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BOSTON MARATHON 2025

Brad Marks

Bib: 31335•M

CO

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:17
Rank: #21403
Start → 5K
27:17 | 8:47/mi
10K· 6.21 mi
54:19
Rank: #21112 (+291)
5K → 10K
27:02 | 8:42/mi
15K· 9.32 mi
1:22:38
Rank: #21627 (-515)
10K → 15K
28:19 | 9:07/mi
20K· 12.43 mi
1:52:39
Rank: #22217 (-590)
15K → 20K
30:01 | 9:40/mi
Half· 13.11 mi
1:59:08
Rank: #22294 (-77)
20K → Half
6:29 | 9:30/mi
25K· 15.53 mi
2:23:42
Rank: #22614 (-320)
Half → 25K
24:34 | 10:08/mi
30K· 18.64 mi
2:55:16
Rank: #22496 (+118)
25K → 30K
31:34 | 10:10/mi
20M
3:08:27
Rank: #22316 (+180)
30K → 20M
13:11 | 9:42/mi
21M
3:19:05
Rank: #22173 (+143)
20M → 21M
10:38 | 10:38/mi
35K· 21.75 mi
3:26:05
Rank: #22088 (+85)
21M → 35K
7:00 | 9:21/mi
23M
3:38:47
Rank: #22002 (+86)
35K → 23M
12:42 | 10:09/mi
24M
3:48:48
Rank: #21966 (+36)
23M → 24M
10:01 | 10:01/mi
40K· 24.85 mi
3:56:53
Rank: #21838 (+128)
24M → 40K
8:05 | 9:27/mi
25.2M
4:00:27
Rank: #21786 (+52)
40K → 25.2M
3:34 | 10:21/mi
Finish· 26.22 mi
4:08:48
Rank: #21585 (+201)
25.2M → Finish
8:21 | 8:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:08
Pace9:05 /mi
2nd Half
Distance13.11 mi
Time2:09:40
Pace9:53 /mi
📊Positive Split: 8.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:4027:178:4727:17
8:47
-
10K
6.21 mi12:15:4254:198:4427:02
8:42
-0:05
15K
9.32 mi12:44:011:22:388:5228:19
9:07
+0:25
20K
12.43 mi13:14:021:52:399:0430:01
9:40
+0:33
Half
13.11 mi13:20:311:59:089:056:29
9:30
-0:10
25K
15.53 mi13:45:052:23:429:1524:34
10:08
+0:38
30K
18.64 mi14:16:392:55:169:2431:34
10:10
+0:02
20M
20.00 mi14:29:503:08:279:2513:11
9:42
-0:28
21M
21.00 mi14:40:283:19:059:2910:38
10:38
+0:56
35K
21.75 mi14:47:283:26:059:297:00
9:21
-1:17
23M
23.00 mi15:00:103:38:479:3112:42
10:09
+0:48
24M
24.00 mi15:10:113:48:489:3210:01
10:01
-0:08
40K
24.85 mi15:18:163:56:539:328:05
9:27
-0:34
25.2M
25.20 mi15:21:504:00:279:333:34
10:21
+0:54
Finish
26.22 mi15:30:114:08:489:308:21
8:12
-2:09

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

8:12 /mi

Average Pace

9:30 /mi

Slowest Pace

10:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:30:59

37% of race

Time at Steady Pace

1:04:46

26% of race

Time at Slower Pace

1:33:03

37% of race

Average Pace: 9:29 /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 mi11:48:4027:178:4727:17
8:47
#21403
10K
6.21 mi12:15:4254:198:4427:02
8:42
#21112
15K
9.32 mi12:44:011:22:388:5228:19
9:07
#21627
20K
12.43 mi13:14:021:52:399:0430:01
9:40
#22217
Half
13.11 mi13:20:311:59:089:056:29
9:30
#22294
25K
15.53 mi13:45:052:23:429:1524:34
10:08
#22614
30K
18.64 mi14:16:392:55:169:2431:34
10:10
#22496
20M
20.00 mi14:29:503:08:279:2513:11
9:42
#22316
21M
21.00 mi14:40:283:19:059:2910:38
10:38
#22173
35K
21.75 mi14:47:283:26:059:297:00
9:21
#22088
23M
23.00 mi15:00:103:38:479:3112:42
10:09
#22002
24M
24.00 mi15:10:113:48:489:3210:01
10:01
#21966
40K
24.85 mi15:18:163:56:539:328:05
9:27
#21838
25.2M
25.20 mi15:21:504:00:279:333:34
10:21
#21786
Finish
26.22 mi15:30:114:08:489:308:21
8:12
#21585
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi21403130411304122514(Top 79%)13611(Top 85%)13611(Top 570%)
10K6.21 mi3.10 mi21112+29112942+9912942+9920867(Top 73%)12859(Top 80%)12859(Top 539%)
15K9.32 mi3.11 mi21627-51513184-24213184-24222514(Top 79%)13611(Top 85%)13611(Top 570%)
20K12.43 mi3.11 mi22217-59013446-26213446-26223376(Top 82%)13965(Top 87%)13965(Top 585%)
Half13.11 mi0.68 mi22294-7713470-2413470-2423554(Top 83%)14031(Top 87%)14031(Top 588%)
25K15.53 mi2.42 mi22614-32013619-14913619-14923574(Top 83%)13993(Top 87%)13993(Top 586%)
30K18.64 mi3.11 mi22496+11813524+9513524+9522087(Top 78%)13216(Top 82%)13216(Top 554%)
20M20.00 mi1.36 mi22316+18013429+9513429+9519938(Top 70%)12137(Top 75%)12137(Top 509%)
21M21.00 mi1.00 mi22173+14313350+7913350+7920396(Top 72%)12214(Top 76%)12214(Top 512%)
35K21.75 mi0.75 mi22088+8513304+4613304+4619792(Top 70%)11876(Top 74%)11876(Top 498%)
23M23.00 mi1.25 mi22002+8613225+7913225+7920937(Top 74%)12369(Top 77%)12369(Top 518%)
24M24.00 mi1.00 mi21966+3613190+3513190+3521411(Top 75%)12545(Top 78%)12545(Top 526%)
40K24.85 mi0.85 mi21838+12813107+8313107+8318525(Top 65%)11092(Top 69%)11092(Top 465%)
25.2M25.20 mi0.35 mi21786+5213080+2713080+2718449(Top 65%)11057(Top 69%)11057(Top 463%)
Finish26.22 mi1.02 mi21585+20112981+9912981+9914229(Top 50%)9139(Top 57%)9139(Top 383%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21stories
+97ft-345ft

Overall

22514

Males

13611

M45-49

13611

5K→10K

3.1 - 6.2 mi

Top 73%
×5stories
+79ft-138ft

Overall

20867

Males

12859

M45-49

12859

10K→15K

6.2 - 9.3 mi

Top 79%
×3stories
+67ft-78ft

Overall

22514

Males

13611

M45-49

13611

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

23376

Males

13965

M45-49

13965

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

23554

Males

14031

M45-49

14031

Half→25K

13.1 - 15.5 mi

Top 83%
×4stories
+66ft-88ft

Overall

23574

Males

13993

M45-49

13993

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

22087

Males

13216

M45-49

13216

30K→20M

18.6 - 20.0 mi

Top 70%
×5stories
+64ft-50ft

Overall

19938

Males

12137

M45-49

12137

20M→21M

20.0 - 21.0 mi

Top 72%
×8stories
+106ft-24ft

Overall

20396

Males

12214

M45-49

12214

21M→35K

21.0 - 21.8 mi

Top 70%
×7stories
+17ft-86ft

Overall

19792

Males

11876

M45-49

11876

35K→23M

21.8 - 23.0 mi

Top 74%
×5stories
+23ft-63ft

Overall

20937

Males

12369

M45-49

12369

23M→24M

23.0 - 24.0 mi

Top 75%
×6stories
+12ft-82ft

Overall

21411

Males

12545

M45-49

12545

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

18525

Males

11092

M45-49

11092

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

18449

Males

11057

M45-49

11057

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

14229

Males

9139

M45-49

9139

Passing Analysis

Category:
Athletes Passed
1931
Passed By
2113
Net Change
-182
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21403
5K → 10K458167+291#21403#21112
10K → 15K80595-515#21112#21627
15K → 20K64654-590#21627#22217
20K → Half1491-77#22217#22294
Half → 25K59379-320#22294#22614
25K → 30K232114+118#22614#22496
30K → 20M1899+180#22496#22316
20M → 21M15916+143#22316#22173
21M → 35K949+85#22173#22088
35K → 23M12236+86#22088#22002
23M → 24M7337+36#22002#21966
24M → 40K1313+128#21966#21838
40K → 25.2M553+52#21838#21786
25.2M → Finish2010+201#21786#21585
TOTALS19312113-182
📊

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