Boston Marathon logo
BOSTON MARATHON 2025

Daniel Heaf

Bib: 30932•M

OR

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
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
8:30/mi
26:24
↑ 97↓ 3451.5%
10K· 6.21 mi
8:16/mi
52:06
↑ 79↓ 1380.4%
15K· 9.32 mi
8:33/mi
1:18:39
↑ 67↓ 78
20K· 12.43 mi
8:48/mi
1:46:00
↑ 106↓ 860.1%
Half· 13.11 mi
8:42/mi
1:51:56
↑ 19↓ 370.5%
25K· 15.53 mi
8:59/mi
2:13:43
↑ 66↓ 880.2%
30K· 18.64 mi
9:33/mi
2:43:24
↑ 181↓ 1480.2%
20M
9:38/mi
2:56:30
↑ 64↓ 500.2%
21M
10:57/mi
3:07:27
↑ 106↓ 241.6%
35K· 21.75 mi
9:07/mi
3:14:16
↑ 17↓ 861.7%
23M
9:29/mi
3:26:08
↑ 23↓ 630.6%
24M
9:08/mi
3:35:16
↓ 821.3%
40K· 24.85 mi
9:53/mi
3:43:43
↓ 200.3%
25.2M
10:44/mi
3:47:25
↑ 13↓ 160.2%
Finish· 26.22 mi
9:28/mi
3:57:04
↑ 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
Time1:51:56
Pace8:32 /mi
2nd Half
Distance13.11 mi
Time2:05:08
Pace9:33 /mi
📊Positive Split: 11.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:2526:248:3026:24
8:30
-
10K
6.21 mi12:11:0752:068:2325:42
8:16
-0:14
15K
9.32 mi12:37:401:18:398:2626:33
8:33
+0:17
20K
12.43 mi13:05:011:46:008:3227:21
8:48
+0:15
Half
13.11 mi13:10:571:51:568:325:56
8:42
-0:06
25K
15.53 mi13:32:442:13:438:3621:47
8:59
+0:17
30K
18.64 mi14:02:252:43:248:4629:41
9:33
+0:34
20M
20.00 mi14:15:312:56:308:4913:06
9:38
+0:05
21M
21.00 mi14:26:283:07:278:5610:57
10:57
+1:19
35K
21.75 mi14:33:173:14:168:566:49
9:07
-1:50
23M
23.00 mi14:45:093:26:088:5811:52
9:29
+0:22
24M
24.00 mi14:54:173:35:168:589:08
9:08
-0:21
40K
24.85 mi15:02:443:43:439:008:27
9:53
+0:45
25.2M
25.20 mi15:06:263:47:259:013:42
10:44
+0:51
Finish
26.22 mi15:16:053:57:049:039:39
9:28
-1:16

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

8:16 /mi

Average Pace

9:03 /mi

Slowest Pace

10:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:24:35

36% of race

Time at Steady Pace

1:26:36

37% of race

Time at Slower Pace

1:05:53

28% of race

Average Pace: 9:02 /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 mi11:45:2526:248:3026:24
8:30
#19859
10K
6.21 mi12:11:0752:068:2325:42
8:16
#19145
15K
9.32 mi12:37:401:18:398:2626:33
8:33
#19276
20K
12.43 mi13:05:011:46:008:3227:21
8:48
#19457
Half
13.11 mi13:10:571:51:568:325:56
8:42
#19507
25K
15.53 mi13:32:442:13:438:3621:47
8:59
#19558
30K
18.64 mi14:02:252:43:248:4629:41
9:33
#19683
20M
20.00 mi14:15:312:56:308:4913:06
9:38
#19688
21M
21.00 mi14:26:283:07:278:5610:57
10:57
#19834
35K
21.75 mi14:33:173:14:168:566:49
9:07
#19787
23M
23.00 mi14:45:093:26:088:5811:52
9:29
#19709
24M
24.00 mi14:54:173:35:168:589:08
9:08
#19641
40K
24.85 mi15:02:443:43:439:008:27
9:53
#19694
25.2M
25.20 mi15:06:263:47:259:013:42
10:44
#19692
Finish
26.22 mi15:16:053:57:049:039:39
9:28
#19755
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi19859123761237619601(Top 69%)12324(Top 77%)12324(Top 517%)
10K6.21 mi3.10 mi19145+71412106+27012106+27018367(Top 65%)11793(Top 73%)11793(Top 494%)
15K9.32 mi3.11 mi19276-13112174-6812174-6819601(Top 69%)12324(Top 77%)12324(Top 517%)
20K12.43 mi3.11 mi19457-18112242-6812242-6819942(Top 70%)12439(Top 77%)12439(Top 521%)
Half13.11 mi0.68 mi19507-5012254-1212254-1220297(Top 71%)12589(Top 78%)12589(Top 528%)
25K15.53 mi2.42 mi19558-5112275-2112275-2119812(Top 70%)12333(Top 77%)12333(Top 517%)
30K18.64 mi3.11 mi19683-12512287-1212287-1220147(Top 71%)12360(Top 77%)12360(Top 518%)
20M20.00 mi1.36 mi19688-512266+2112266+2119736(Top 69%)12035(Top 75%)12035(Top 504%)
21M21.00 mi1.00 mi19834-14612301-3512301-3521240(Top 75%)12605(Top 78%)12605(Top 528%)
35K21.75 mi0.75 mi19787+4712263+3812263+3818755(Top 66%)11381(Top 71%)11381(Top 477%)
23M23.00 mi1.25 mi19709+7812199+6412199+6418577(Top 65%)11257(Top 70%)11257(Top 472%)
24M24.00 mi1.00 mi19641+6812139+6012139+6018030(Top 63%)10941(Top 68%)10941(Top 459%)
40K24.85 mi0.85 mi19694-5312149-1012149-1020061(Top 71%)11818(Top 73%)11818(Top 495%)
25.2M25.20 mi0.35 mi19692+212136+1312136+1319795(Top 70%)11693(Top 73%)11693(Top 490%)
Finish26.22 mi1.02 mi19755-6312156-2012156-2021057(Top 74%)12318(Top 76%)12318(Top 516%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

19601

Males

12324

M45-49

12324

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

18367

Males

11793

M45-49

11793

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

19601

Males

12324

M45-49

12324

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

19942

Males

12439

M45-49

12439

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

20297

Males

12589

M45-49

12589

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

19812

Males

12333

M45-49

12333

25K→30K

15.5 - 18.6 mi

Top 71%
×9story building
+181ft-148ft

Overall

20147

Males

12360

M45-49

12360

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

19736

Males

12035

M45-49

12035

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

21240

Males

12605

M45-49

12605

21M→35K

21.0 - 21.8 mi

Top 66%
×7story building
+17ft-86ft

Overall

18755

Males

11381

M45-49

11381

35K→23M

21.8 - 23.0 mi

Top 65%
×5story building
+23ft-63ft

Overall

18577

Males

11257

M45-49

11257

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

18030

Males

10941

M45-49

10941

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

20061

Males

11818

M45-49

11818

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

19795

Males

11693

M45-49

11693

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2story building
+22ft-21ft

Overall

21057

Males

12318

M45-49

12318

Passing Analysis

Category:
Athletes Passed
2012
Passed By
1908
Net Change
+104
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19859
5K → 10K78369+714#19859#19145
10K → 15K164295-131#19145#19276
15K → 20K143324-181#19276#19457
20K → Half2272-50#19457#19507
Half → 25K148199-51#19507#19558
25K → 30K183308-125#19558#19683
30K → 20M98103-5#19683#19688
20M → 21M56202-146#19688#19834
21M → 35K7225+47#19834#19787
35K → 23M13355+78#19787#19709
23M → 24M9729+68#19709#19641
24M → 40K51104-53#19641#19694
40K → 25.2M2725+2#19694#19692
25.2M → Finish3598-63#19692#19755
TOTALS20121908+104
📊

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