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BOSTON MARATHON 2025

David Macdonald

Bib: 26045•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
30:43
Rank: #25318
Start → 5K
30:43 | 9:53/mi
10K· 6.21 mi
1:02:03
Rank: #25412 (-94)
5K → 10K
31:20 | 10:05/mi
15K· 9.32 mi
1:32:34
Rank: #25122 (+290)
10K → 15K
30:31 | 9:49/mi
20K· 12.43 mi
2:04:21
Rank: #25035 (+87)
15K → 20K
31:47 | 10:14/mi
Half· 13.11 mi
2:11:08
Rank: #25005 (+30)
20K → Half
6:47 | 9:57/mi
25K· 15.53 mi
2:36:58
Rank: #24943 (+62)
Half → 25K
25:50 | 10:39/mi
30K· 18.64 mi
3:12:12
Rank: #24886 (+57)
25K → 30K
35:14 | 11:20/mi
20M
3:28:32
Rank: #24931 (-45)
30K → 20M
16:20 | 12:01/mi
21M
3:40:26
Rank: #24849 (+82)
20M → 21M
11:54 | 11:54/mi
35K· 21.75 mi
3:49:20
Rank: #24898 (-49)
21M → 35K
8:54 | 11:54/mi
23M
4:04:54
Rank: #24980 (-82)
35K → 23M
15:34 | 12:26/mi
24M
4:17:21
Rank: #25051 (-71)
23M → 24M
12:27 | 12:27/mi
40K· 24.85 mi
4:27:50
Rank: #25068 (-17)
24M → 40K
10:29 | 12:16/mi
25.2M
4:32:26
Rank: #25075 (-7)
40K → 25.2M
4:36 | 13:20/mi
Finish· 26.22 mi
4:43:47
Rank: #25100 (-25)
25.2M → Finish
11:21 | 11:08/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:08
Pace10:00 /mi
2nd Half
Distance13.11 mi
Time2:32:39
Pace11:39 /mi
📊Positive Split: 16.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:0130:439:5330:43
9:53
-
10K
6.21 mi12:17:211:02:039:5931:20
10:05
+0:12
15K
9.32 mi12:47:521:32:349:5630:31
9:49
-0:16
20K
12.43 mi13:19:392:04:2110:0031:47
10:14
+0:25
Half
13.11 mi13:26:262:11:0810:006:47
9:57
-0:17
25K
15.53 mi13:52:162:36:5810:0625:50
10:39
+0:42
30K
18.64 mi14:27:303:12:1210:1935:14
11:20
+0:41
20M
20.00 mi14:43:503:28:3210:2616:20
12:01
+0:41
21M
21.00 mi14:55:443:40:2610:3011:54
11:54
-0:07
35K
21.75 mi15:04:383:49:2010:338:54
11:54
0:00
23M
23.00 mi15:20:124:04:5410:3915:34
12:26
+0:32
24M
24.00 mi15:32:394:17:2110:4312:27
12:27
+0:01
40K
24.85 mi15:43:084:27:5010:4710:29
12:16
-0:11
25.2M
25.20 mi15:47:444:32:2610:494:36
13:20
+1:04
Finish
26.22 mi15:59:054:43:4710:5011:21
11:08
-2:12

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

9:49 /mi

Average Pace

10:50 /mi

Slowest Pace

13:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:36:58

55% of race

Time at Steady Pace

46:35

16% of race

Time at Slower Pace

1:20:14

28% of race

Average Pace: 10:49 /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 mi11:46:0130:439:5330:43
9:53
#25318
10K
6.21 mi12:17:211:02:039:5931:20
10:05
#25412
15K
9.32 mi12:47:521:32:349:5630:31
9:49
#25122
20K
12.43 mi13:19:392:04:2110:0031:47
10:14
#25035
Half
13.11 mi13:26:262:11:0810:006:47
9:57
#25005
25K
15.53 mi13:52:162:36:5810:0625:50
10:39
#24943
30K
18.64 mi14:27:303:12:1210:1935:14
11:20
#24886
20M
20.00 mi14:43:503:28:3210:2616:20
12:01
#24931
21M
21.00 mi14:55:443:40:2610:3011:54
11:54
#24849
35K
21.75 mi15:04:383:49:2010:338:54
11:54
#24898
23M
23.00 mi15:20:124:04:5410:3915:34
12:26
#24980
24M
24.00 mi15:32:394:17:2110:4312:27
12:27
#25051
40K
24.85 mi15:43:084:27:5010:4710:29
12:16
#25068
25.2M
25.20 mi15:47:444:32:2610:494:36
13:20
#25075
Finish
26.22 mi15:59:054:43:4710:5011:21
11:08
#25100
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi25318148721487224596(Top 87%)14529(Top 90%)14529(Top 647%)
10K6.21 mi3.10 mi25412-9414891-1914891-1925498(Top 90%)14912(Top 93%)14912(Top 664%)
15K9.32 mi3.11 mi25122+29014766+12514766+12524596(Top 87%)14529(Top 90%)14529(Top 647%)
20K12.43 mi3.11 mi25035+8714721+4514721+4524709(Top 87%)14537(Top 90%)14537(Top 647%)
Half13.11 mi0.68 mi25005+3014699+2214699+2224710(Top 87%)14533(Top 90%)14533(Top 647%)
25K15.53 mi2.42 mi24943+6214661+3814661+3824640(Top 87%)14482(Top 90%)14482(Top 645%)
30K18.64 mi3.11 mi24886+5714608+5314608+5324608(Top 87%)14363(Top 89%)14363(Top 639%)
20M20.00 mi1.36 mi24931-45146081460825292(Top 89%)14594(Top 91%)14594(Top 649%)
21M21.00 mi1.00 mi24849+8214560+4814560+4823407(Top 82%)13633(Top 85%)13633(Top 607%)
35K21.75 mi0.75 mi24898-4914579-1914579-1925704(Top 90%)14687(Top 91%)14687(Top 654%)
23M23.00 mi1.25 mi24980-8214598-1914598-1925712(Top 91%)14686(Top 91%)14686(Top 654%)
24M24.00 mi1.00 mi25051-7114621-2314621-2326252(Top 92%)14942(Top 93%)14942(Top 665%)
40K24.85 mi0.85 mi25068-1714620+114620+125327(Top 89%)14430(Top 90%)14430(Top 642%)
25.2M25.20 mi0.35 mi25075-714621-114621-125479(Top 90%)14480(Top 90%)14480(Top 644%)
Finish26.22 mi1.02 mi25100-2514623-214623-225614(Top 90%)14583(Top 91%)14583(Top 649%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21stories
+97ft-345ft

Overall

24596

Males

14529

M40-44

14529

5K→10K

3.1 - 6.2 mi

Top 90%
×5stories
+79ft-138ft

Overall

25498

Males

14912

M40-44

14912

10K→15K

6.2 - 9.3 mi

Top 87%
×3stories
+67ft-78ft

Overall

24596

Males

14529

M40-44

14529

15K→20K

9.3 - 12.4 mi

Top 87%
×5stories
+106ft-86ft

Overall

24709

Males

14537

M40-44

14537

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

24710

Males

14533

M40-44

14533

Half→25K

13.1 - 15.5 mi

Top 87%
×4stories
+66ft-88ft

Overall

24640

Males

14482

M40-44

14482

25K→30K

15.5 - 18.6 mi

Top 87%
×9stories
+181ft-148ft

Overall

24608

Males

14363

M40-44

14363

30K→20M

18.6 - 20.0 mi

Top 89%
×5stories
+64ft-50ft

Overall

25292

Males

14594

M40-44

14594

20M→21M

20.0 - 21.0 mi

Top 82%
×8stories
+106ft-24ft

Overall

23407

Males

13633

M40-44

13633

21M→35K

21.0 - 21.8 mi

Top 90%
×7stories
+17ft-86ft

Overall

25704

Males

14687

M40-44

14687

35K→23M

21.8 - 23.0 mi

Top 91%
×5stories
+23ft-63ft

Overall

25712

Males

14686

M40-44

14686

23M→24M

23.0 - 24.0 mi

Top 92%
×6stories
+12ft-82ft

Overall

26252

Males

14942

M40-44

14942

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

25327

Males

14430

M40-44

14430

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

25479

Males

14480

M40-44

14480

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2stories
+22ft-21ft

Overall

25614

Males

14583

M40-44

14583

Passing Analysis

Category:
Athletes Passed
1235
Passed By
1017
Net Change
+218
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25318
5K → 10K152246-94#25318#25412
10K → 15K32535+290#25412#25122
15K → 20K16982+87#25122#25035
20K → Half4414+30#25035#25005
Half → 25K13573+62#25005#24943
25K → 30K15093+57#24943#24886
30K → 20M4388-45#24886#24931
20M → 21M10220+82#24931#24849
21M → 35K2069-49#24849#24898
35K → 23M21103-82#24898#24980
23M → 24M1788-71#24980#25051
24M → 40K2744-17#25051#25068
40K → 25.2M1320-7#25068#25075
25.2M → Finish1742-25#25075#25100
TOTALS12351017+218
📊

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