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BOSTON MARATHON 2025

Aaron Spak

Bib: 646•M

IL

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 9%
Gender (Male)
#0 / 16105
Top 15%
Division (M18-39)
#0 / 5642
Top 35%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:33
Rank: #993
Start → 5K
18:33 | 5:58/mi
10K· 6.21 mi
37:23
Rank: #1121 (-128)
5K → 10K
18:50 | 6:04/mi
15K· 9.32 mi
56:15
Rank: #1160 (-39)
10K → 15K
18:52 | 6:04/mi
20K· 12.43 mi
1:15:26
Rank: #1203 (-43)
15K → 20K
19:11 | 6:10/mi
Half· 13.11 mi
1:19:33
Rank: #1203
20K → Half
4:07 | 6:02/mi
25K· 15.53 mi
1:34:39
Rank: #1253 (-50)
Half → 25K
15:06 | 6:14/mi
30K· 18.64 mi
1:54:47
Rank: #1327 (-74)
25K → 30K
20:08 | 6:29/mi
20M
2:06:07
Rank: #1865 (-538)
30K → 20M
11:20 | 8:20/mi
21M
2:13:42
Rank: #1990 (-125)
20M → 21M
7:35 | 7:35/mi
35K· 21.75 mi
2:19:22
Rank: #2174 (-184)
21M → 35K
5:40 | 7:34/mi
23M
2:30:30
Rank: #2765 (-591)
35K → 23M
11:08 | 8:54/mi
24M
2:37:02
Rank: #2692 (+73)
23M → 24M
6:32 | 6:32/mi
40K· 24.85 mi
2:43:15
Rank: #2747 (-55)
24M → 40K
6:13 | 7:16/mi
25.2M
2:45:44
Rank: #2714 (+33)
40K → 25.2M
2:29 | 7:12/mi
Finish· 26.22 mi
2:51:55
Rank: #2622 (+92)
25.2M → Finish
6:11 | 6:04/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:33
Pace6:04 /mi
2nd Half
Distance13.11 mi
Time1:32:22
Pace7:03 /mi
📊Positive Split: 16.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:5018:335:5818:33
5:58
-
10K
6.21 mi10:37:4037:236:0118:50
6:04
+0:06
15K
9.32 mi10:56:3256:156:0218:52
6:04
0:00
20K
12.43 mi11:15:431:15:266:0419:11
6:10
+0:06
Half
13.11 mi11:19:501:19:336:044:07
6:02
-0:08
25K
15.53 mi11:34:561:34:396:0615:06
6:14
+0:12
30K
18.64 mi11:55:041:54:476:0920:08
6:29
+0:15
20M
20.00 mi12:06:242:06:076:1811:20
8:20
+1:51
21M
21.00 mi12:13:592:13:426:227:35
7:35
-0:45
35K
21.75 mi12:19:392:19:226:245:40
7:34
-0:01
23M
23.00 mi12:30:472:30:306:3311:08
8:54
+1:20
24M
24.00 mi12:37:192:37:026:336:32
6:32
-2:22
40K
24.85 mi12:43:322:43:156:346:13
7:16
+0:44
25.2M
25.20 mi12:46:012:45:446:352:29
7:12
-0:04
Finish
26.22 mi12:52:122:51:556:346:11
6:04
-1:08

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

5:58 /mi

Average Pace

6:34 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

22:40

13% of race

Time at Steady Pace

1:44:50

61% of race

Time at Slower Pace

44:25

26% of race

Average Pace: 6:33 /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 mi10:18:5018:335:5818:33
5:58
#993
10K
6.21 mi10:37:4037:236:0118:50
6:04
#1121
15K
9.32 mi10:56:3256:156:0218:52
6:04
#1160
20K
12.43 mi11:15:431:15:266:0419:11
6:10
#1203
Half
13.11 mi11:19:501:19:336:044:07
6:02
#1203
25K
15.53 mi11:34:561:34:396:0615:06
6:14
#1253
30K
18.64 mi11:55:041:54:476:0920:08
6:29
#1327
20M
20.00 mi12:06:242:06:076:1811:20
8:20
#1865
21M
21.00 mi12:13:592:13:426:227:35
7:35
#1990
35K
21.75 mi12:19:392:19:226:245:40
7:34
#2174
23M
23.00 mi12:30:472:30:306:3311:08
8:54
#2765
24M
24.00 mi12:37:192:37:026:336:32
6:32
#2692
40K
24.85 mi12:43:322:43:156:346:13
7:16
#2747
25.2M
25.20 mi12:46:012:45:446:352:29
7:12
#2714
Finish
26.22 mi12:52:122:51:556:346:11
6:04
#2622
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi9939349341275(Top 4%)1210(Top 8%)1210(Top 21%)
10K6.21 mi3.10 mi1121-1281058-1241058-1241339(Top 5%)1270(Top 8%)1270(Top 23%)
15K9.32 mi3.11 mi1160-391098-401098-401275(Top 4%)1210(Top 8%)1210(Top 21%)
20K12.43 mi3.11 mi1203-431141-431141-431484(Top 5%)1406(Top 9%)1406(Top 25%)
Half13.11 mi0.68 mi1203114111411318(Top 5%)1252(Top 8%)1252(Top 22%)
25K15.53 mi2.42 mi1253-501185-441185-441587(Top 6%)1508(Top 9%)1508(Top 27%)
30K18.64 mi3.11 mi1327-741252-671252-671901(Top 7%)1811(Top 11%)1811(Top 32%)
20M20.00 mi1.36 mi1865-5381774-5221774-52212722(Top 45%)8864(Top 55%)8864(Top 157%)
21M21.00 mi1.00 mi1990-1251893-1191893-1195036(Top 18%)4403(Top 27%)4403(Top 78%)
35K21.75 mi0.75 mi2174-1842073-1802073-1809108(Top 32%)6898(Top 43%)6898(Top 122%)
23M23.00 mi1.25 mi2765-5912625-5522625-55215604(Top 55%)9886(Top 61%)9886(Top 175%)
24M24.00 mi1.00 mi2692+732554+712554+712201(Top 8%)2041(Top 13%)2041(Top 36%)
40K24.85 mi0.85 mi2747-552603-492603-495478(Top 19%)4538(Top 28%)4538(Top 80%)
25.2M25.20 mi0.35 mi2714+332570+332570+332179(Top 8%)1968(Top 12%)1968(Top 35%)
Finish26.22 mi1.02 mi2622+922482+882482+881120(Top 4%)1050(Top 7%)1050(Top 19%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21stories
+97ft-345ft

Overall

1275

Males

1210

M18-39

1210

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1339

Males

1270

M18-39

1270

10K→15K

6.2 - 9.3 mi

Top 4%
×3stories
+67ft-78ft

Overall

1275

Males

1210

M18-39

1210

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1484

Males

1406

M18-39

1406

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1318

Males

1252

M18-39

1252

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1587

Males

1508

M18-39

1508

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1901

Males

1811

M18-39

1811

30K→20M

18.6 - 20.0 mi

Top 45%
×5stories
+64ft-50ft

Overall

12722

Males

8864

M18-39

8864

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

5036

Males

4403

M18-39

4403

21M→35K

21.0 - 21.8 mi

Top 32%
×7stories
+17ft-86ft

Overall

9108

Males

6898

M18-39

6898

35K→23M

21.8 - 23.0 mi

Top 55%
×5stories
+23ft-63ft

Overall

15604

Males

9886

M18-39

9886

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2201

Males

2041

M18-39

2041

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5478

Males

4538

M18-39

4538

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2179

Males

1968

M18-39

1968

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

1120

Males

1050

M18-39

1050

Passing Analysis

Category:
Athletes Passed
384
Passed By
2013
Net Change
-1629
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#993
5K → 10K17145-128#993#1121
10K → 15K2160-39#1121#1160
15K → 20K2871-43#1160#1203
20K → Half660#1203#1203
Half → 25K2272-50#1203#1253
25K → 30K32106-74#1253#1327
30K → 20M0538-538#1327#1865
20M → 21M12137-125#1865#1990
21M → 35K7191-184#1990#2174
35K → 23M4595-591#2174#2765
23M → 24M818+73#2765#2692
24M → 40K2378-55#2692#2747
40K → 25.2M374+33#2747#2714
25.2M → Finish942+92#2714#2622
TOTALS3842013-1629
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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