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BOSTON MARATHON 2025

Dan Simpson

Bib: 24080•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M65-69)
#0 / 639
Top 27%
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
8:34/mi
26:37
↑ 97↓ 3451.5%
10K· 6.21 mi
8:43/mi
53:43
↑ 79↓ 1380.4%
15K· 9.32 mi
8:45/mi
1:20:53
↑ 67↓ 78
20K· 12.43 mi
8:45/mi
1:48:04
↑ 106↓ 860.1%
Half· 13.11 mi
8:27/mi
1:53:50
↑ 19↓ 370.5%
25K· 15.53 mi
8:49/mi
2:15:12
↑ 66↓ 880.2%
30K· 18.64 mi
9:02/mi
2:43:17
↑ 181↓ 1480.2%
20M
9:01/mi
2:55:32
↑ 64↓ 500.2%
21M
9:45/mi
3:05:17
↑ 106↓ 241.6%
35K· 21.75 mi
8:39/mi
3:11:45
↑ 17↓ 861.7%
23M
8:50/mi
3:22:49
↑ 23↓ 630.6%
24M
8:36/mi
3:31:25
↓ 821.3%
40K· 24.85 mi
9:07/mi
3:39:13
↓ 200.3%
25.2M
9:49/mi
3:42:36
↑ 13↓ 160.2%
Finish· 26.22 mi
8:34/mi
3:51:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:50
Pace8:41 /mi
2nd Half
Distance13.11 mi
Time1:57:30
Pace8:58 /mi
📊Positive Split: 3.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:0426:378:3426:37
8:34
-
10K
6.21 mi11:53:1053:438:3927:06
8:43
+0:09
15K
9.32 mi12:20:201:20:538:4127:10
8:45
+0:02
20K
12.43 mi12:47:311:48:048:4227:11
8:45
0:00
Half
13.11 mi12:53:171:53:508:415:46
8:27
-0:18
25K
15.53 mi13:14:392:15:128:4221:22
8:49
+0:22
30K
18.64 mi13:42:442:43:178:4628:05
9:02
+0:13
20M
20.00 mi13:54:592:55:328:4712:15
9:01
-0:01
21M
21.00 mi14:04:443:05:178:499:45
9:45
+0:44
35K
21.75 mi14:11:123:11:458:496:28
8:39
-1:06
23M
23.00 mi14:22:163:22:498:4911:04
8:50
+0:11
24M
24.00 mi14:30:523:31:258:498:36
8:36
-0:14
40K
24.85 mi14:38:403:39:138:497:48
9:07
+0:31
25.2M
25.20 mi14:42:033:42:368:503:23
9:49
+0:42
Finish
26.22 mi14:50:473:51:208:508:44
8:34
-1:15

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

8:27 /mi

Average Pace

8:50 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:38:12

94% of race

Time at Steady Pace

13:08

6% 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 mi11:26:0426:378:3426:37
8:34
#20276
10K
6.21 mi11:53:1053:438:3927:06
8:43
#20634
15K
9.32 mi12:20:201:20:538:4127:10
8:45
#20623
20K
12.43 mi12:47:311:48:048:4227:11
8:45
#20390
Half
13.11 mi12:53:171:53:508:415:46
8:27
#20313
25K
15.53 mi13:14:392:15:128:4221:22
8:49
#20076
30K
18.64 mi13:42:442:43:178:4628:05
9:02
#19639
20M
20.00 mi13:54:592:55:328:4712:15
9:01
#19445
21M
21.00 mi14:04:443:05:178:499:45
9:45
#19300
35K
21.75 mi14:11:123:11:458:496:28
8:39
#19196
23M
23.00 mi14:22:163:22:498:4911:04
8:50
#18977
24M
24.00 mi14:30:523:31:258:498:36
8:36
#18817
40K
24.85 mi14:38:403:39:138:497:48
9:07
#18743
25.2M
25.20 mi14:42:033:42:368:503:23
9:49
#18687
Finish
26.22 mi14:50:473:51:208:508:44
8:34
#18606
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi20276125521255220712(Top 73%)12818(Top 80%)12818(Top 2006%)
10K6.21 mi3.10 mi20634-35812724-17212724-17220988(Top 74%)12915(Top 80%)12915(Top 2021%)
15K9.32 mi3.11 mi20623+1112743-1912743-1920712(Top 73%)12818(Top 80%)12818(Top 2006%)
20K12.43 mi3.11 mi20390+23312637+10612637+10619667(Top 69%)12314(Top 76%)12314(Top 1927%)
Half13.11 mi0.68 mi20313+7712598+3912598+3918860(Top 66%)11985(Top 74%)11985(Top 1876%)
25K15.53 mi2.42 mi20076+23712491+10712491+10718983(Top 67%)11962(Top 74%)11962(Top 1872%)
30K18.64 mi3.11 mi19639+43712263+22812263+22817875(Top 63%)11311(Top 70%)11311(Top 1770%)
20M20.00 mi1.36 mi19445+19412160+10312160+10316856(Top 59%)10753(Top 67%)10753(Top 1683%)
21M21.00 mi1.00 mi19300+14512071+8912071+8917247(Top 61%)10806(Top 67%)10806(Top 1691%)
35K21.75 mi0.75 mi19196+10412014+5712014+5716318(Top 57%)10327(Top 64%)10327(Top 1616%)
23M23.00 mi1.25 mi18977+21911886+12811886+12815323(Top 54%)9785(Top 61%)9785(Top 1531%)
24M24.00 mi1.00 mi18817+16011799+8711799+8715159(Top 53%)9661(Top 60%)9661(Top 1512%)
40K24.85 mi0.85 mi18743+7411732+6711732+6716960(Top 60%)10367(Top 64%)10367(Top 1622%)
25.2M25.20 mi0.35 mi18687+5611694+3811694+3816126(Top 57%)9951(Top 62%)9951(Top 1557%)
Finish26.22 mi1.02 mi18606+8111650+4411650+4416664(Top 59%)10238(Top 64%)10238(Top 1602%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21story building
+97ft-345ft

Overall

20712

Males

12818

M65-69

12818

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

20988

Males

12915

M65-69

12915

10K→15K

6.2 - 9.3 mi

Top 73%
×3story building
+67ft-78ft

Overall

20712

Males

12818

M65-69

12818

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

19667

Males

12314

M65-69

12314

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

18860

Males

11985

M65-69

11985

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

18983

Males

11962

M65-69

11962

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

17875

Males

11311

M65-69

11311

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

16856

Males

10753

M65-69

10753

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

17247

Males

10806

M65-69

10806

21M→35K

21.0 - 21.8 mi

Top 57%
×7story building
+17ft-86ft

Overall

16318

Males

10327

M65-69

10327

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

15323

Males

9785

M65-69

9785

23M→24M

23.0 - 24.0 mi

Top 53%
×6story building
+12ft-82ft

Overall

15159

Males

9661

M65-69

9661

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

16960

Males

10367

M65-69

10367

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

16126

Males

9951

M65-69

9951

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

16664

Males

10238

M65-69

10238

Passing Analysis

Category:
Athletes Passed
2664
Passed By
994
Net Change
+1670
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20276
5K → 10K141499-358#20276#20634
10K → 15K202191+11#20634#20623
15K → 20K30370+233#20623#20390
20K → Half858+77#20390#20313
Half → 25K28952+237#20313#20076
25K → 30K47740+437#20076#19639
30K → 20M21420+194#19639#19445
20M → 21M17328+145#19445#19300
21M → 35K1117+104#19300#19196
35K → 23M2278+219#19196#18977
23M → 24M17111+160#18977#18817
24M → 40K10127+74#18817#18743
40K → 25.2M6812+56#18743#18687
25.2M → Finish10221+81#18687#18606
TOTALS2664994+1670
📊

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