Boston Marathon logo
BOSTON MARATHON 2025

Alessandro Conzatti

Bib: 3803•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 27%
Gender (Male)
#0 / 16105
Top 40%
Division (M18-39)
#0 / 5642
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
6:27/mi
20:01
↑ 97↓ 3451.5%
10K· 6.21 mi
6:27/mi
40:04
↑ 79↓ 1380.4%
15K· 9.32 mi
6:28/mi
1:00:11
↑ 67↓ 78
20K· 12.43 mi
6:40/mi
1:20:55
↑ 106↓ 860.1%
Half· 13.11 mi
6:42/mi
1:25:29
↑ 19↓ 370.5%
25K· 15.53 mi
6:48/mi
1:41:59
↑ 66↓ 880.2%
30K· 18.64 mi
7:22/mi
2:04:51
↑ 181↓ 1480.2%
20M
7:44/mi
2:15:21
↑ 64↓ 500.2%
21M
8:18/mi
2:23:39
↑ 106↓ 241.6%
35K· 21.75 mi
7:44/mi
2:29:26
↑ 17↓ 861.7%
23M
8:14/mi
2:39:44
↑ 23↓ 630.6%
24M
8:47/mi
2:48:31
↓ 821.3%
40K· 24.85 mi
10:42/mi
2:57:40
↓ 200.3%
25.2M
13:38/mi
3:02:22
↑ 13↓ 160.2%
Finish· 26.22 mi
9:30/mi
3:12:03
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:29
Pace6:31 /mi
2nd Half
Distance13.11 mi
Time1:46:34
Pace8:08 /mi
📊Positive Split: 24.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:5820:016:2720:01
6:27
-
10K
6.21 mi10:42:0140:046:2720:03
6:27
0:00
15K
9.32 mi11:02:081:00:116:2720:07
6:28
+0:01
20K
12.43 mi11:22:521:20:556:3120:44
6:40
+0:12
Half
13.11 mi11:27:261:25:296:314:34
6:42
+0:02
25K
15.53 mi11:43:561:41:596:3416:30
6:48
+0:06
30K
18.64 mi12:06:482:04:516:4222:52
7:22
+0:34
20M
20.00 mi12:17:182:15:216:4610:30
7:44
+0:22
21M
21.00 mi12:25:362:23:396:508:18
8:18
+0:34
35K
21.75 mi12:31:232:29:266:525:47
7:44
-0:34
23M
23.00 mi12:41:412:39:446:5710:18
8:14
+0:30
24M
24.00 mi12:50:282:48:317:018:47
8:47
+0:33
40K
24.85 mi12:59:372:57:407:099:09
10:42
+1:55
25.2M
25.20 mi13:04:193:02:227:144:42
13:38
+2:56
Finish
26.22 mi13:14:003:12:037:209:41
9:30
-4:08

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

6:27 /mi

Average Pace

7:20 /mi

Slowest Pace

13:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:25:29

45% of race

Time at Steady Pace

1:14:15

39% of race

Time at Slower Pace

32:19

17% of race

Average Pace: 7:19 /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 mi10:21:5820:016:2720:01
6:27
#3417
10K
6.21 mi10:42:0140:046:2720:03
6:27
#3389
15K
9.32 mi11:02:081:00:116:2720:07
6:28
#3367
20K
12.43 mi11:22:521:20:556:3120:44
6:40
#3596
Half
13.11 mi11:27:261:25:296:314:34
6:42
#3668
25K
15.53 mi11:43:561:41:596:3416:30
6:48
#3788
30K
18.64 mi12:06:482:04:516:4222:52
7:22
#4301
20M
20.00 mi12:17:182:15:216:4610:30
7:44
#4670
21M
21.00 mi12:25:362:23:396:508:18
8:18
#4951
35K
21.75 mi12:31:232:29:266:525:47
7:44
#5163
23M
23.00 mi12:41:412:39:446:5710:18
8:14
#5470
24M
24.00 mi12:50:282:48:317:018:47
8:47
#5830
40K
24.85 mi12:59:372:57:407:099:09
10:42
#6484
25.2M
25.20 mi13:04:193:02:227:144:42
13:38
#7023
Finish
26.22 mi13:14:003:12:037:209:41
9:30
#7622
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3417324632463411(Top 12%)3235(Top 20%)3235(Top 57%)
10K6.21 mi3.10 mi3389+283218+283218+283391(Top 12%)3220(Top 20%)3220(Top 57%)
15K9.32 mi3.11 mi3367+223198+203198+203411(Top 12%)3235(Top 20%)3235(Top 57%)
20K12.43 mi3.11 mi3596-2293405-2073405-2074204(Top 15%)3941(Top 24%)3941(Top 70%)
Half13.11 mi0.68 mi3668-723468-633468-635218(Top 18%)4813(Top 30%)4813(Top 85%)
25K15.53 mi2.42 mi3788-1203570-1023570-1024912(Top 17%)4513(Top 28%)4513(Top 80%)
30K18.64 mi3.11 mi4301-5134024-4544024-4546806(Top 24%)5850(Top 36%)5850(Top 104%)
20M20.00 mi1.36 mi4670-3694330-3064330-3068506(Top 30%)6724(Top 42%)6724(Top 119%)
21M21.00 mi1.00 mi4951-2814561-2314561-2319180(Top 32%)6910(Top 43%)6910(Top 122%)
35K21.75 mi0.75 mi5163-2124731-1704731-17010229(Top 36%)7463(Top 46%)7463(Top 132%)
23M23.00 mi1.25 mi5470-3074973-2424973-24211490(Top 40%)7974(Top 50%)7974(Top 141%)
24M24.00 mi1.00 mi5830-3605230-2575230-25716179(Top 57%)10094(Top 63%)10094(Top 179%)
40K24.85 mi0.85 mi6484-6545690-4605690-46022433(Top 79%)12940(Top 80%)12940(Top 229%)
25.2M25.20 mi0.35 mi7023-5396035-3456035-34525826(Top 91%)14651(Top 91%)14651(Top 260%)
Finish26.22 mi1.02 mi7622-5996386-3516386-35121167(Top 75%)12364(Top 77%)12364(Top 219%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21story building
+97ft-345ft

Overall

3411

Males

3235

M18-39

3235

5K→10K

3.1 - 6.2 mi

Top 12%
×5story building
+79ft-138ft

Overall

3391

Males

3220

M18-39

3220

10K→15K

6.2 - 9.3 mi

Top 12%
×3story building
+67ft-78ft

Overall

3411

Males

3235

M18-39

3235

15K→20K

9.3 - 12.4 mi

Top 15%
×5story building
+106ft-86ft

Overall

4204

Males

3941

M18-39

3941

20K→Half

12.4 - 13.1 mi

Top 18%
×2story building
+19ft-37ft

Overall

5218

Males

4813

M18-39

4813

Half→25K

13.1 - 15.5 mi

Top 17%
×4story building
+66ft-88ft

Overall

4912

Males

4513

M18-39

4513

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6806

Males

5850

M18-39

5850

30K→20M

18.6 - 20.0 mi

Top 30%
×5story building
+64ft-50ft

Overall

8506

Males

6724

M18-39

6724

20M→21M

20.0 - 21.0 mi

Top 32%
×8story building
+106ft-24ft

Overall

9180

Males

6910

M18-39

6910

21M→35K

21.0 - 21.8 mi

Top 36%
×7story building
+17ft-86ft

Overall

10229

Males

7463

M18-39

7463

35K→23M

21.8 - 23.0 mi

Top 40%
×5story building
+23ft-63ft

Overall

11490

Males

7974

M18-39

7974

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

16179

Males

10094

M18-39

10094

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

22433

Males

12940

M18-39

12940

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

25826

Males

14651

M18-39

14651

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

21167

Males

12364

M18-39

12364

Passing Analysis

Category:
Athletes Passed
467
Passed By
4672
Net Change
-4205
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3417
5K → 10K137109+28#3417#3389
10K → 15K10785+22#3389#3367
15K → 20K44273-229#3367#3596
20K → Half274-72#3596#3668
Half → 25K45165-120#3668#3788
25K → 30K34547-513#3788#4301
30K → 20M14383-369#4301#4670
20M → 21M19300-281#4670#4951
21M → 35K16228-212#4951#5163
35K → 23M31338-307#5163#5470
23M → 24M8368-360#5470#5830
24M → 40K4658-654#5830#6484
40K → 25.2M0539-539#6484#7023
25.2M → Finish6605-599#7023#7622
TOTALS4674672-4205
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing