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BOSTON MARATHON 2025

Brian Mason

Bib: 12180•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 28%
Gender (Male)
#0 / 16105
Top 41%
Masters (Masters Men)
#0 / 10463
Top 28%
Division (M50-54)
#0 / 1996
Top 25%
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
7:08/mi
22:11
↑ 97↓ 3451.5%
10K· 6.21 mi
7:10/mi
44:28
↑ 79↓ 1380.4%
15K· 9.32 mi
7:09/mi
1:06:41
↑ 67↓ 78
20K· 12.43 mi
7:16/mi
1:29:15
↑ 106↓ 860.1%
Half· 13.11 mi
7:09/mi
1:34:08
↑ 19↓ 370.5%
25K· 15.53 mi
7:18/mi
1:51:49
↑ 66↓ 880.2%
30K· 18.64 mi
7:27/mi
2:14:59
↑ 181↓ 1480.2%
20M
7:35/mi
2:25:17
↑ 64↓ 500.2%
21M
8:08/mi
2:33:25
↑ 106↓ 241.6%
35K· 21.75 mi
7:18/mi
2:38:53
↑ 17↓ 861.7%
23M
7:35/mi
2:48:23
↑ 23↓ 630.6%
24M
7:27/mi
2:55:50
↓ 821.3%
40K· 24.85 mi
7:42/mi
3:02:25
↓ 200.3%
25.2M
8:30/mi
3:05:21
↑ 13↓ 160.2%
Finish· 26.22 mi
7:28/mi
3:12:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:08
Pace7:11 /mi
2nd Half
Distance13.11 mi
Time1:38:50
Pace7:32 /mi
📊Positive Split: 5.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:0922:117:0822:11
7:08
-
10K
6.21 mi11:12:2644:287:0922:17
7:10
+0:02
15K
9.32 mi11:34:391:06:417:0922:13
7:09
-0:01
20K
12.43 mi11:57:131:29:157:1122:34
7:16
+0:07
Half
13.11 mi12:02:061:34:087:114:53
7:09
-0:07
25K
15.53 mi12:19:471:51:497:1217:41
7:18
+0:09
30K
18.64 mi12:42:572:14:597:1423:10
7:27
+0:09
20M
20.00 mi12:53:152:25:177:1610:18
7:35
+0:08
21M
21.00 mi13:01:232:33:257:188:08
8:08
+0:33
35K
21.75 mi13:06:512:38:537:185:28
7:18
-0:50
23M
23.00 mi13:16:212:48:237:199:30
7:35
+0:17
24M
24.00 mi13:23:482:55:507:207:27
7:27
-0:08
40K
24.85 mi13:30:233:02:257:206:35
7:42
+0:15
25.2M
25.20 mi13:33:193:05:217:212:56
8:30
+0:48
Finish
26.22 mi13:40:563:12:587:227:37
7:28
-1:02

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

7:08 /mi

Average Pace

7:22 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:01:54

94% of race

Time at Steady Pace

8:08

4% of race

Time at Slower Pace

2:56

2% of race

Average Pace: 7:22 /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 mi10:50:0922:117:0822:11
7:08
#8955
10K
6.21 mi11:12:2644:287:0922:17
7:10
#9083
15K
9.32 mi11:34:391:06:417:0922:13
7:09
#8939
20K
12.43 mi11:57:131:29:157:1122:34
7:16
#8805
Half
13.11 mi12:02:061:34:087:114:53
7:09
#8796
25K
15.53 mi12:19:471:51:497:1217:41
7:18
#8655
30K
18.64 mi12:42:572:14:597:1423:10
7:27
#8351
20M
20.00 mi12:53:152:25:177:1610:18
7:35
#8250
21M
21.00 mi13:01:232:33:257:188:08
8:08
#8181
35K
21.75 mi13:06:512:38:537:185:28
7:18
#8094
23M
23.00 mi13:16:212:48:237:199:30
7:35
#7980
24M
24.00 mi13:23:482:55:507:207:27
7:27
#7928
40K
24.85 mi13:30:233:02:257:206:35
7:42
#7889
25.2M
25.20 mi13:33:193:05:217:212:56
8:30
#7875
Finish
26.22 mi13:40:563:12:587:227:37
7:28
#7894
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi8955758175818700(Top 31%)7371(Top 46%)7371(Top 369%)
10K6.21 mi3.10 mi9083-1287650-697650-699245(Top 33%)7739(Top 48%)7739(Top 388%)
15K9.32 mi3.11 mi8939+1447550+1007550+1008700(Top 31%)7371(Top 46%)7371(Top 369%)
20K12.43 mi3.11 mi8805+1347447+1037447+1038719(Top 31%)7285(Top 45%)7285(Top 365%)
Half13.11 mi0.68 mi8796+97433+147433+148672(Top 31%)7284(Top 45%)7284(Top 365%)
25K15.53 mi2.42 mi8655+1417332+1017332+1018300(Top 29%)6935(Top 43%)6935(Top 347%)
30K18.64 mi3.11 mi8351+3047093+2397093+2397430(Top 26%)6235(Top 39%)6235(Top 312%)
20M20.00 mi1.36 mi8250+1016999+946999+947527(Top 26%)6156(Top 38%)6156(Top 308%)
21M21.00 mi1.00 mi8181+696920+796920+798141(Top 29%)6334(Top 39%)6334(Top 317%)
35K21.75 mi0.75 mi8094+876842+786842+787268(Top 26%)5852(Top 36%)5852(Top 293%)
23M23.00 mi1.25 mi7980+1146727+1156727+1157160(Top 25%)5675(Top 35%)5675(Top 284%)
24M24.00 mi1.00 mi7928+526657+706657+707339(Top 26%)5726(Top 36%)5726(Top 287%)
40K24.85 mi0.85 mi7889+396604+536604+538061(Top 28%)6023(Top 37%)6023(Top 302%)
25.2M25.20 mi0.35 mi7875+146581+236581+238761(Top 31%)6320(Top 39%)6320(Top 317%)
Finish26.22 mi1.02 mi7894-196562+196562+198983(Top 32%)6423(Top 40%)6423(Top 322%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21story building
+97ft-345ft

Overall

8700

Males

7371

M50-54

7371

5K→10K

3.1 - 6.2 mi

Top 33%
×5story building
+79ft-138ft

Overall

9245

Males

7739

M50-54

7739

10K→15K

6.2 - 9.3 mi

Top 31%
×3story building
+67ft-78ft

Overall

8700

Males

7371

M50-54

7371

15K→20K

9.3 - 12.4 mi

Top 31%
×5story building
+106ft-86ft

Overall

8719

Males

7285

M50-54

7285

20K→Half

12.4 - 13.1 mi

Top 31%
×2story building
+19ft-37ft

Overall

8672

Males

7284

M50-54

7284

Half→25K

13.1 - 15.5 mi

Top 29%
×4story building
+66ft-88ft

Overall

8300

Males

6935

M50-54

6935

25K→30K

15.5 - 18.6 mi

Top 26%
×9story building
+181ft-148ft

Overall

7430

Males

6235

M50-54

6235

30K→20M

18.6 - 20.0 mi

Top 26%
×5story building
+64ft-50ft

Overall

7527

Males

6156

M50-54

6156

20M→21M

20.0 - 21.0 mi

Top 29%
×8story building
+106ft-24ft

Overall

8141

Males

6334

M50-54

6334

21M→35K

21.0 - 21.8 mi

Top 26%
×7story building
+17ft-86ft

Overall

7268

Males

5852

M50-54

5852

35K→23M

21.8 - 23.0 mi

Top 25%
×5story building
+23ft-63ft

Overall

7160

Males

5675

M50-54

5675

23M→24M

23.0 - 24.0 mi

Top 26%
×6story building
+12ft-82ft

Overall

7339

Males

5726

M50-54

5726

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

8061

Males

6023

M50-54

6023

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8761

Males

6320

M50-54

6320

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2story building
+22ft-21ft

Overall

8983

Males

6423

M50-54

6423

Passing Analysis

Category:
Athletes Passed
2073
Passed By
1012
Net Change
+1061
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8955
5K → 10K166294-128#8955#9083
10K → 15K23894+144#9083#8939
15K → 20K22894+134#8939#8805
20K → Half3324+9#8805#8796
Half → 25K21170+141#8796#8655
25K → 30K37571+304#8655#8351
30K → 20M14241+101#8351#8250
20M → 21M12253+69#8250#8181
21M → 35K10417+87#8181#8094
35K → 23M16450+114#8094#7980
23M → 24M9240+52#7980#7928
24M → 40K8748+39#7928#7889
40K → 25.2M4127+14#7889#7875
25.2M → Finish7089-19#7875#7894
TOTALS20731012+1061
📊

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