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BOSTON MARATHON 2025

David Basak

Bib: 8573•M

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 24%
Gender (Male)
#0 / 16105
Top 36%
Masters (Masters Men)
#0 / 10463
Top 23%
Division (M40-44)
#0 / 2247
Top 49%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:59
Rank: #5949
Start → 5K
20:59 | 6:45/mi
10K· 6.21 mi
42:14
Rank: #6266 (-317)
5K → 10K
21:15 | 6:50/mi
15K· 9.32 mi
1:03:55
Rank: #6737 (-471)
10K → 15K
21:41 | 6:59/mi
20K· 12.43 mi
1:25:57
Rank: #6953 (-216)
15K → 20K
22:02 | 7:06/mi
Half· 13.11 mi
1:30:41
Rank: #6964 (-11)
20K → Half
4:44 | 6:56/mi
25K· 15.53 mi
1:48:05
Rank: #6989 (-25)
Half → 25K
17:24 | 7:11/mi
30K· 18.64 mi
2:11:07
Rank: #6880 (+109)
25K → 30K
23:02 | 7:25/mi
20M
2:21:17
Rank: #6791 (+89)
30K → 20M
10:10 | 7:29/mi
21M
2:29:06
Rank: #6705 (+86)
20M → 21M
7:49 | 7:49/mi
35K· 21.75 mi
2:35:03
Rank: #6826 (-121)
21M → 35K
5:57 | 7:57/mi
23M
2:44:54
Rank: #6908 (-82)
35K → 23M
9:51 | 7:52/mi
24M
2:52:32
Rank: #6927 (-19)
23M → 24M
7:38 | 7:38/mi
40K· 24.85 mi
2:58:54
Rank: #6860 (+67)
24M → 40K
6:22 | 7:27/mi
25.2M
3:01:42
Rank: #6831 (+29)
40K → 25.2M
2:48 | 8:07/mi
Finish· 26.22 mi
3:08:55
Rank: #6741 (+90)
25.2M → Finish
7:13 | 7:05/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:41
Pace6:55 /mi
2nd Half
Distance13.11 mi
Time1:38:14
Pace7:30 /mi
📊Positive Split: 8.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:2620:596:4520:59
6:45
-
10K
6.21 mi11:07:4142:146:4821:15
6:50
+0:05
15K
9.32 mi11:29:221:03:556:5121:41
6:59
+0:09
20K
12.43 mi11:51:241:25:576:5522:02
7:06
+0:07
Half
13.11 mi11:56:081:30:416:554:44
6:56
-0:10
25K
15.53 mi12:13:321:48:056:5717:24
7:11
+0:15
30K
18.64 mi12:36:342:11:077:0223:02
7:25
+0:14
20M
20.00 mi12:46:442:21:177:0410:10
7:29
+0:04
21M
21.00 mi12:54:332:29:067:067:49
7:49
+0:20
35K
21.75 mi13:00:302:35:037:085:57
7:57
+0:08
23M
23.00 mi13:10:212:44:547:109:51
7:52
-0:05
24M
24.00 mi13:17:592:52:327:117:38
7:38
-0:14
40K
24.85 mi13:24:212:58:547:126:22
7:27
-0:11
25.2M
25.20 mi13:27:093:01:427:132:48
8:07
+0:40
Finish
26.22 mi13:34:223:08:557:137:13
7:05
-1:02

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

6:45 /mi

Average Pace

7:13 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:18

61% of race

Time at Steady Pace

39:34

21% of race

Time at Slower Pace

34:03

18% of race

Average Pace: 7:12 /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 mi10:46:2620:596:4520:59
6:45
#5949
10K
6.21 mi11:07:4142:146:4821:15
6:50
#6266
15K
9.32 mi11:29:221:03:556:5121:41
6:59
#6737
20K
12.43 mi11:51:241:25:576:5522:02
7:06
#6953
Half
13.11 mi11:56:081:30:416:554:44
6:56
#6964
25K
15.53 mi12:13:321:48:056:5717:24
7:11
#6989
30K
18.64 mi12:36:342:11:077:0223:02
7:25
#6880
20M
20.00 mi12:46:442:21:177:0410:10
7:29
#6791
21M
21.00 mi12:54:332:29:067:067:49
7:49
#6705
35K
21.75 mi13:00:302:35:037:085:57
7:57
#6826
23M
23.00 mi13:10:212:44:547:109:51
7:52
#6908
24M
24.00 mi13:17:592:52:327:117:38
7:38
#6927
40K
24.85 mi13:24:212:58:547:126:22
7:27
#6860
25.2M
25.20 mi13:27:093:01:427:132:48
8:07
#6831
Finish
26.22 mi13:34:223:08:557:137:13
7:05
#6741
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5949547554757478(Top 26%)6597(Top 41%)6597(Top 294%)
10K6.21 mi3.10 mi6266-3175737-2625737-2626789(Top 24%)6118(Top 38%)6118(Top 272%)
15K9.32 mi3.11 mi6737-4716076-3396076-3397478(Top 26%)6597(Top 41%)6597(Top 294%)
20K12.43 mi3.11 mi6953-2166241-1656241-1657459(Top 26%)6528(Top 41%)6528(Top 291%)
Half13.11 mi0.68 mi6964-116248-76248-77140(Top 25%)6317(Top 39%)6317(Top 281%)
25K15.53 mi2.42 mi6989-256251-36251-37424(Top 26%)6395(Top 40%)6395(Top 285%)
30K18.64 mi3.11 mi6880+1096117+1346117+1347129(Top 25%)6047(Top 38%)6047(Top 269%)
20M20.00 mi1.36 mi6791+896026+916026+916867(Top 24%)5752(Top 36%)5752(Top 256%)
21M21.00 mi1.00 mi6705+865943+835943+836288(Top 22%)5256(Top 33%)5256(Top 234%)
35K21.75 mi0.75 mi6826-1216016-736016-7311872(Top 42%)8242(Top 51%)8242(Top 367%)
23M23.00 mi1.25 mi6908-826039-236039-239024(Top 32%)6724(Top 42%)6724(Top 299%)
24M24.00 mi1.00 mi6927-196016+236016+238615(Top 30%)6435(Top 40%)6435(Top 286%)
40K24.85 mi0.85 mi6860+675946+705946+706475(Top 23%)5131(Top 32%)5131(Top 228%)
25.2M25.20 mi0.35 mi6831+295916+305916+306575(Top 23%)5104(Top 32%)5104(Top 227%)
Finish26.22 mi1.02 mi6741+905821+955821+956252(Top 22%)4895(Top 30%)4895(Top 218%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21stories
+97ft-345ft

Overall

7478

Males

6597

M40-44

6597

5K→10K

3.1 - 6.2 mi

Top 24%
×5stories
+79ft-138ft

Overall

6789

Males

6118

M40-44

6118

10K→15K

6.2 - 9.3 mi

Top 26%
×3stories
+67ft-78ft

Overall

7478

Males

6597

M40-44

6597

15K→20K

9.3 - 12.4 mi

Top 26%
×5stories
+106ft-86ft

Overall

7459

Males

6528

M40-44

6528

20K→Half

12.4 - 13.1 mi

Top 25%
×2stories
+19ft-37ft

Overall

7140

Males

6317

M40-44

6317

Half→25K

13.1 - 15.5 mi

Top 26%
×4stories
+66ft-88ft

Overall

7424

Males

6395

M40-44

6395

25K→30K

15.5 - 18.6 mi

Top 25%
×9stories
+181ft-148ft

Overall

7129

Males

6047

M40-44

6047

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6867

Males

5752

M40-44

5752

20M→21M

20.0 - 21.0 mi

Top 22%
×8stories
+106ft-24ft

Overall

6288

Males

5256

M40-44

5256

21M→35K

21.0 - 21.8 mi

Top 42%
×7stories
+17ft-86ft

Overall

11872

Males

8242

M40-44

8242

35K→23M

21.8 - 23.0 mi

Top 32%
×5stories
+23ft-63ft

Overall

9024

Males

6724

M40-44

6724

23M→24M

23.0 - 24.0 mi

Top 30%
×6stories
+12ft-82ft

Overall

8615

Males

6435

M40-44

6435

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6475

Males

5131

M40-44

5131

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6575

Males

5104

M40-44

5104

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2stories
+22ft-21ft

Overall

6252

Males

4895

M40-44

4895

Passing Analysis

Category:
Athletes Passed
1217
Passed By
2009
Net Change
-792
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5949
5K → 10K81398-317#5949#6266
10K → 15K50521-471#6266#6737
15K → 20K72288-216#6737#6953
20K → Half1829-11#6953#6964
Half → 25K112137-25#6964#6989
25K → 30K227118+109#6989#6880
30K → 20M13041+89#6880#6791
20M → 21M12034+86#6791#6705
21M → 35K22143-121#6705#6826
35K → 23M73155-82#6826#6908
23M → 24M6180-19#6908#6927
24M → 40K9831+67#6927#6860
40K → 25.2M4213+29#6860#6831
25.2M → Finish11121+90#6831#6741
TOTALS12172009-792
📊

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