Boston Marathon logo
BOSTON MARATHON 2025

Mark Leahy

Bib: 16585•M

MD

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
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
7:55/mi
24:36
↑ 97↓ 3451.5%
10K· 6.21 mi
7:59/mi
49:25
↑ 79↓ 1380.4%
15K· 9.32 mi
8:09/mi
1:14:45
↑ 67↓ 78
20K· 12.43 mi
8:29/mi
1:41:05
↑ 106↓ 860.1%
Half· 13.11 mi
8:12/mi
1:46:41
↑ 19↓ 370.5%
25K· 15.53 mi
8:34/mi
2:07:27
↑ 66↓ 880.2%
30K· 18.64 mi
9:16/mi
2:36:13
↑ 181↓ 1480.2%
20M
9:13/mi
2:48:45
↑ 64↓ 500.2%
21M
9:49/mi
2:58:34
↑ 106↓ 241.6%
35K· 21.75 mi
8:40/mi
3:05:03
↑ 17↓ 861.7%
23M
9:13/mi
3:16:35
↑ 23↓ 630.6%
24M
9:15/mi
3:25:50
↓ 821.3%
40K· 24.85 mi
9:19/mi
3:33:48
↓ 200.3%
25.2M
9:38/mi
3:37:07
↑ 13↓ 160.2%
Finish· 26.22 mi
9:38/mi
3:46:57
↑ 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
Time1:46:41
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time2:00:16
Pace9:10 /mi
📊Positive Split: 12.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:5224:367:5524:36
7:55
-
10K
6.21 mi11:22:4149:257:5724:49
7:59
+0:04
15K
9.32 mi11:48:011:14:458:0125:20
8:09
+0:10
20K
12.43 mi12:14:211:41:058:0826:20
8:29
+0:20
Half
13.11 mi12:19:571:46:418:085:36
8:12
-0:17
25K
15.53 mi12:40:432:07:278:1220:46
8:34
+0:22
30K
18.64 mi13:09:292:36:138:2328:46
9:16
+0:42
20M
20.00 mi13:22:012:48:458:2612:32
9:13
-0:03
21M
21.00 mi13:31:502:58:348:309:49
9:49
+0:36
35K
21.75 mi13:38:193:05:038:316:29
8:40
-1:09
23M
23.00 mi13:49:513:16:358:3311:32
9:13
+0:33
24M
24.00 mi13:59:063:25:508:359:15
9:15
+0:02
40K
24.85 mi14:07:043:33:488:367:58
9:19
+0:04
25.2M
25.20 mi14:10:233:37:078:373:19
9:38
+0:19
Finish
26.22 mi14:20:133:46:578:409:50
9:38
0:00

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

7:55 /mi

Average Pace

8:40 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:56

59% of race

Time at Steady Pace

1:10:03

31% of race

Time at Slower Pace

22:58

10% of race

Average Pace: 8:39 /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 mi10:57:5224:367:5524:36
7:55
#15867
10K
6.21 mi11:22:4149:257:5724:49
7:59
#16120
15K
9.32 mi11:48:011:14:458:0125:20
8:09
#16483
20K
12.43 mi12:14:211:41:058:0826:20
8:29
#16928
Half
13.11 mi12:19:571:46:418:085:36
8:12
#16940
25K
15.53 mi12:40:432:07:278:1220:46
8:34
#16983
30K
18.64 mi13:09:292:36:138:2328:46
9:16
#17336
20M
20.00 mi13:22:012:48:458:2612:32
9:13
#17372
21M
21.00 mi13:31:502:58:348:309:49
9:49
#17379
35K
21.75 mi13:38:193:05:038:316:29
8:40
#17323
23M
23.00 mi13:49:513:16:358:3311:32
9:13
#17322
24M
24.00 mi13:59:063:25:508:359:15
9:15
#17385
40K
24.85 mi14:07:043:33:488:367:58
9:19
#17424
25.2M
25.20 mi14:10:233:37:078:373:19
9:38
#17394
Finish
26.22 mi14:20:133:46:578:409:50
9:38
#17582
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi15867107621076217099(Top 60%)11261(Top 70%)11261(Top 564%)
10K6.21 mi3.10 mi16120-25310859-9710859-9716376(Top 58%)10979(Top 68%)10979(Top 550%)
15K9.32 mi3.11 mi16483-36311012-15311012-15317099(Top 60%)11261(Top 70%)11261(Top 564%)
20K12.43 mi3.11 mi16928-44511180-16811180-16818049(Top 64%)11625(Top 72%)11625(Top 582%)
Half13.11 mi0.68 mi16940-1211185-511185-517289(Top 61%)11316(Top 70%)11316(Top 567%)
25K15.53 mi2.42 mi16983-4311182+311182+317568(Top 62%)11346(Top 70%)11346(Top 568%)
30K18.64 mi3.11 mi17336-35311267-8511267-8518927(Top 67%)11796(Top 73%)11796(Top 591%)
20M20.00 mi1.36 mi17372-3611257+1011257+1017870(Top 63%)11186(Top 69%)11186(Top 560%)
21M21.00 mi1.00 mi17379-711227+3011227+3017535(Top 62%)10939(Top 68%)10939(Top 548%)
35K21.75 mi0.75 mi17323+5611178+4911178+4916453(Top 58%)10376(Top 64%)10376(Top 520%)
23M23.00 mi1.25 mi17322+111150+2811150+2817375(Top 61%)10685(Top 66%)10685(Top 535%)
24M24.00 mi1.00 mi17385-6311153-311153-318565(Top 65%)11194(Top 70%)11194(Top 561%)
40K24.85 mi0.85 mi17424-3911143+1011143+1017913(Top 63%)10780(Top 67%)10780(Top 540%)
25.2M25.20 mi0.35 mi17394+3011122+2111122+2115318(Top 54%)9518(Top 59%)9518(Top 477%)
Finish26.22 mi1.02 mi17582-18811183-6111183-6121693(Top 76%)12622(Top 78%)12622(Top 632%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

17099

Males

11261

M50-54

11261

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

16376

Males

10979

M50-54

10979

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

17099

Males

11261

M50-54

11261

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

18049

Males

11625

M50-54

11625

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

17289

Males

11316

M50-54

11316

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

17568

Males

11346

M50-54

11346

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

18927

Males

11796

M50-54

11796

30K→20M

18.6 - 20.0 mi

Top 63%
×5story building
+64ft-50ft

Overall

17870

Males

11186

M50-54

11186

20M→21M

20.0 - 21.0 mi

Top 62%
×8story building
+106ft-24ft

Overall

17535

Males

10939

M50-54

10939

21M→35K

21.0 - 21.8 mi

Top 58%
×7story building
+17ft-86ft

Overall

16453

Males

10376

M50-54

10376

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

17375

Males

10685

M50-54

10685

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

18565

Males

11194

M50-54

11194

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

17913

Males

10780

M50-54

10780

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15318

Males

9518

M50-54

9518

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

21693

Males

12622

M50-54

12622

Passing Analysis

Category:
Athletes Passed
1305
Passed By
3020
Net Change
-1715
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15867
5K → 10K222475-253#15867#16120
10K → 15K104467-363#16120#16483
15K → 20K86531-445#16483#16928
20K → Half2739-12#16928#16940
Half → 25K143186-43#16940#16983
25K → 30K131484-353#16983#17336
30K → 20M97133-36#17336#17372
20M → 21M97104-7#17372#17379
21M → 35K9135+56#17379#17323
35K → 23M121120+1#17323#17322
23M → 24M66129-63#17322#17385
24M → 40K5392-39#17385#17424
40K → 25.2M4414+30#17424#17394
25.2M → Finish23211-188#17394#17582
TOTALS13053020-1715
📊

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