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BOSTON MARATHON 2025

Mark Gaffney

Bib: 31297•M

MA

0:00
0:00
/ mi
Masters
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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
9:05/mi
28:14
↑ 97↓ 3451.5%
10K· 6.21 mi
8:51/mi
55:44
↑ 79↓ 1380.4%
15K· 9.32 mi
8:58/mi
1:23:36
↑ 67↓ 78
20K· 12.43 mi
8:48/mi
1:50:56
↑ 106↓ 860.1%
Half· 13.11 mi
8:48/mi
1:56:56
↑ 19↓ 370.5%
25K· 15.53 mi
8:50/mi
2:18:20
↑ 66↓ 880.2%
30K· 18.64 mi
9:01/mi
2:46:21
↑ 181↓ 1480.2%
20M
8:46/mi
2:58:16
↑ 64↓ 500.2%
21M
9:07/mi
3:07:23
↑ 106↓ 241.6%
35K· 21.75 mi
8:23/mi
3:13:39
↑ 17↓ 861.7%
23M
8:29/mi
3:24:16
↑ 23↓ 630.6%
24M
8:16/mi
3:32:32
↓ 821.3%
40K· 24.85 mi
8:28/mi
3:39:46
↓ 200.3%
25.2M
9:02/mi
3:42:53
↑ 13↓ 160.2%
Finish· 26.22 mi
8:10/mi
3:51:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:56:56
Pace8:55 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:54:16
Pace8:43 /mi
📊Negative Split: 2.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:5628:149:0528:14
9:05
-
10K
6.21 mi12:17:2655:448:5827:30
8:51
-0:14
15K
9.32 mi12:45:181:23:368:5827:52
8:58
+0:07
20K
12.43 mi13:12:381:50:568:5627:20
8:48
-0:10
Half
13.11 mi13:18:381:56:568:556:00
8:48
0:00
25K
15.53 mi13:40:022:18:208:5421:24
8:50
+0:02
30K
18.64 mi14:08:032:46:218:5528:01
9:01
+0:11
20M
20.00 mi14:19:582:58:168:5511:55
8:46
-0:15
21M
21.00 mi14:29:053:07:238:559:07
9:07
+0:21
35K
21.75 mi14:35:213:13:398:546:16
8:23
-0:44
23M
23.00 mi14:45:583:24:168:5310:37
8:29
+0:06
24M
24.00 mi14:54:143:32:328:518:16
8:16
-0:13
40K
24.85 mi15:01:283:39:468:517:14
8:28
+0:12
25.2M
25.20 mi15:04:353:42:538:513:07
9:02
+0:34
Finish
26.22 mi15:12:543:51:128:498:19
8:10
-0:52

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

8:10 /mi

Average Pace

8:49 /mi

Slowest Pace

9:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:43

70% of race

Time at Steady Pace

1:08:29

30% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:49 /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 mi11:49:5628:149:0528:14
9:05
#22797
10K
6.21 mi12:17:2655:448:5827:30
8:51
#22297
15K
9.32 mi12:45:181:23:368:5827:52
8:58
#22153
20K
12.43 mi13:12:381:50:568:5627:20
8:48
#21584
Half
13.11 mi13:18:381:56:568:556:00
8:48
#21542
25K
15.53 mi13:40:022:18:208:5421:24
8:50
#21124
30K
18.64 mi14:08:032:46:218:5528:01
9:01
#20496
20M
20.00 mi14:19:582:58:168:5511:55
8:46
#20143
21M
21.00 mi14:29:053:07:238:559:07
9:07
#19823
35K
21.75 mi14:35:213:13:398:546:16
8:23
#19654
23M
23.00 mi14:45:583:24:168:5310:37
8:29
#19311
24M
24.00 mi14:54:143:32:328:518:16
8:16
#19067
40K
24.85 mi15:01:283:39:468:517:14
8:28
#18843
25.2M
25.20 mi15:04:353:42:538:513:07
9:02
#18747
Finish
26.22 mi15:12:543:51:128:498:19
8:10
#18585
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi22797136631366321884(Top 77%)13342(Top 83%)13342(Top 559%)
10K6.21 mi3.10 mi22297+50013456+20713456+20721640(Top 76%)13188(Top 82%)13188(Top 553%)
15K9.32 mi3.11 mi22153+14413416+4013416+4021884(Top 77%)13342(Top 83%)13342(Top 559%)
20K12.43 mi3.11 mi21584+56913154+26213154+26219917(Top 70%)12426(Top 77%)12426(Top 521%)
Half13.11 mi0.68 mi21542+4213139+1513139+1520846(Top 73%)12822(Top 80%)12822(Top 537%)
25K15.53 mi2.42 mi21124+41812956+18312956+18319052(Top 67%)11995(Top 74%)11995(Top 503%)
30K18.64 mi3.11 mi20496+62812625+33112625+33117777(Top 63%)11271(Top 70%)11271(Top 472%)
20M20.00 mi1.36 mi20143+35312452+17312452+17315485(Top 55%)10148(Top 63%)10148(Top 425%)
21M21.00 mi1.00 mi19823+32012295+15712295+15714193(Top 50%)9430(Top 59%)9430(Top 395%)
35K21.75 mi0.75 mi19654+16912207+8812207+8814725(Top 52%)9607(Top 60%)9607(Top 403%)
23M23.00 mi1.25 mi19311+34312029+17812029+17813178(Top 46%)8788(Top 55%)8788(Top 368%)
24M24.00 mi1.00 mi19067+24411910+11911910+11913025(Top 46%)8672(Top 54%)8672(Top 363%)
40K24.85 mi0.85 mi18843+22411776+13411776+13413179(Top 46%)8618(Top 54%)8618(Top 361%)
25.2M25.20 mi0.35 mi18747+9611724+5211724+5212013(Top 42%)8024(Top 50%)8024(Top 336%)
Finish26.22 mi1.02 mi18585+16211639+8511639+8514010(Top 49%)9030(Top 56%)9030(Top 378%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21story building
+97ft-345ft

Overall

21884

Males

13342

M45-49

13342

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

21640

Males

13188

M45-49

13188

10K→15K

6.2 - 9.3 mi

Top 77%
×3story building
+67ft-78ft

Overall

21884

Males

13342

M45-49

13342

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

19917

Males

12426

M45-49

12426

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

20846

Males

12822

M45-49

12822

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

19052

Males

11995

M45-49

11995

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

17777

Males

11271

M45-49

11271

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

15485

Males

10148

M45-49

10148

20M→21M

20.0 - 21.0 mi

Top 50%
×8story building
+106ft-24ft

Overall

14193

Males

9430

M45-49

9430

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

14725

Males

9607

M45-49

9607

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

13178

Males

8788

M45-49

8788

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

13025

Males

8672

M45-49

8672

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

13179

Males

8618

M45-49

8618

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

12013

Males

8024

M45-49

8024

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

14010

Males

9030

M45-49

9030

Passing Analysis

Category:
Athletes Passed
4467
Passed By
255
Net Change
+4212
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22797
5K → 10K58282+500#22797#22297
10K → 15K261117+144#22297#22153
15K → 20K58213+569#22153#21584
20K → Half5614+42#21584#21542
Half → 25K4246+418#21542#21124
25K → 30K6368+628#21124#20496
30K → 20M3541+353#20496#20143
20M → 21M3211+320#20143#19823
21M → 35K1690+169#19823#19654
35K → 23M3441+343#19654#19311
23M → 24M2462+244#19311#19067
24M → 40K2251+224#19067#18843
40K → 25.2M960+96#18843#18747
25.2M → Finish1719+162#18747#18585
TOTALS4467255+4212
📊

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