Boston Marathon logo
BOSTON MARATHON 2025

William Haffey

Bib: 25534•M

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M75-79)
#0 / 52
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:56
Rank: #24642
Start → 5K
9:38/mi
29:56 split
10K· 6.21 mi
1:00:04
Rank: #24655 (-13)
5K → 10K
9:42/mi
30:08 split
15K· 9.32 mi
1:31:47
Rank: #24922 (-267)
10K → 15K
10:13/mi
31:43 split
20K· 12.43 mi
2:03:13
Rank: #24795 (+127)
15K → 20K
10:07/mi
31:26 split
Half· 13.11 mi
2:09:59
Rank: #24789 (+6)
20K → Half
9:55/mi
6:46 split
25K· 15.53 mi
2:38:48
Rank: #25170 (-381)
Half → 25K
11:53/mi
28:49 split
30K· 18.64 mi
3:17:35
Rank: #25408 (-238)
25K → 30K
12:29/mi
38:47 split
20M
3:38:09
Rank: #25754 (-346)
30K → 20M
15:08/mi
20:34 split
21M
3:51:09
Rank: #25740 (+14)
20M → 21M
13:00/mi
13:00 split
35K· 21.75 mi
4:00:32
Rank: #25784 (-44)
21M → 35K
12:33/mi
9:23 split
23M
4:16:10
Rank: #25809 (-25)
35K → 23M
12:29/mi
15:38 split
24M
4:27:20
Rank: #25760 (+49)
23M → 24M
11:10/mi
11:10 split
40K· 24.85 mi
4:38:30
Rank: #25801 (-41)
24M → 40K
13:04/mi
11:10 split
25.2M
4:45:11
Rank: #25931 (-130)
40K → 25.2M
19:23/mi
6:41 split
Finish· 26.22 mi
4:58:34
Rank: #26062 (-131)
25.2M → Finish
13:08/mi
13:23 split

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
Time2:09:59
Pace9:55 /mi
2nd Half
Distance13.11 mi
Time2:48:35
Pace12:52 /mi
📊Positive Split: 29.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:0429:569:3829:56
9:38
-
10K
6.21 mi12:15:121:00:049:4030:08
9:42
+0:04
15K
9.32 mi12:46:551:31:479:5131:43
10:13
+0:31
20K
12.43 mi13:18:212:03:139:5531:26
10:07
-0:06
Half
13.11 mi13:25:072:09:599:556:46
9:55
-0:12
25K
15.53 mi13:53:562:38:4810:1328:49
11:53
+1:58
30K
18.64 mi14:32:433:17:3510:3638:47
12:29
+0:36
20M
20.00 mi14:53:173:38:0910:5420:34
15:08
+2:39
21M
21.00 mi15:06:173:51:0911:0013:00
13:00
-2:08
35K
21.75 mi15:15:404:00:3211:049:23
12:33
-0:27
23M
23.00 mi15:31:184:16:1011:0815:38
12:29
-0:04
24M
24.00 mi15:42:284:27:2011:0811:10
11:10
-1:19
40K
24.85 mi15:53:384:38:3011:1211:10
13:04
+1:54
25.2M
25.20 mi16:00:194:45:1111:196:41
19:23
+6:19
Finish
26.22 mi16:13:424:58:3411:2413:23
13:08
-6:15

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

9:38 /mi

Average Pace

11:24 /mi

Slowest Pace

19:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:21:09

47% of race

Time at Steady Pace

2:10:10

44% of race

Time at Slower Pace

27:15

9% of race

Average Pace: 11:23 /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 mi11:45:0429:569:3829:56
9:38
#24642
10K
6.21 mi12:15:121:00:049:4030:08
9:42
#24655
15K
9.32 mi12:46:551:31:479:5131:43
10:13
#24922
20K
12.43 mi13:18:212:03:139:5531:26
10:07
#24795
Half
13.11 mi13:25:072:09:599:556:46
9:55
#24789
25K
15.53 mi13:53:562:38:4810:1328:49
11:53
#25170
30K
18.64 mi14:32:433:17:3510:3638:47
12:29
#25408
20M
20.00 mi14:53:173:38:0910:5420:34
15:08
#25754
21M
21.00 mi15:06:173:51:0911:0013:00
13:00
#25740
35K
21.75 mi15:15:404:00:3211:049:23
12:33
#25784
23M
23.00 mi15:31:184:16:1011:0815:38
12:29
#25809
24M
24.00 mi15:42:284:27:2011:0811:10
11:10
#25760
40K
24.85 mi15:53:384:38:3011:1211:10
13:04
#25801
25.2M
25.20 mi16:00:194:45:1111:196:41
19:23
#25931
Finish
26.22 mi16:13:424:58:3411:2413:23
13:08
#26062
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM75-79Seg. OverallSeg. MalesSeg. M75-79
5K3.11 mi3.11 mi24642145471454725434(Top 90%)14899(Top 93%)14899(Top 28652%)
10K6.21 mi3.10 mi24655-1314556-914556-924610(Top 87%)14523(Top 90%)14523(Top 27929%)
15K9.32 mi3.11 mi24922-26714677-12114677-12125434(Top 90%)14899(Top 93%)14899(Top 28652%)
20K12.43 mi3.11 mi24795+12714612+6514612+6524466(Top 86%)14437(Top 90%)14437(Top 27763%)
Half13.11 mi0.68 mi24789+614610+214610+224663(Top 87%)14515(Top 90%)14515(Top 27913%)
25K15.53 mi2.42 mi25170-38114756-14614756-14626312(Top 93%)15209(Top 94%)15209(Top 29248%)
30K18.64 mi3.11 mi25408-23814837-8114837-8126159(Top 92%)15060(Top 94%)15060(Top 28962%)
20M20.00 mi1.36 mi25754-34614982-14514982-14527929(Top 98%)15838(Top 98%)15838(Top 30458%)
21M21.00 mi1.00 mi25740+1414962+2014962+2025041(Top 88%)14389(Top 89%)14389(Top 27671%)
35K21.75 mi0.75 mi25784-4414976-1414976-1426512(Top 93%)15101(Top 94%)15101(Top 29040%)
23M23.00 mi1.25 mi25809-25149761497625793(Top 91%)14734(Top 91%)14734(Top 28335%)
24M24.00 mi1.00 mi25760+4914937+3914937+3924330(Top 86%)13988(Top 87%)13988(Top 26900%)
40K24.85 mi0.85 mi25801-4114950-1314950-1326353(Top 93%)14968(Top 93%)14968(Top 28785%)
25.2M25.20 mi0.35 mi25931-13015018-6815018-6828332(Top 100%)16054(Top 100%)16054(Top 30873%)
Finish26.22 mi1.02 mi26062-13115076-5815076-5827690(Top 97%)15667(Top 97%)15667(Top 30129%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21stories
+97ft-345ft

Overall

25434

Males

14899

M75-79

14899

5K→10K

3.1 - 6.2 mi

Top 87%
×5stories
+79ft-138ft

Overall

24610

Males

14523

M75-79

14523

10K→15K

6.2 - 9.3 mi

Top 90%
×3stories
+67ft-78ft

Overall

25434

Males

14899

M75-79

14899

15K→20K

9.3 - 12.4 mi

Top 86%
×5stories
+106ft-86ft

Overall

24466

Males

14437

M75-79

14437

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

24663

Males

14515

M75-79

14515

Half→25K

13.1 - 15.5 mi

Top 93%
×4stories
+66ft-88ft

Overall

26312

Males

15209

M75-79

15209

25K→30K

15.5 - 18.6 mi

Top 92%
×9stories
+181ft-148ft

Overall

26159

Males

15060

M75-79

15060

30K→20M

18.6 - 20.0 mi

Top 98%
×5stories
+64ft-50ft

Overall

27929

Males

15838

M75-79

15838

20M→21M

20.0 - 21.0 mi

Top 88%
×8stories
+106ft-24ft

Overall

25041

Males

14389

M75-79

14389

21M→35K

21.0 - 21.8 mi

Top 93%
×7stories
+17ft-86ft

Overall

26512

Males

15101

M75-79

15101

35K→23M

21.8 - 23.0 mi

Top 91%
×5stories
+23ft-63ft

Overall

25793

Males

14734

M75-79

14734

23M→24M

23.0 - 24.0 mi

Top 86%
×6stories
+12ft-82ft

Overall

24330

Males

13988

M75-79

13988

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

26353

Males

14968

M75-79

14968

40K→25.2M

24.9 - 25.2 mi

Top 100%
×1story
+13ft-16ft

Overall

28332

Males

16054

M75-79

16054

25.2M→Finish

25.2 - 26.2 mi

Top 97%
×2stories
+22ft-21ft

Overall

27690

Males

15667

M75-79

15667

Passing Analysis

Category:
Athletes Passed
751
Passed By
2171
Net Change
-1420
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24642
5K → 10K196209-13#24642#24655
10K → 15K61328-267#24655#24922
15K → 20K20679+127#24922#24795
20K → Half2418+6#24795#24789
Half → 25K23404-381#24789#25170
25K → 30K48286-238#25170#25408
30K → 20M8354-346#25408#25754
20M → 21M5036+14#25754#25740
21M → 35K2064-44#25740#25784
35K → 23M3358-25#25784#25809
23M → 24M6112+49#25809#25760
24M → 40K1960-41#25760#25801
40K → 25.2M0130-130#25801#25931
25.2M → Finish2133-131#25931#26062
TOTALS7512171-1420
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing