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BOSTON MARATHON 2025

David Bailis

Bib: 6424•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 17%
Gender (Male)
#0 / 16105
Top 27%
Masters (Masters Men)
#0 / 10463
Top 13%
Division (M45-49)
#0 / 2386
Top 17%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:57
Rank: #5816
Start → 5K
20:57 | 6:45/mi
10K· 6.21 mi
41:54
Rank: #5766 (+50)
5K → 10K
20:57 | 6:45/mi
15K· 9.32 mi
1:03:01
Rank: #5815 (-49)
10K → 15K
21:07 | 6:48/mi
20K· 12.43 mi
1:24:13
Rank: #5726 (+89)
15K → 20K
21:12 | 6:49/mi
Half· 13.11 mi
1:28:47
Rank: #5698 (+28)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:45:07
Rank: #5425 (+273)
Half → 25K
16:20 | 6:44/mi
30K· 18.64 mi
2:06:32
Rank: #5049 (+376)
25K → 30K
21:25 | 6:54/mi
20M
2:16:01
Rank: #4924 (+125)
30K → 20M
9:29 | 6:59/mi
21M
2:23:30
Rank: #4879 (+45)
20M → 21M
7:29 | 7:29/mi
35K· 21.75 mi
2:28:39
Rank: #4844 (+35)
21M → 35K
5:09 | 6:53/mi
23M
2:37:38
Rank: #4815 (+29)
35K → 23M
8:59 | 7:10/mi
24M
2:44:37
Rank: #4790 (+25)
23M → 24M
6:59 | 6:59/mi
40K· 24.85 mi
2:50:36
Rank: #4734 (+56)
24M → 40K
5:59 | 7:00/mi
25.2M
2:53:13
Rank: #4715 (+19)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
3:00:14
Rank: #4734 (-19)
25.2M → Finish
7:01 | 6:53/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:47
Pace6:46 /mi
2nd Half
Distance13.11 mi
Time1:31:27
Pace6:59 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:5220:576:4520:57
6:45
-
10K
6.21 mi10:47:4941:546:4520:57
6:45
0:00
15K
9.32 mi11:08:561:03:016:4621:07
6:48
+0:03
20K
12.43 mi11:30:081:24:136:4721:12
6:49
+0:01
Half
13.11 mi11:34:421:28:476:464:34
6:42
-0:07
25K
15.53 mi11:51:021:45:076:4616:20
6:44
+0:02
30K
18.64 mi12:12:272:06:326:4721:25
6:54
+0:10
20M
20.00 mi12:21:562:16:016:489:29
6:59
+0:05
21M
21.00 mi12:29:252:23:306:507:29
7:29
+0:30
35K
21.75 mi12:34:342:28:396:505:09
6:53
-0:36
23M
23.00 mi12:43:332:37:386:518:59
7:10
+0:17
24M
24.00 mi12:50:322:44:376:526:59
6:59
-0:11
40K
24.85 mi12:56:312:50:366:525:59
7:00
+0:01
25.2M
25.20 mi12:59:082:53:136:522:37
7:35
+0:35
Finish
26.22 mi13:06:093:00:146:537:01
6:53
-0:42

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

6:42 /mi

Average Pace

6:53 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:08

94% of race

Time at Steady Pace

10:06

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:52 /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 mi10:26:5220:576:4520:57
6:45
#5816
10K
6.21 mi10:47:4941:546:4520:57
6:45
#5766
15K
9.32 mi11:08:561:03:016:4621:07
6:48
#5815
20K
12.43 mi11:30:081:24:136:4721:12
6:49
#5726
Half
13.11 mi11:34:421:28:476:464:34
6:42
#5698
25K
15.53 mi11:51:021:45:076:4616:20
6:44
#5425
30K
18.64 mi12:12:272:06:326:4721:25
6:54
#5049
20M
20.00 mi12:21:562:16:016:489:29
6:59
#4924
21M
21.00 mi12:29:252:23:306:507:29
7:29
#4879
35K
21.75 mi12:34:342:28:396:505:09
6:53
#4844
23M
23.00 mi12:43:332:37:386:518:59
7:10
#4815
24M
24.00 mi12:50:322:44:376:526:59
6:59
#4790
40K
24.85 mi12:56:312:50:366:525:59
7:00
#4734
25.2M
25.20 mi12:59:082:53:136:522:37
7:35
#4715
Finish
26.22 mi13:06:093:00:146:537:01
6:53
#4734
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi5816536153616037(Top 21%)5487(Top 34%)5487(Top 230%)
10K6.21 mi3.10 mi5766+505317+445317+445739(Top 20%)5255(Top 33%)5255(Top 220%)
15K9.32 mi3.11 mi5815-495342-255342-256037(Top 21%)5487(Top 34%)5487(Top 230%)
20K12.43 mi3.11 mi5726+895256+865256+865517(Top 19%)5034(Top 31%)5034(Top 211%)
Half13.11 mi0.68 mi5698+285231+255231+255165(Top 18%)4760(Top 30%)4760(Top 199%)
25K15.53 mi2.42 mi5425+2734993+2384993+2384378(Top 15%)4056(Top 25%)4056(Top 170%)
30K18.64 mi3.11 mi5049+3764653+3404653+3404029(Top 14%)3713(Top 23%)3713(Top 156%)
20M20.00 mi1.36 mi4924+1254547+1064547+1063978(Top 14%)3646(Top 23%)3646(Top 153%)
21M21.00 mi1.00 mi4879+454500+474500+474514(Top 16%)4004(Top 25%)4004(Top 168%)
35K21.75 mi0.75 mi4844+354465+354465+354579(Top 16%)4057(Top 25%)4057(Top 170%)
23M23.00 mi1.25 mi4815+294427+384427+384702(Top 17%)4099(Top 25%)4099(Top 172%)
24M24.00 mi1.00 mi4790+254395+324395+324515(Top 16%)3908(Top 24%)3908(Top 164%)
40K24.85 mi0.85 mi4734+564343+524343+523865(Top 14%)3384(Top 21%)3384(Top 142%)
25.2M25.20 mi0.35 mi4715+194321+224321+223785(Top 13%)3267(Top 20%)3267(Top 137%)
Finish26.22 mi1.02 mi4734-194331-104331-104961(Top 17%)4076(Top 25%)4076(Top 171%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21stories
+97ft-345ft

Overall

6037

Males

5487

M45-49

5487

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5739

Males

5255

M45-49

5255

10K→15K

6.2 - 9.3 mi

Top 21%
×3stories
+67ft-78ft

Overall

6037

Males

5487

M45-49

5487

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5517

Males

5034

M45-49

5034

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

5165

Males

4760

M45-49

4760

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4378

Males

4056

M45-49

4056

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

4029

Males

3713

M45-49

3713

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

3978

Males

3646

M45-49

3646

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4514

Males

4004

M45-49

4004

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4579

Males

4057

M45-49

4057

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4702

Males

4099

M45-49

4099

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4515

Males

3908

M45-49

3908

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3865

Males

3384

M45-49

3384

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3785

Males

3267

M45-49

3267

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4961

Males

4076

M45-49

4076

Passing Analysis

Category:
Athletes Passed
1822
Passed By
740
Net Change
+1082
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5816
5K → 10K203153+50#5816#5766
10K → 15K109158-49#5766#5815
15K → 20K17687+89#5815#5726
20K → Half3911+28#5726#5698
Half → 25K28512+273#5698#5425
25K → 30K39014+376#5425#5049
30K → 20M14520+125#5049#4924
20M → 21M9247+45#4924#4879
21M → 35K6732+35#4879#4844
35K → 23M9465+29#4844#4815
23M → 24M7348+25#4815#4790
24M → 40K8832+56#4790#4734
40K → 25.2M3314+19#4734#4715
25.2M → Finish2847-19#4715#4734
TOTALS1822740+1082
📊

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