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BOSTON MARATHON 2025

Alessandro Celona

Bib: 4321•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 23%
Gender (Male)
#0 / 16105
Top 35%
Masters (Masters Men)
#0 / 10463
Top 21%
Division (M40-44)
#0 / 2247
Top 48%
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
6:30/mi
20:12
↑ 97↓ 3451.5%
10K· 6.21 mi
6:24/mi
40:04
↑ 79↓ 1380.4%
15K· 9.32 mi
6:28/mi
1:00:11
↑ 67↓ 78
20K· 12.43 mi
6:43/mi
1:21:04
↑ 106↓ 860.1%
Half· 13.11 mi
6:33/mi
1:25:32
↑ 19↓ 370.5%
25K· 15.53 mi
6:53/mi
1:42:14
↑ 66↓ 880.2%
30K· 18.64 mi
7:34/mi
2:05:45
↑ 181↓ 1480.2%
20M
7:49/mi
2:16:22
↑ 64↓ 500.2%
21M
8:32/mi
2:24:54
↑ 106↓ 241.6%
35K· 21.75 mi
7:41/mi
2:30:39
↑ 17↓ 861.7%
23M
7:54/mi
2:40:32
↑ 23↓ 630.6%
24M
7:37/mi
2:48:09
↓ 821.3%
40K· 24.85 mi
7:49/mi
2:54:50
↓ 200.3%
25.2M
8:42/mi
2:57:50
↑ 13↓ 160.2%
Finish· 26.22 mi
9:49/mi
3:07:50
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:32
Pace6:31 /mi
2nd Half
Distance13.11 mi
Time1:42:18
Pace7:48 /mi
📊Positive Split: 19.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:2320:126:3020:12
6:30
-
10K
6.21 mi10:42:1540:046:2719:52
6:24
-0:06
15K
9.32 mi11:02:221:00:116:2720:07
6:28
+0:04
20K
12.43 mi11:23:151:21:046:3120:53
6:43
+0:15
Half
13.11 mi11:27:431:25:326:314:28
6:33
-0:10
25K
15.53 mi11:44:251:42:146:3516:42
6:53
+0:20
30K
18.64 mi12:07:562:05:456:4523:31
7:34
+0:41
20M
20.00 mi12:18:332:16:226:4910:37
7:49
+0:15
21M
21.00 mi12:27:052:24:546:548:32
8:32
+0:43
35K
21.75 mi12:32:502:30:396:565:45
7:41
-0:51
23M
23.00 mi12:42:432:40:326:599:53
7:54
+0:13
24M
24.00 mi12:50:202:48:097:007:37
7:37
-0:17
40K
24.85 mi12:57:012:54:507:026:41
7:49
+0:12
25.2M
25.20 mi13:00:012:57:507:033:00
8:42
+0:53
Finish
26.22 mi13:10:013:07:507:1010:00
9:49
+1:07

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

6:24 /mi

Average Pace

7:10 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:14

54% of race

Time at Steady Pace

1:04:04

34% of race

Time at Slower Pace

21:32

11% of race

Average Pace: 7:10 /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 mi10:22:2320:126:3020:12
6:30
#3847
10K
6.21 mi10:42:1540:046:2719:52
6:24
#3388
15K
9.32 mi11:02:221:00:116:2720:07
6:28
#3366
20K
12.43 mi11:23:151:21:046:3120:53
6:43
#3675
Half
13.11 mi11:27:431:25:326:314:28
6:33
#3687
25K
15.53 mi11:44:251:42:146:3516:42
6:53
#3882
30K
18.64 mi12:07:562:05:456:4523:31
7:34
#4706
20M
20.00 mi12:18:332:16:226:4910:37
7:49
#5088
21M
21.00 mi12:27:052:24:546:548:32
8:32
#5441
35K
21.75 mi12:32:502:30:396:565:45
7:41
#5581
23M
23.00 mi12:42:432:40:326:599:53
7:54
#5678
24M
24.00 mi12:50:202:48:097:007:37
7:37
#5736
40K
24.85 mi12:57:012:54:507:026:41
7:49
#5782
25.2M
25.20 mi13:00:012:57:507:033:00
8:42
#5822
Finish
26.22 mi13:10:013:07:507:1010:00
9:49
#6438
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi3847364036403409(Top 12%)3233(Top 20%)3233(Top 144%)
10K6.21 mi3.10 mi3388+4593217+4233217+4233009(Top 11%)2865(Top 18%)2865(Top 128%)
15K9.32 mi3.11 mi3366+223197+203197+203409(Top 12%)3233(Top 20%)3233(Top 144%)
20K12.43 mi3.11 mi3675-3093475-2783475-2784619(Top 16%)4292(Top 27%)4292(Top 191%)
Half13.11 mi0.68 mi3687-123485-103485-104009(Top 14%)3773(Top 23%)3773(Top 168%)
25K15.53 mi2.42 mi3882-1953658-1733658-1735562(Top 20%)5039(Top 31%)5039(Top 224%)
30K18.64 mi3.11 mi4706-8244367-7094367-7098197(Top 29%)6699(Top 42%)6699(Top 298%)
20M20.00 mi1.36 mi5088-3824682-3154682-3159077(Top 32%)7027(Top 44%)7027(Top 313%)
21M21.00 mi1.00 mi5441-3534972-2904972-29010641(Top 37%)7673(Top 48%)7673(Top 341%)
35K21.75 mi0.75 mi5581-1405076-1045076-1049888(Top 35%)7288(Top 45%)7288(Top 324%)
23M23.00 mi1.25 mi5678-975131-555131-559210(Top 32%)6819(Top 42%)6819(Top 303%)
24M24.00 mi1.00 mi5736-585163-325163-328486(Top 30%)6362(Top 40%)6362(Top 283%)
40K24.85 mi0.85 mi5782-465180-175180-178838(Top 31%)6420(Top 40%)6420(Top 286%)
25.2M25.20 mi0.35 mi5822-405204-245204-249896(Top 35%)6872(Top 43%)6872(Top 306%)
Finish26.22 mi1.02 mi6438-6165619-4155619-41522302(Top 79%)12914(Top 80%)12914(Top 575%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21story building
+97ft-345ft

Overall

3409

Males

3233

M40-44

3233

5K→10K

3.1 - 6.2 mi

Top 11%
×5story building
+79ft-138ft

Overall

3009

Males

2865

M40-44

2865

10K→15K

6.2 - 9.3 mi

Top 12%
×3story building
+67ft-78ft

Overall

3409

Males

3233

M40-44

3233

15K→20K

9.3 - 12.4 mi

Top 16%
×5story building
+106ft-86ft

Overall

4619

Males

4292

M40-44

4292

20K→Half

12.4 - 13.1 mi

Top 14%
×2story building
+19ft-37ft

Overall

4009

Males

3773

M40-44

3773

Half→25K

13.1 - 15.5 mi

Top 20%
×4story building
+66ft-88ft

Overall

5562

Males

5039

M40-44

5039

25K→30K

15.5 - 18.6 mi

Top 29%
×9story building
+181ft-148ft

Overall

8197

Males

6699

M40-44

6699

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

9077

Males

7027

M40-44

7027

20M→21M

20.0 - 21.0 mi

Top 37%
×8story building
+106ft-24ft

Overall

10641

Males

7673

M40-44

7673

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

9888

Males

7288

M40-44

7288

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

9210

Males

6819

M40-44

6819

23M→24M

23.0 - 24.0 mi

Top 30%
×6story building
+12ft-82ft

Overall

8486

Males

6362

M40-44

6362

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8838

Males

6420

M40-44

6420

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9896

Males

6872

M40-44

6872

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2story building
+22ft-21ft

Overall

22302

Males

12914

M40-44

12914

Passing Analysis

Category:
Athletes Passed
892
Passed By
3483
Net Change
-2591
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3847
5K → 10K47718+459#3847#3388
10K → 15K10785+22#3388#3366
15K → 20K30339-309#3366#3675
20K → Half1224-12#3675#3687
Half → 25K34229-195#3687#3882
25K → 30K27851-824#3882#4706
30K → 20M16398-382#4706#5088
20M → 21M16369-353#5088#5441
21M → 35K18158-140#5441#5581
35K → 23M49146-97#5581#5678
23M → 24M43101-58#5678#5736
24M → 40K3884-46#5736#5782
40K → 25.2M1858-40#5782#5822
25.2M → Finish7623-616#5822#6438
TOTALS8923483-2591
📊

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