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BOSTON MARATHON 2025

Alejandro Alzate Salazar

Bib: 29578•M

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:56
Rank: #8305
Start → 5K
21:56 | 7:04/mi
10K· 6.21 mi
44:15
Rank: #8798 (-493)
5K → 10K
22:19 | 7:11/mi
15K· 9.32 mi
1:07:01
Rank: #9256 (-458)
10K → 15K
22:46 | 7:20/mi
20K· 12.43 mi
1:31:27
Rank: #10382 (-1126)
15K → 20K
24:26 | 7:52/mi
Half· 13.11 mi
1:36:43
Rank: #10549 (-167)
20K → Half
5:16 | 7:43/mi
25K· 15.53 mi
1:56:21
Rank: #11241 (-692)
Half → 25K
19:38 | 8:06/mi
30K· 18.64 mi
2:24:36
Rank: #12713 (-1472)
25K → 30K
28:15 | 9:06/mi
20M
2:38:36
Rank: #13755 (-1042)
30K → 20M
14:00 | 10:18/mi
21M
2:54:25
Rank: #16115 (-2360)
20M → 21M
15:49 | 15:49/mi
35K· 21.75 mi
3:02:01
Rank: #16410 (-295)
21M → 35K
7:36 | 10:10/mi
23M
3:14:44
Rank: #16793 (-383)
35K → 23M
12:43 | 10:09/mi
24M
3:24:16
Rank: #16960 (-167)
23M → 24M
9:32 | 9:32/mi
40K· 24.85 mi
3:32:33
Rank: #17095 (-135)
24M → 40K
8:17 | 9:41/mi
25.2M
3:38:40
Rank: #17734 (-639)
40K → 25.2M
6:07 | 17:44/mi
Finish· 26.22 mi
3:48:18
Rank: #17906 (-172)
25.2M → Finish
9:38 | 9:27/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:43
Pace7:23 /mi
2nd Half
Distance13.11 mi
Time2:11:35
Pace10:02 /mi
📊Positive Split: 36.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:3821:567:0421:56
7:04
-
10K
6.21 mi10:47:5744:157:0722:19
7:11
+0:07
15K
9.32 mi11:10:431:07:017:1122:46
7:20
+0:09
20K
12.43 mi11:35:091:31:277:2224:26
7:52
+0:32
Half
13.11 mi11:40:251:36:437:235:16
7:43
-0:09
25K
15.53 mi12:00:031:56:217:2919:38
8:06
+0:23
30K
18.64 mi12:28:182:24:367:4528:15
9:06
+1:00
20M
20.00 mi12:42:182:38:367:5614:00
10:18
+1:12
21M
21.00 mi12:58:072:54:258:1815:49
15:49
+5:31
35K
21.75 mi13:05:433:02:018:227:36
10:10
-5:39
23M
23.00 mi13:18:263:14:448:2812:43
10:09
-0:01
24M
24.00 mi13:27:583:24:168:319:32
9:32
-0:37
40K
24.85 mi13:36:153:32:338:338:17
9:41
+0:09
25.2M
25.20 mi13:42:223:38:408:416:07
17:44
+8:03
Finish
26.22 mi13:52:003:48:188:439:38
9:27
-8:17

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

7:04 /mi

Average Pace

8:43 /mi

Slowest Pace

17:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:43

42% of race

Time at Steady Pace

1:49:39

48% of race

Time at Slower Pace

21:56

10% of race

Average Pace: 8:42 /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 mi10:25:3821:567:0421:56
7:04
#8305
10K
6.21 mi10:47:5744:157:0722:19
7:11
#8798
15K
9.32 mi11:10:431:07:017:1122:46
7:20
#9256
20K
12.43 mi11:35:091:31:277:2224:26
7:52
#10382
Half
13.11 mi11:40:251:36:437:235:16
7:43
#10549
25K
15.53 mi12:00:031:56:217:2919:38
8:06
#11241
30K
18.64 mi12:28:182:24:367:4528:15
9:06
#12713
20M
20.00 mi12:42:182:38:367:5614:00
10:18
#13755
21M
21.00 mi12:58:072:54:258:1815:49
15:49
#16115
35K
21.75 mi13:05:433:02:018:227:36
10:10
#16410
23M
23.00 mi13:18:263:14:448:2812:43
10:09
#16793
24M
24.00 mi13:27:583:24:168:319:32
9:32
#16960
40K
24.85 mi13:36:153:32:338:338:17
9:41
#17095
25.2M
25.20 mi13:42:223:38:408:416:07
17:44
#17734
Finish
26.22 mi13:52:003:48:188:439:38
9:27
#17906
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi83057193719310218(Top 36%)8206(Top 51%)8206(Top 145%)
10K6.21 mi3.10 mi8798-4937481-2887481-2889343(Top 33%)7797(Top 48%)7797(Top 138%)
15K9.32 mi3.11 mi9256-4587734-2537734-25310218(Top 36%)8206(Top 51%)8206(Top 145%)
20K12.43 mi3.11 mi10382-11268310-5768310-57613791(Top 49%)9778(Top 61%)9778(Top 173%)
Half13.11 mi0.68 mi10549-1678400-908400-9013544(Top 48%)9732(Top 60%)9732(Top 172%)
25K15.53 mi2.42 mi11241-6928702-3028702-30214624(Top 51%)10039(Top 62%)10039(Top 178%)
30K18.64 mi3.11 mi12713-14729304-6029304-60218147(Top 64%)11438(Top 71%)11438(Top 203%)
20M20.00 mi1.36 mi13755-10429722-4189722-41821863(Top 77%)12987(Top 81%)12987(Top 230%)
21M21.00 mi1.00 mi16115-236010703-98110703-98127728(Top 98%)15736(Top 98%)15736(Top 279%)
35K21.75 mi0.75 mi16410-29510817-11410817-11422302(Top 79%)13050(Top 81%)13050(Top 231%)
23M23.00 mi1.25 mi16793-38310941-12410941-12420975(Top 74%)12376(Top 77%)12376(Top 219%)
24M24.00 mi1.00 mi16960-16710982-4110982-4119716(Top 69%)11726(Top 73%)11726(Top 208%)
40K24.85 mi0.85 mi17095-13511010-2811010-2819410(Top 68%)11516(Top 72%)11516(Top 204%)
25.2M25.20 mi0.35 mi17734-63911271-26111271-26128184(Top 99%)15943(Top 99%)15943(Top 283%)
Finish26.22 mi1.02 mi17906-17211339-6811339-6820998(Top 74%)12286(Top 76%)12286(Top 218%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

10218

Males

8206

M18-39

8206

5K→10K

3.1 - 6.2 mi

Top 33%
×5stories
+79ft-138ft

Overall

9343

Males

7797

M18-39

7797

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

10218

Males

8206

M18-39

8206

15K→20K

9.3 - 12.4 mi

Top 49%
×5stories
+106ft-86ft

Overall

13791

Males

9778

M18-39

9778

20K→Half

12.4 - 13.1 mi

Top 48%
×2stories
+19ft-37ft

Overall

13544

Males

9732

M18-39

9732

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

14624

Males

10039

M18-39

10039

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

18147

Males

11438

M18-39

11438

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

21863

Males

12987

M18-39

12987

20M→21M

20.0 - 21.0 mi

Top 98%
×8stories
+106ft-24ft

Overall

27728

Males

15736

M18-39

15736

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

22302

Males

13050

M18-39

13050

35K→23M

21.8 - 23.0 mi

Top 74%
×5stories
+23ft-63ft

Overall

20975

Males

12376

M18-39

12376

23M→24M

23.0 - 24.0 mi

Top 69%
×6stories
+12ft-82ft

Overall

19716

Males

11726

M18-39

11726

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19410

Males

11516

M18-39

11516

40K→25.2M

24.9 - 25.2 mi

Top 99%
×1story
+13ft-16ft

Overall

28184

Males

15943

M18-39

15943

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

20998

Males

12286

M18-39

12286

Passing Analysis

Category:
Athletes Passed
415
Passed By
10014
Net Change
-9601
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8305
5K → 10K64557-493#8305#8798
10K → 15K52510-458#8798#9256
15K → 20K261150-1126#9256#10382
20K → Half8175-167#10382#10549
Half → 25K56748-692#10549#11241
25K → 30K311503-1472#11241#12713
30K → 20M191061-1042#12713#13755
20M → 21M02360-2360#13755#16115
21M → 35K17312-295#16115#16410
35K → 23M42425-383#16410#16793
23M → 24M37204-167#16793#16960
24M → 40K36171-135#16960#17095
40K → 25.2M1640-639#17095#17734
25.2M → Finish26198-172#17734#17906
TOTALS41510014-9601
📊

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