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BOSTON MARATHON 2025

Stefano Alessandrini

CO

Bib: 9395 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 28%
Gender (Male)
#0 / 16105
Top 41%
Masters (Masters Men)
#0 / 10463
Top 28%
Division (M50-54)
#0 / 1996
Top 25%
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
6:39/mi
20:40
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
6:48/mi
41:48
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
6:48/mi
1:02:57
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
6:53/mi
1:24:20
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
6:50/mi
1:29:00
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
6:59/mi
1:45:55
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:13/mi
2:08:19
↑ 181↓ 1480.2%
138 ft elev
20M
7:38/mi
2:18:42
↑ 64↓ 500.2%
148 ft elev
21M
8:20/mi
2:27:02
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:00/mi
2:33:01
↑ 17↓ 861.7%
156 ft elev
23M
8:23/mi
2:43:31
↑ 23↓ 630.6%
116 ft elev
24M
8:41/mi
2:52:12
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:18/mi
3:00:09
↓ 200.3%
20 ft elev
25.2M
10:26/mi
3:03:45
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:01/mi
3:12:56
↑ 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
Time1:29:00
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:43:56
Pace7:56 /mi
📊Positive Split: 16.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:4720:406:3920:40
6:39
-
10K
6.21 mi11:06:5541:486:4421:08
6:48
+0:09
15K
9.32 mi11:28:041:02:576:4521:09
6:48
0:00
20K
12.43 mi11:49:271:24:206:4721:23
6:53
+0:05
Half
13.11 mi11:54:071:29:006:474:40
6:50
-0:03
25K
15.53 mi12:11:021:45:556:4916:55
6:59
+0:09
30K
18.64 mi12:33:262:08:196:5322:24
7:13
+0:14
20M
20.00 mi12:43:492:18:426:5610:23
7:38
+0:25
21M
21.00 mi12:52:092:27:027:008:20
8:20
+0:42
35K
21.75 mi12:58:082:33:017:025:59
8:00
-0:20
23M
23.00 mi13:08:382:43:317:0710:30
8:23
+0:23
24M
24.00 mi13:17:192:52:127:118:41
8:41
+0:18
40K
24.85 mi13:25:163:00:097:157:57
9:18
+0:37
25.2M
25.20 mi13:28:523:03:457:183:36
10:26
+1:08
Finish
26.22 mi13:38:033:12:567:229:11
9:01
-1:25

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

6:39 /mi

Average Pace

7:22 /mi

Slowest Pace

10:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:55

55% of race

Time at Steady Pace

38:46

20% of race

Time at Slower Pace

48:15

25% of race

Average Pace: 7:21 /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 mi10:45:4720:406:3920:40
6:39
#5048
10K
6.21 mi11:06:5541:486:4421:08
6:48
#5645
15K
9.32 mi11:28:041:02:576:4521:09
6:48
#5756
20K
12.43 mi11:49:271:24:206:4721:23
6:53
#5826
Half
13.11 mi11:54:071:29:006:474:40
6:50
#5860
25K
15.53 mi12:11:021:45:556:4916:55
6:59
#5882
30K
18.64 mi12:33:262:08:196:5322:24
7:13
#5847
20M
20.00 mi12:43:492:18:426:5610:23
7:38
#5978
21M
21.00 mi12:52:092:27:027:008:20
8:20
#6110
35K
21.75 mi12:58:082:33:017:025:59
8:00
#6242
23M
23.00 mi13:08:382:43:317:0710:30
8:23
#6470
24M
24.00 mi13:17:192:52:127:118:41
8:41
#6818
40K
24.85 mi13:25:163:00:097:157:57
9:18
#7205
25.2M
25.20 mi13:28:523:03:457:183:36
10:26
#7393
Finish
26.22 mi13:38:033:12:567:229:11
9:01
#7872
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5048471447146164(Top 22%)5594(Top 35%)5594(Top 280%)
10K6.21 mi3.10 mi5645-5975217-5035217-5036415(Top 23%)5815(Top 36%)5815(Top 291%)
15K9.32 mi3.11 mi5756-1115295-785295-786164(Top 22%)5594(Top 35%)5594(Top 280%)
20K12.43 mi3.11 mi5826-705340-455340-456066(Top 21%)5489(Top 34%)5489(Top 275%)
Half13.11 mi0.68 mi5860-345373-335373-336502(Top 23%)5842(Top 36%)5842(Top 293%)
25K15.53 mi2.42 mi5882-225364+95364+96181(Top 22%)5531(Top 34%)5531(Top 277%)
30K18.64 mi3.11 mi5847+355321+435321+435968(Top 21%)5287(Top 33%)5287(Top 265%)
20M20.00 mi1.36 mi5978-1315404-835404-837955(Top 28%)6409(Top 40%)6409(Top 321%)
21M21.00 mi1.00 mi6110-1325490-865490-869397(Top 33%)7033(Top 44%)7033(Top 352%)
35K21.75 mi0.75 mi6242-1325586-965586-9612198(Top 43%)8403(Top 52%)8403(Top 421%)
23M23.00 mi1.25 mi6470-2285732-1465732-14612561(Top 44%)8492(Top 53%)8492(Top 425%)
24M24.00 mi1.00 mi6818-3485945-2135945-21315598(Top 55%)9857(Top 61%)9857(Top 494%)
40K24.85 mi0.85 mi7205-3876173-2286173-22817810(Top 63%)10715(Top 67%)10715(Top 537%)
25.2M25.20 mi0.35 mi7393-1886277-1046277-10418699(Top 66%)11143(Top 69%)11143(Top 558%)
Finish26.22 mi1.02 mi7872-4796550-2736550-27319091(Top 67%)11376(Top 71%)11376(Top 570%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21story building
+97ft-345ft

Overall

6164

Males

5594

M50-54

5594

5K→10K

3.1 - 6.2 mi

Top 23%
×5story building
+79ft-138ft

Overall

6415

Males

5815

M50-54

5815

10K→15K

6.2 - 9.3 mi

Top 22%
×3story building
+67ft-78ft

Overall

6164

Males

5594

M50-54

5594

15K→20K

9.3 - 12.4 mi

Top 21%
×5story building
+106ft-86ft

Overall

6066

Males

5489

M50-54

5489

20K→Half

12.4 - 13.1 mi

Top 23%
×2story building
+19ft-37ft

Overall

6502

Males

5842

M50-54

5842

Half→25K

13.1 - 15.5 mi

Top 22%
×4story building
+66ft-88ft

Overall

6181

Males

5531

M50-54

5531

25K→30K

15.5 - 18.6 mi

Top 21%
×9story building
+181ft-148ft

Overall

5968

Males

5287

M50-54

5287

30K→20M

18.6 - 20.0 mi

Top 28%
×5story building
+64ft-50ft

Overall

7955

Males

6409

M50-54

6409

20M→21M

20.0 - 21.0 mi

Top 33%
×8story building
+106ft-24ft

Overall

9397

Males

7033

M50-54

7033

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

12198

Males

8403

M50-54

8403

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

12561

Males

8492

M50-54

8492

23M→24M

23.0 - 24.0 mi

Top 55%
×6story building
+12ft-82ft

Overall

15598

Males

9857

M50-54

9857

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

17810

Males

10715

M50-54

10715

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

18699

Males

11143

M50-54

11143

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

19091

Males

11376

M50-54

11376

Passing Analysis

Category:
Athletes Passed
729
Passed By
3553
Net Change
-2824
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5048
5K → 10K36633-597#5048#5645
10K → 15K93204-111#5645#5756
15K → 20K108178-70#5756#5826
20K → Half1044-34#5826#5860
Half → 25K131153-22#5860#5882
25K → 30K199164+35#5882#5847
30K → 20M38169-131#5847#5978
20M → 21M33165-132#5978#6110
21M → 35K13145-132#6110#6242
35K → 23M36264-228#6242#6470
23M → 24M17365-348#6470#6818
24M → 40K8395-387#6818#7205
40K → 25.2M4192-188#7205#7393
25.2M → Finish3482-479#7393#7872
TOTALS7293553-2824
📊

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