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BOSTON MARATHON 2025

Harrison Grayson

MD

Bib: 24952 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M70-74)
#0 / 228
Top 27%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:24/mi
26:07
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:32/mi
52:38
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:45/mi
1:19:50
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:58/mi
1:50:47
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:29/mi
1:56:34
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:47/mi
2:17:51
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:04/mi
2:46:01
↑ 181↓ 1480.2%
138 ft elev
20M
9:33/mi
2:58:59
↑ 64↓ 500.2%
148 ft elev
21M
10:32/mi
3:09:31
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:25/mi
3:16:34
↑ 17↓ 861.7%
156 ft elev
23M
10:13/mi
3:29:22
↑ 23↓ 630.6%
116 ft elev
24M
10:11/mi
3:39:33
↓ 821.3%
34 ft elev
40K· 24.85 mi
11:02/mi
3:48:59
↓ 200.3%
20 ft elev
25.2M
16:38/mi
3:54:43
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
11:19/mi
4:06:15
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:34
Pace8:53 /mi
2nd Half
Distance13.11 mi
Time2:09:41
Pace9:54 /mi
📊Positive Split: 11.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:0626:078:2426:07
8:24
-
10K
6.21 mi11:52:3752:388:2826:31
8:32
+0:08
15K
9.32 mi12:19:491:19:508:3427:12
8:45
+0:13
20K
12.43 mi12:50:461:50:478:5530:57
9:58
+1:13
Half
13.11 mi12:56:331:56:348:535:47
8:29
-1:29
25K
15.53 mi13:17:502:17:518:5221:17
8:47
+0:18
30K
18.64 mi13:46:002:46:018:5428:10
9:04
+0:17
20M
20.00 mi13:58:582:58:598:5712:58
9:33
+0:29
21M
21.00 mi14:09:303:09:319:0110:32
10:32
+0:59
35K
21.75 mi14:16:333:16:349:027:03
9:25
-1:07
23M
23.00 mi14:29:213:29:229:0612:48
10:13
+0:48
24M
24.00 mi14:39:323:39:339:0910:11
10:11
-0:02
40K
24.85 mi14:48:583:48:599:139:26
11:02
+0:51
25.2M
25.20 mi14:54:423:54:439:195:44
16:38
+5:36
Finish
26.22 mi15:06:144:06:159:2411:32
11:19
-5:19

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

8:24 /mi

Average Pace

9:24 /mi

Slowest Pace

16:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

58:25

24% of race

Time at Steady Pace

2:41:08

65% of race

Time at Slower Pace

26:42

11% of race

Average Pace: 9:24 /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 mi11:26:0626:078:2426:07
8:24
#19341
10K
6.21 mi11:52:3752:388:2826:31
8:32
#19648
15K
9.32 mi12:19:491:19:508:3427:12
8:45
#20054
20K
12.43 mi12:50:461:50:478:5530:57
9:58
#21527
Half
13.11 mi12:56:331:56:348:535:47
8:29
#21398
25K
15.53 mi13:17:502:17:518:5221:17
8:47
#20963
30K
18.64 mi13:46:002:46:018:5428:10
9:04
#20397
20M
20.00 mi13:58:582:58:598:5712:58
9:33
#20325
21M
21.00 mi14:09:303:09:319:0110:32
10:32
#20317
35K
21.75 mi14:16:333:16:349:027:03
9:25
#20294
23M
23.00 mi14:29:213:29:229:0612:48
10:13
#20389
24M
24.00 mi14:39:323:39:339:0910:11
10:11
#20500
40K
24.85 mi14:48:583:48:599:139:26
11:02
#20672
25.2M
25.20 mi14:54:423:54:439:195:44
16:38
#20950
Finish
26.22 mi15:06:144:06:159:2411:32
11:19
#21226
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM70-74Seg. OverallSeg. MalesSeg. M70-74
5K3.11 mi3.11 mi19341121811218120780(Top 73%)12848(Top 80%)12848(Top 5635%)
10K6.21 mi3.10 mi19648-30712324-14312324-14319996(Top 70%)12480(Top 77%)12480(Top 5474%)
15K9.32 mi3.11 mi20054-40612502-17812502-17820780(Top 73%)12848(Top 80%)12848(Top 5635%)
20K12.43 mi3.11 mi21527-147313139-63713139-63724147(Top 85%)14289(Top 89%)14289(Top 6267%)
Half13.11 mi0.68 mi21398+12913077+6213077+6219039(Top 67%)12079(Top 75%)12079(Top 5298%)
25K15.53 mi2.42 mi20963+43512889+18812889+18818811(Top 66%)11884(Top 74%)11884(Top 5212%)
30K18.64 mi3.11 mi20397+56612580+30912580+30918008(Top 63%)11388(Top 71%)11388(Top 4995%)
20M20.00 mi1.36 mi20325+7212533+4712533+4719355(Top 68%)11858(Top 74%)11858(Top 5201%)
21M21.00 mi1.00 mi20317+812506+2712506+2720104(Top 71%)12086(Top 75%)12086(Top 5301%)
35K21.75 mi0.75 mi20294+2312482+2412482+2420035(Top 71%)11989(Top 74%)11989(Top 5258%)
23M23.00 mi1.25 mi20389-9512504-2212504-2221193(Top 75%)12488(Top 78%)12488(Top 5477%)
24M24.00 mi1.00 mi20500-11112544-4012544-4021879(Top 77%)12747(Top 79%)12747(Top 5591%)
40K24.85 mi0.85 mi20672-17212604-6012604-6023211(Top 82%)13338(Top 83%)13338(Top 5850%)
25.2M25.20 mi0.35 mi20950-27812712-10812712-10827955(Top 98%)15794(Top 98%)15794(Top 6927%)
Finish26.22 mi1.02 mi21226-27612823-11112823-11125884(Top 91%)14721(Top 91%)14721(Top 6457%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21story building
+97ft-345ft

Overall

20780

Males

12848

M70-74

12848

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

19996

Males

12480

M70-74

12480

10K→15K

6.2 - 9.3 mi

Top 73%
×3story building
+67ft-78ft

Overall

20780

Males

12848

M70-74

12848

15K→20K

9.3 - 12.4 mi

Top 85%
×5story building
+106ft-86ft

Overall

24147

Males

14289

M70-74

14289

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

19039

Males

12079

M70-74

12079

Half→25K

13.1 - 15.5 mi

Top 66%
×4story building
+66ft-88ft

Overall

18811

Males

11884

M70-74

11884

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

18008

Males

11388

M70-74

11388

30K→20M

18.6 - 20.0 mi

Top 68%
×5story building
+64ft-50ft

Overall

19355

Males

11858

M70-74

11858

20M→21M

20.0 - 21.0 mi

Top 71%
×8story building
+106ft-24ft

Overall

20104

Males

12086

M70-74

12086

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

20035

Males

11989

M70-74

11989

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

21193

Males

12488

M70-74

12488

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

21879

Males

12747

M70-74

12747

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

23211

Males

13338

M70-74

13338

40K→25.2M

24.9 - 25.2 mi

Top 98%
×1story
+13ft-16ft

Overall

27955

Males

15794

M70-74

15794

25.2M→Finish

25.2 - 26.2 mi

Top 91%
×2story building
+22ft-21ft

Overall

25884

Males

14721

M70-74

14721

Passing Analysis

Category:
Athletes Passed
1812
Passed By
3697
Net Change
-1885
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19341
5K → 10K138445-307#19341#19648
10K → 15K93499-406#19648#20054
15K → 20K221495-1473#20054#21527
20K → Half1301+129#21527#21398
Half → 25K4383+435#21398#20963
25K → 30K58216+566#20963#20397
30K → 20M13058+72#20397#20325
20M → 21M9890+8#20325#20317
21M → 35K6037+23#20317#20294
35K → 23M67162-95#20294#20389
23M → 24M28139-111#20389#20500
24M → 40K17189-172#20500#20672
40K → 25.2M2280-278#20672#20950
25.2M → Finish7283-276#20950#21226
TOTALS18123697-1885
📊

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