Boston Marathon logo
BOSTON MARATHON 2025

Jeffrey Mastro

Bib: 16543•M

AZ

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
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
8:52/mi
27:33
↑ 97↓ 3451.5%
10K· 6.21 mi
9:24/mi
56:45
↑ 79↓ 1380.4%
15K· 9.32 mi
9:37/mi
1:26:38
↑ 67↓ 78
20K· 12.43 mi
9:48/mi
1:57:04
↑ 106↓ 860.1%
Half· 13.11 mi
9:23/mi
2:03:28
↑ 19↓ 370.5%
25K· 15.53 mi
10:29/mi
2:28:52
↑ 66↓ 880.2%
30K· 18.64 mi
11:12/mi
3:03:41
↑ 181↓ 1480.2%
20M
11:12/mi
3:18:54
↑ 64↓ 500.2%
21M
11:32/mi
3:30:26
↑ 106↓ 241.6%
35K· 21.75 mi
11:18/mi
3:38:53
↑ 17↓ 861.7%
23M
11:05/mi
3:52:46
↑ 23↓ 630.6%
24M
11:36/mi
4:04:22
↓ 821.3%
40K· 24.85 mi
11:32/mi
4:14:14
↓ 200.3%
25.2M
11:27/mi
4:18:11
↑ 13↓ 160.2%
Finish· 26.22 mi
10:00/mi
4:28:22
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:03:28
Pace9:25 /mi
2nd Half
Distance13.11 mi
Time2:24:54
Pace11:03 /mi
📊Positive Split: 17.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:01:3127:338:5227:33
8:52
-
10K
6.21 mi11:30:4356:459:0829:12
9:24
+0:32
15K
9.32 mi12:00:361:26:389:1829:53
9:37
+0:13
20K
12.43 mi12:31:021:57:049:2530:26
9:48
+0:11
Half
13.11 mi12:37:262:03:289:256:24
9:23
-0:25
25K
15.53 mi13:02:502:28:529:3525:24
10:29
+1:06
30K
18.64 mi13:37:393:03:419:5134:49
11:12
+0:43
20M
20.00 mi13:52:523:18:549:5715:13
11:12
0:00
21M
21.00 mi14:04:243:30:2610:0111:32
11:32
+0:20
35K
21.75 mi14:12:513:38:5310:048:27
11:18
-0:14
23M
23.00 mi14:26:443:52:4610:0713:53
11:05
-0:13
24M
24.00 mi14:38:204:04:2210:1111:36
11:36
+0:31
40K
24.85 mi14:48:124:14:1410:149:52
11:32
-0:04
25.2M
25.20 mi14:52:094:18:1110:153:57
11:27
-0:05
Finish
26.22 mi15:02:204:28:2210:1510:11
10:00
-1:27

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

8:52 /mi

Average Pace

10:15 /mi

Slowest Pace

11:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:03

59% of race

Time at Steady Pace

1:37:43

36% of race

Time at Slower Pace

11:36

4% of race

Average Pace: 10:14 /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 mi11:01:3127:338:5227:33
8:52
#21838
10K
6.21 mi11:30:4356:459:0829:12
9:24
#22953
15K
9.32 mi12:00:361:26:389:1829:53
9:37
#23417
20K
12.43 mi12:31:021:57:049:2530:26
9:48
#23540
Half
13.11 mi12:37:262:03:289:256:24
9:23
#23514
25K
15.53 mi13:02:502:28:529:3525:24
10:29
#23647
30K
18.64 mi13:37:393:03:419:5134:49
11:12
#23830
20M
20.00 mi13:52:523:18:549:5715:13
11:12
#23863
21M
21.00 mi14:04:243:30:2610:0111:32
11:32
#23788
35K
21.75 mi14:12:513:38:5310:048:27
11:18
#23813
23M
23.00 mi14:26:443:52:4610:0713:53
11:05
#23805
24M
24.00 mi14:38:204:04:2210:1111:36
11:36
#23863
40K
24.85 mi14:48:124:14:1410:149:52
11:32
#23891
25.2M
25.20 mi14:52:094:18:1110:153:57
11:27
#23867
Finish
26.22 mi15:02:204:28:2210:1510:11
10:00
#23852
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi21838132421324224069(Top 85%)14296(Top 89%)14296(Top 867%)
10K6.21 mi3.10 mi22953-111513765-52313765-52323821(Top 84%)14180(Top 88%)14180(Top 860%)
15K9.32 mi3.11 mi23417-46413994-22913994-22924069(Top 85%)14296(Top 89%)14296(Top 867%)
20K12.43 mi3.11 mi23540-12314050-5614050-5623752(Top 84%)14116(Top 88%)14116(Top 857%)
Half13.11 mi0.68 mi23514+2614043+714043+723190(Top 82%)13881(Top 86%)13881(Top 842%)
25K15.53 mi2.42 mi23647-13314081-3814081-3824329(Top 86%)14340(Top 89%)14340(Top 870%)
30K18.64 mi3.11 mi23830-18314126-4514126-4524385(Top 86%)14253(Top 89%)14253(Top 865%)
20M20.00 mi1.36 mi23863-3314127-114127-123992(Top 84%)13980(Top 87%)13980(Top 848%)
21M21.00 mi1.00 mi23788+7514075+5214075+5222672(Top 80%)13283(Top 82%)13283(Top 806%)
35K21.75 mi0.75 mi23813-2514076-114076-124760(Top 87%)14237(Top 88%)14237(Top 864%)
23M23.00 mi1.25 mi23805+814050+2614050+2623430(Top 82%)13555(Top 84%)13555(Top 823%)
24M24.00 mi1.00 mi23863-5814064-1414064-1425068(Top 88%)14339(Top 89%)14339(Top 870%)
40K24.85 mi0.85 mi23891-2814069-514069-524205(Top 85%)13876(Top 86%)13876(Top 842%)
25.2M25.20 mi0.35 mi23867+2414048+2114048+2121929(Top 77%)12760(Top 79%)12760(Top 774%)
Finish26.22 mi1.02 mi23852+1514031+1714031+1722920(Top 81%)13236(Top 82%)13236(Top 803%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21story building
+97ft-345ft

Overall

24069

Males

14296

M55-59

14296

5K→10K

3.1 - 6.2 mi

Top 84%
×5story building
+79ft-138ft

Overall

23821

Males

14180

M55-59

14180

10K→15K

6.2 - 9.3 mi

Top 85%
×3story building
+67ft-78ft

Overall

24069

Males

14296

M55-59

14296

15K→20K

9.3 - 12.4 mi

Top 84%
×5story building
+106ft-86ft

Overall

23752

Males

14116

M55-59

14116

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

23190

Males

13881

M55-59

13881

Half→25K

13.1 - 15.5 mi

Top 86%
×4story building
+66ft-88ft

Overall

24329

Males

14340

M55-59

14340

25K→30K

15.5 - 18.6 mi

Top 86%
×9story building
+181ft-148ft

Overall

24385

Males

14253

M55-59

14253

30K→20M

18.6 - 20.0 mi

Top 84%
×5story building
+64ft-50ft

Overall

23992

Males

13980

M55-59

13980

20M→21M

20.0 - 21.0 mi

Top 80%
×8story building
+106ft-24ft

Overall

22672

Males

13283

M55-59

13283

21M→35K

21.0 - 21.8 mi

Top 87%
×7story building
+17ft-86ft

Overall

24760

Males

14237

M55-59

14237

35K→23M

21.8 - 23.0 mi

Top 82%
×5story building
+23ft-63ft

Overall

23430

Males

13555

M55-59

13555

23M→24M

23.0 - 24.0 mi

Top 88%
×6story building
+12ft-82ft

Overall

25068

Males

14339

M55-59

14339

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

24205

Males

13876

M55-59

13876

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

21929

Males

12760

M55-59

12760

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2story building
+22ft-21ft

Overall

22920

Males

13236

M55-59

13236

Passing Analysis

Category:
Athletes Passed
837
Passed By
2851
Net Change
-2014
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21838
5K → 10K341149-1115#21838#22953
10K → 15K60524-464#22953#23417
15K → 20K108231-123#23417#23540
20K → Half359+26#23540#23514
Half → 25K88221-133#23514#23647
25K → 30K96279-183#23647#23830
30K → 20M6194-33#23830#23863
20M → 21M11439+75#23863#23788
21M → 35K3055-25#23788#23813
35K → 23M7163+8#23813#23805
23M → 24M2381-58#23805#23863
24M → 40K3361-28#23863#23891
40K → 25.2M3410+24#23891#23867
25.2M → Finish5035+15#23867#23852
TOTALS8372851-2014
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing