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BOSTON MARATHON 2025

David Mackay

Bib: 11110•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 22%
Gender (Male)
#0 / 16105
Top 35%
Masters (Masters Men)
#0 / 10463
Top 21%
Division (M50-54)
#0 / 1996
Top 16%
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
7:06/mi
22:04
↑ 97↓ 3451.5%
10K· 6.21 mi
6:56/mi
43:36
↑ 79↓ 1380.4%
15K· 9.32 mi
6:57/mi
1:05:11
↑ 67↓ 78
20K· 12.43 mi
7:00/mi
1:26:57
↑ 106↓ 860.1%
Half· 13.11 mi
6:53/mi
1:31:39
↑ 19↓ 370.5%
25K· 15.53 mi
6:59/mi
1:48:35
↑ 66↓ 880.2%
30K· 18.64 mi
7:07/mi
2:10:42
↑ 181↓ 1480.2%
20M
7:17/mi
2:20:36
↑ 64↓ 500.2%
21M
7:42/mi
2:28:18
↑ 106↓ 241.6%
35K· 21.75 mi
6:53/mi
2:33:27
↑ 17↓ 861.7%
23M
7:28/mi
2:42:48
↑ 23↓ 630.6%
24M
7:21/mi
2:50:09
↓ 821.3%
40K· 24.85 mi
8:00/mi
2:56:59
↓ 200.3%
25.2M
9:05/mi
3:00:07
↑ 13↓ 160.2%
Finish· 26.22 mi
7:13/mi
3:07:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:39
Pace6:59 /mi
2nd Half
Distance13.11 mi
Time1:35:49
Pace7:19 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:3022:047:0622:04
7:06
-
10K
6.21 mi11:10:0243:367:0121:32
6:56
-0:10
15K
9.32 mi11:31:371:05:117:0021:35
6:57
+0:01
20K
12.43 mi11:53:231:26:577:0021:46
7:00
+0:03
Half
13.11 mi11:58:051:31:396:594:42
6:53
-0:07
25K
15.53 mi12:15:011:48:356:5916:56
6:59
+0:06
30K
18.64 mi12:37:082:10:427:0122:07
7:07
+0:08
20M
20.00 mi12:47:022:20:367:029:54
7:17
+0:10
21M
21.00 mi12:54:442:28:187:047:42
7:42
+0:25
35K
21.75 mi12:59:532:33:277:035:09
6:53
-0:49
23M
23.00 mi13:09:142:42:487:059:21
7:28
+0:35
24M
24.00 mi13:16:352:50:097:057:21
7:21
-0:07
40K
24.85 mi13:23:252:56:597:076:50
8:00
+0:39
25.2M
25.20 mi13:26:333:00:077:093:08
9:05
+1:05
Finish
26.22 mi13:33:543:07:287:097:21
7:13
-1:52

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

6:53 /mi

Average Pace

7:09 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:40:27

86% of race

Time at Slower Pace

27:01

14% of race

Average Pace: 7:09 /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 mi10:48:3022:047:0622:04
7:06
#8647
10K
6.21 mi11:10:0243:367:0121:32
6:56
#7967
15K
9.32 mi11:31:371:05:117:0021:35
6:57
#7708
20K
12.43 mi11:53:231:26:577:0021:46
7:00
#7478
Half
13.11 mi11:58:051:31:396:594:42
6:53
#7432
25K
15.53 mi12:15:011:48:356:5916:56
6:59
#7190
30K
18.64 mi12:37:082:10:427:0122:07
7:07
#6740
20M
20.00 mi12:47:022:20:367:029:54
7:17
#6567
21M
21.00 mi12:54:442:28:187:047:42
7:42
#6449
35K
21.75 mi12:59:532:33:277:035:09
6:53
#6352
23M
23.00 mi13:09:142:42:487:059:21
7:28
#6295
24M
24.00 mi13:16:352:50:097:057:21
7:21
#6251
40K
24.85 mi13:23:252:56:597:076:50
8:00
#6329
25.2M
25.20 mi13:26:333:00:077:093:08
9:05
#6381
Finish
26.22 mi13:33:543:07:287:097:21
7:13
#6349
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi8647740574057269(Top 26%)6447(Top 40%)6447(Top 323%)
10K6.21 mi3.10 mi7967+6806961+4446961+4447459(Top 26%)6606(Top 41%)6606(Top 331%)
15K9.32 mi3.11 mi7708+2596782+1796782+1797269(Top 26%)6447(Top 40%)6447(Top 323%)
20K12.43 mi3.11 mi7478+2306614+1686614+1686888(Top 24%)6121(Top 38%)6121(Top 307%)
Half13.11 mi0.68 mi7432+466581+336581+336769(Top 24%)6034(Top 37%)6034(Top 302%)
25K15.53 mi2.42 mi7190+2426391+1906391+1906213(Top 22%)5553(Top 34%)5553(Top 278%)
30K18.64 mi3.11 mi6740+4506012+3796012+3795420(Top 19%)4871(Top 30%)4871(Top 244%)
20M20.00 mi1.36 mi6567+1735857+1555857+1555675(Top 20%)4955(Top 31%)4955(Top 248%)
21M21.00 mi1.00 mi6449+1185754+1035754+1035622(Top 20%)4815(Top 30%)4815(Top 241%)
35K21.75 mi0.75 mi6352+975668+865668+864613(Top 16%)4091(Top 25%)4091(Top 205%)
23M23.00 mi1.25 mi6295+575601+675601+676414(Top 23%)5227(Top 32%)5227(Top 262%)
24M24.00 mi1.00 mi6251+445550+515550+516686(Top 24%)5333(Top 33%)5333(Top 267%)
40K24.85 mi0.85 mi6329-785586-365586-3610086(Top 36%)7077(Top 44%)7077(Top 355%)
25.2M25.20 mi0.35 mi6381-525608-225608-2212152(Top 43%)8036(Top 50%)8036(Top 403%)
Finish26.22 mi1.02 mi6349+325561+475561+477092(Top 25%)5379(Top 33%)5379(Top 269%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21story building
+97ft-345ft

Overall

7269

Males

6447

M50-54

6447

5K→10K

3.1 - 6.2 mi

Top 26%
×5story building
+79ft-138ft

Overall

7459

Males

6606

M50-54

6606

10K→15K

6.2 - 9.3 mi

Top 26%
×3story building
+67ft-78ft

Overall

7269

Males

6447

M50-54

6447

15K→20K

9.3 - 12.4 mi

Top 24%
×5story building
+106ft-86ft

Overall

6888

Males

6121

M50-54

6121

20K→Half

12.4 - 13.1 mi

Top 24%
×2story building
+19ft-37ft

Overall

6769

Males

6034

M50-54

6034

Half→25K

13.1 - 15.5 mi

Top 22%
×4story building
+66ft-88ft

Overall

6213

Males

5553

M50-54

5553

25K→30K

15.5 - 18.6 mi

Top 19%
×9story building
+181ft-148ft

Overall

5420

Males

4871

M50-54

4871

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5675

Males

4955

M50-54

4955

20M→21M

20.0 - 21.0 mi

Top 20%
×8story building
+106ft-24ft

Overall

5622

Males

4815

M50-54

4815

21M→35K

21.0 - 21.8 mi

Top 16%
×7story building
+17ft-86ft

Overall

4613

Males

4091

M50-54

4091

35K→23M

21.8 - 23.0 mi

Top 23%
×5story building
+23ft-63ft

Overall

6414

Males

5227

M50-54

5227

23M→24M

23.0 - 24.0 mi

Top 24%
×6story building
+12ft-82ft

Overall

6686

Males

5333

M50-54

5333

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

10086

Males

7077

M50-54

7077

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

12152

Males

8036

M50-54

8036

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2story building
+22ft-21ft

Overall

7092

Males

5379

M50-54

5379

Passing Analysis

Category:
Athletes Passed
2771
Passed By
473
Net Change
+2298
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8647
5K → 10K71333+680#8647#7967
10K → 15K29536+259#7967#7708
15K → 20K26636+230#7708#7478
20K → Half515+46#7478#7432
Half → 25K25311+242#7432#7190
25K → 30K46313+450#7190#6740
30K → 20M18916+173#6740#6567
20M → 21M13618+118#6567#6449
21M → 35K1014+97#6449#6352
35K → 23M10750+57#6352#6295
23M → 24M7531+44#6295#6251
24M → 40K34112-78#6251#6329
40K → 25.2M1365-52#6329#6381
25.2M → Finish7543+32#6381#6349
TOTALS2771473+2298
📊

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