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BOSTON MARATHON 2025

Aaron Heun

Bib: 1661•M

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 2%
Gender (Male)
#0 / 16105
Top 4%
Masters (Masters Men)
#0 / 10463
Top 0.8%
Division (M40-44)
#0 / 2247
Top 3%
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
5:56/mi
18:26
↑ 97↓ 3451.5%
10K· 6.21 mi
5:48/mi
36:26
↑ 79↓ 1380.4%
15K· 9.32 mi
5:51/mi
54:35
↑ 67↓ 78
20K· 12.43 mi
5:53/mi
1:12:53
↑ 106↓ 860.1%
Half· 13.11 mi
5:47/mi
1:16:50
↑ 19↓ 370.5%
25K· 15.53 mi
5:53/mi
1:31:07
↑ 66↓ 880.2%
30K· 18.64 mi
6:08/mi
1:50:11
↑ 181↓ 1480.2%
20M
6:17/mi
1:58:43
↑ 64↓ 500.2%
21M
6:43/mi
2:05:26
↑ 106↓ 241.6%
35K· 21.75 mi
6:08/mi
2:10:01
↑ 17↓ 861.7%
23M
6:29/mi
2:18:08
↑ 23↓ 630.6%
24M
6:24/mi
2:24:32
↓ 821.3%
40K· 24.85 mi
6:36/mi
2:30:11
↓ 200.3%
25.2M
7:00/mi
2:32:36
↑ 13↓ 160.2%
Finish· 26.22 mi
6:12/mi
2:38:55
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:16:50
Pace5:52 /mi
2nd Half
Distance13.11 mi
Time1:22:05
Pace6:16 /mi
📊Positive Split: 6.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:5518:265:5618:26
5:56
-
10K
6.21 mi10:36:5536:265:5218:00
5:48
-0:08
15K
9.32 mi10:55:0454:355:5118:09
5:51
+0:03
20K
12.43 mi11:13:221:12:535:5218:18
5:53
+0:02
Half
13.11 mi11:17:191:16:505:523:57
5:47
-0:06
25K
15.53 mi11:31:361:31:075:5214:17
5:53
+0:06
30K
18.64 mi11:50:401:50:115:5519:04
6:08
+0:15
20M
20.00 mi11:59:121:58:435:568:32
6:17
+0:09
21M
21.00 mi12:05:552:05:265:586:43
6:43
+0:26
35K
21.75 mi12:10:302:10:015:594:35
6:08
-0:35
23M
23.00 mi12:18:372:18:086:008:07
6:29
+0:21
24M
24.00 mi12:25:012:24:326:016:24
6:24
-0:05
40K
24.85 mi12:30:402:30:116:035:39
6:36
+0:12
25.2M
25.20 mi12:33:052:32:366:032:25
7:00
+0:24
Finish
26.22 mi12:39:242:38:556:046:19
6:12
-0:48

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

5:47 /mi

Average Pace

6:04 /mi

Slowest Pace

7:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:31:07

57% of race

Time at Steady Pace

38:30

24% of race

Time at Slower Pace

29:18

18% of race

Average Pace: 6:04 /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 mi10:18:5518:265:5618:26
5:56
#881
10K
6.21 mi10:36:5536:265:5218:00
5:48
#721
15K
9.32 mi10:55:0454:355:5118:09
5:51
#679
20K
12.43 mi11:13:221:12:535:5218:18
5:53
#650
Half
13.11 mi11:17:191:16:505:523:57
5:47
#641
25K
15.53 mi11:31:361:31:075:5214:17
5:53
#613
30K
18.64 mi11:50:401:50:115:5519:04
6:08
#615
20M
20.00 mi11:59:121:58:435:568:32
6:17
#631
21M
21.00 mi12:05:552:05:265:586:43
6:43
#637
35K
21.75 mi12:10:302:10:015:594:35
6:08
#639
23M
23.00 mi12:18:372:18:086:008:07
6:29
#661
24M
24.00 mi12:25:012:24:326:016:24
6:24
#680
40K
24.85 mi12:30:402:30:116:035:39
6:36
#695
25.2M
25.20 mi12:33:052:32:366:032:25
7:00
#690
Finish
26.22 mi12:39:242:38:556:046:19
6:12
#706
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi881824824614(Top 2%)571(Top 4%)571(Top 25%)
10K6.21 mi3.10 mi721+160672+152672+152598(Top 2%)559(Top 3%)559(Top 25%)
15K9.32 mi3.11 mi679+42631+41631+41614(Top 2%)571(Top 4%)571(Top 25%)
20K12.43 mi3.11 mi650+29603+28603+28598(Top 2%)551(Top 3%)551(Top 25%)
Half13.11 mi0.68 mi641+9594+9594+9569(Top 2%)535(Top 3%)535(Top 24%)
25K15.53 mi2.42 mi613+28567+27567+27557(Top 2%)515(Top 3%)515(Top 23%)
30K18.64 mi3.11 mi615-2568-1568-1760(Top 3%)712(Top 4%)712(Top 32%)
20M20.00 mi1.36 mi631-16584-16584-16894(Top 3%)842(Top 5%)842(Top 37%)
21M21.00 mi1.00 mi637-6590-6590-61227(Top 4%)1157(Top 7%)1157(Top 51%)
35K21.75 mi0.75 mi639-2592-2592-2997(Top 4%)938(Top 6%)938(Top 42%)
23M23.00 mi1.25 mi661-22613-21613-211384(Top 5%)1301(Top 8%)1301(Top 58%)
24M24.00 mi1.00 mi680-19632-19632-191634(Top 6%)1521(Top 9%)1521(Top 68%)
40K24.85 mi0.85 mi695-15646-14646-141966(Top 7%)1809(Top 11%)1809(Top 81%)
25.2M25.20 mi0.35 mi690+5641+5641+51446(Top 5%)1317(Top 8%)1317(Top 59%)
Finish26.22 mi1.02 mi706-16657-16657-161493(Top 5%)1387(Top 9%)1387(Top 62%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21story building
+97ft-345ft

Overall

614

Males

571

M40-44

571

5K→10K

3.1 - 6.2 mi

Top 2%
×5story building
+79ft-138ft

Overall

598

Males

559

M40-44

559

10K→15K

6.2 - 9.3 mi

Top 2%
×3story building
+67ft-78ft

Overall

614

Males

571

M40-44

571

15K→20K

9.3 - 12.4 mi

Top 2%
×5story building
+106ft-86ft

Overall

598

Males

551

M40-44

551

20K→Half

12.4 - 13.1 mi

Top 2%
×2story building
+19ft-37ft

Overall

569

Males

535

M40-44

535

Half→25K

13.1 - 15.5 mi

Top 2%
×4story building
+66ft-88ft

Overall

557

Males

515

M40-44

515

25K→30K

15.5 - 18.6 mi

Top 3%
×9story building
+181ft-148ft

Overall

760

Males

712

M40-44

712

30K→20M

18.6 - 20.0 mi

Top 3%
×5story building
+64ft-50ft

Overall

894

Males

842

M40-44

842

20M→21M

20.0 - 21.0 mi

Top 4%
×8story building
+106ft-24ft

Overall

1227

Males

1157

M40-44

1157

21M→35K

21.0 - 21.8 mi

Top 4%
×7story building
+17ft-86ft

Overall

997

Males

938

M40-44

938

35K→23M

21.8 - 23.0 mi

Top 5%
×5story building
+23ft-63ft

Overall

1384

Males

1301

M40-44

1301

23M→24M

23.0 - 24.0 mi

Top 6%
×6story building
+12ft-82ft

Overall

1634

Males

1521

M40-44

1521

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1966

Males

1809

M40-44

1809

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1446

Males

1317

M40-44

1317

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2story building
+22ft-21ft

Overall

1493

Males

1387

M40-44

1387

Passing Analysis

Category:
Athletes Passed
400
Passed By
225
Net Change
+175
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#881
5K → 10K1633+160#881#721
10K → 15K497+42#721#679
15K → 20K4112+29#679#650
20K → Half101+9#650#641
Half → 25K346+28#641#613
25K → 30K3335-2#613#615
30K → 20M925-16#615#631
20M → 21M1420-6#631#637
21M → 35K1012-2#637#639
35K → 23M931-22#639#661
23M → 24M524-19#661#680
24M → 40K823-15#680#695
40K → 25.2M94+5#695#690
25.2M → Finish622-16#690#706
TOTALS400225+175
📊

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