292

M40-44

13292

Half→25K

13.1 - 15.5 mi

Top 80%
×4story building
+66ft-88ft

Overall

22765

Males

13636

M40-44

13636

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

22037

Males

13186

M40-44

13186

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

22523

Males

13298

M40-44

13298

20M→21M

20.0 - 21.0 mi

Top 77%
×8story building
+106ft-24ft

Overall

21802

Males

12882

M40-44

12882

21M→35K

21.0 - 21.8 mi

Top 77%
×7story building
+17ft-86ft

Overall

21777

Males

12802

M40-44

12802

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

20862

Males

12325

M40-44

12325

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

20890

Males

12292

M40-44

12292

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19425

Males

11531

M40-44

11531

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

20835

Males

12211

M40-44

12211

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2story building
+22ft-21ft

Overall

20469

Males

12044

M40-44

12044

Passing Analysis

Category:
Athletes Passed
1354
Passed By
2185
Net Change
-831
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21105
5K → 10K50999-949#21105#22054
10K → 15K121352-231#22054#22285
15K → 20K153231-78#22285#22363
20K → Half4713+34#22363#22329
Half → 25K104230-126#22329#22455
25K → 30K217133+84#22455#22371
30K → 20M6883-15#22371#22386
20M → 21M10443+61#22386#22325
21M → 35K4829+19#22325#22306
35K → 23M13219+113#22306#22193
23M → 24M7611+65#22193#22128
24M → 40K11912+107#22128#22021
40K → 25.2M3914+25#22021#21996
25.2M → Finish7616+60#21996#21936
TOTALS13542185-831
📊

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