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BOSTON MARATHON 2025

David Blake

Bib: 10509•M

MI

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 (M50-54)
#0 / 1996
Top 18%
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
6:39/mi
20:40
↑ 97↓ 3451.5%
10K· 6.21 mi
6:36/mi
41:10
↑ 79↓ 1380.4%
15K· 9.32 mi
6:41/mi
1:01:56
↑ 67↓ 78
20K· 12.43 mi
6:56/mi
1:23:30
↑ 106↓ 860.1%
Half· 13.11 mi
6:43/mi
1:28:05
↑ 19↓ 370.5%
25K· 15.53 mi
7:02/mi
1:45:08
↑ 66↓ 880.2%
30K· 18.64 mi
7:39/mi
2:08:53
↑ 181↓ 1480.2%
20M
7:51/mi
2:19:33
↑ 64↓ 500.2%
21M
8:23/mi
2:27:56
↑ 106↓ 241.6%
35K· 21.75 mi
7:25/mi
2:33:29
↑ 17↓ 861.7%
23M
7:49/mi
2:43:16
↑ 23↓ 630.6%
24M
7:42/mi
2:50:58
↓ 821.3%
40K· 24.85 mi
8:07/mi
2:57:54
↓ 200.3%
25.2M
8:54/mi
3:00:58
↑ 13↓ 160.2%
Finish· 26.22 mi
7:42/mi
3:08:49
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:05
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:40:44
Pace7:41 /mi
📊Positive Split: 14.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:2520:406:3920:40
6:39
-
10K
6.21 mi11:06:5541:106:3820:30
6:36
-0:03
15K
9.32 mi11:27:411:01:566:3920:46
6:41
+0:05
20K
12.43 mi11:49:151:23:306:4321:34
6:56
+0:15
Half
13.11 mi11:53:501:28:056:434:35
6:43
-0:13
25K
15.53 mi12:10:531:45:086:4617:03
7:02
+0:19
30K
18.64 mi12:34:382:08:536:5523:45
7:39
+0:37
20M
20.00 mi12:45:182:19:336:5910:40
7:51
+0:12
21M
21.00 mi12:53:412:27:567:038:23
8:23
+0:32
35K
21.75 mi12:59:142:33:297:035:33
7:25
-0:58
23M
23.00 mi13:09:012:43:167:069:47
7:49
+0:24
24M
24.00 mi13:16:432:50:587:077:42
7:42
-0:07
40K
24.85 mi13:23:392:57:547:096:56
8:07
+0:25
25.2M
25.20 mi13:26:433:00:587:113:04
8:54
+0:47
Finish
26.22 mi13:34:343:08:497:127:51
7:42
-1:12

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

6:36 /mi

Average Pace

7:12 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:08

56% of race

Time at Steady Pace

1:05:18

35% of race

Time at Slower Pace

18:23

10% 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 mi10:46:2520:406:3920:40
6:39
#5045
10K
6.21 mi11:06:5541:106:3820:30
6:36
#4701
15K
9.32 mi11:27:411:01:566:3920:46
6:41
#4760
20K
12.43 mi11:49:151:23:306:4321:34
6:56
#5156
Half
13.11 mi11:53:501:28:056:434:35
6:43
#5163
25K
15.53 mi12:10:531:45:086:4617:03
7:02
#5441
30K
18.64 mi12:34:382:08:536:5523:45
7:39
#6062
20M
20.00 mi12:45:182:19:336:5910:40
7:51
#6240
21M
21.00 mi12:53:412:27:567:038:23
8:23
#6350
35K
21.75 mi12:59:142:33:297:035:33
7:25
#6362
23M
23.00 mi13:09:012:43:167:069:47
7:49
#6401
24M
24.00 mi13:16:432:50:587:077:42
7:42
#6456
40K
24.85 mi13:23:392:57:547:096:56
8:07
#6547
25.2M
25.20 mi13:26:433:00:587:113:04
8:54
#6605
Finish
26.22 mi13:34:343:08:497:127:51
7:42
#6720
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5045471147114948(Top 17%)4611(Top 29%)4611(Top 231%)
10K6.21 mi3.10 mi4701+3444404+3074404+3074472(Top 16%)4191(Top 26%)4191(Top 210%)
15K9.32 mi3.11 mi4760-594451-474451-474948(Top 17%)4611(Top 29%)4611(Top 231%)
20K12.43 mi3.11 mi5156-3964782-3314782-3316519(Top 23%)5841(Top 36%)5841(Top 293%)
Half13.11 mi0.68 mi5163-74791-94791-95486(Top 19%)5041(Top 31%)5041(Top 253%)
25K15.53 mi2.42 mi5441-2785006-2155006-2156533(Top 23%)5787(Top 36%)5787(Top 290%)
30K18.64 mi3.11 mi6062-6215484-4785484-4788773(Top 31%)7014(Top 44%)7014(Top 351%)
20M20.00 mi1.36 mi6240-1785613-1295613-1299341(Top 33%)7168(Top 45%)7168(Top 359%)
21M21.00 mi1.00 mi6350-1105683-705683-709713(Top 34%)7205(Top 45%)7205(Top 361%)
35K21.75 mi0.75 mi6362-125674+95674+98020(Top 28%)6305(Top 39%)6305(Top 316%)
23M23.00 mi1.25 mi6401-395681-75681-78655(Top 30%)6521(Top 40%)6521(Top 327%)
24M24.00 mi1.00 mi6456-555699-185699-189094(Top 32%)6696(Top 42%)6696(Top 335%)
40K24.85 mi0.85 mi6547-915733-345733-3410872(Top 38%)7482(Top 46%)7482(Top 375%)
25.2M25.20 mi0.35 mi6605-585756-235756-2311102(Top 39%)7508(Top 47%)7508(Top 376%)
Finish26.22 mi1.02 mi6720-1155807-515807-5110685(Top 38%)7340(Top 46%)7340(Top 368%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21story building
+97ft-345ft

Overall

4948

Males

4611

M50-54

4611

5K→10K

3.1 - 6.2 mi

Top 16%
×5story building
+79ft-138ft

Overall

4472

Males

4191

M50-54

4191

10K→15K

6.2 - 9.3 mi

Top 17%
×3story building
+67ft-78ft

Overall

4948

Males

4611

M50-54

4611

15K→20K

9.3 - 12.4 mi

Top 23%
×5story building
+106ft-86ft

Overall

6519

Males

5841

M50-54

5841

20K→Half

12.4 - 13.1 mi

Top 19%
×2story building
+19ft-37ft

Overall

5486

Males

5041

M50-54

5041

Half→25K

13.1 - 15.5 mi

Top 23%
×4story building
+66ft-88ft

Overall

6533

Males

5787

M50-54

5787

25K→30K

15.5 - 18.6 mi

Top 31%
×9story building
+181ft-148ft

Overall

8773

Males

7014

M50-54

7014

30K→20M

18.6 - 20.0 mi

Top 33%
×5story building
+64ft-50ft

Overall

9341

Males

7168

M50-54

7168

20M→21M

20.0 - 21.0 mi

Top 34%
×8story building
+106ft-24ft

Overall

9713

Males

7205

M50-54

7205

21M→35K

21.0 - 21.8 mi

Top 28%
×7story building
+17ft-86ft

Overall

8020

Males

6305

M50-54

6305

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

8655

Males

6521

M50-54

6521

23M→24M

23.0 - 24.0 mi

Top 32%
×6story building
+12ft-82ft

Overall

9094

Males

6696

M50-54

6696

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10872

Males

7482

M50-54

7482

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

11102

Males

7508

M50-54

7508

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10685

Males

7340

M50-54

7340

Passing Analysis

Category:
Athletes Passed
964
Passed By
2639
Net Change
-1675
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5045
5K → 10K38945+344#5045#4701
10K → 15K95154-59#4701#4760
15K → 20K44440-396#4760#5156
20K → Half2431-7#5156#5163
Half → 25K51329-278#5163#5441
25K → 30K58679-621#5441#6062
30K → 20M38216-178#6062#6240
20M → 21M30140-110#6240#6350
21M → 35K3951-12#6350#6362
35K → 23M73112-39#6362#6401
23M → 24M45100-55#6401#6456
24M → 40K33124-91#6456#6547
40K → 25.2M1674-58#6547#6605
25.2M → Finish29144-115#6605#6720
TOTALS9642639-1675
📊

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