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BOSTON MARATHON 2025

Matthew Iezzi

Bib: 2488•M

ON

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 5%
Gender (Male)
#0 / 16105
Top 8%
Division (M18-39)
#0 / 5642
Top 20%
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
6:14/mi
19:22
↑ 97↓ 3451.5%
10K· 6.21 mi
6:11/mi
38:34
↑ 79↓ 1380.4%
15K· 9.32 mi
6:07/mi
57:33
↑ 67↓ 78
20K· 12.43 mi
6:13/mi
1:16:53
↑ 106↓ 860.1%
Half· 13.11 mi
6:09/mi
1:21:05
↑ 19↓ 370.5%
25K· 15.53 mi
6:15/mi
1:36:15
↑ 66↓ 880.2%
30K· 18.64 mi
6:26/mi
1:56:15
↑ 181↓ 1480.2%
20M
6:26/mi
2:05:00
↑ 64↓ 500.2%
21M
6:50/mi
2:11:50
↑ 106↓ 241.6%
35K· 21.75 mi
6:12/mi
2:16:28
↑ 17↓ 861.7%
23M
6:27/mi
2:24:32
↑ 23↓ 630.6%
24M
6:17/mi
2:30:49
↓ 821.3%
40K· 24.85 mi
6:31/mi
2:36:23
↓ 200.3%
25.2M
7:21/mi
2:38:55
↑ 13↓ 160.2%
Finish· 26.22 mi
6:17/mi
2:45:19
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:05
Pace6:11 /mi
2nd Half
Distance13.11 mi
Time1:24:14
Pace6:26 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:5319:226:1419:22
6:14
-
10K
6.21 mi10:41:0538:346:1219:12
6:11
-0:03
15K
9.32 mi11:00:0457:336:1018:59
6:07
-0:04
20K
12.43 mi11:19:241:16:536:1119:20
6:13
+0:06
Half
13.11 mi11:23:361:21:056:114:12
6:09
-0:04
25K
15.53 mi11:38:461:36:156:1215:10
6:15
+0:06
30K
18.64 mi11:58:461:56:156:1420:00
6:26
+0:11
20M
20.00 mi12:07:312:05:006:158:45
6:26
0:00
21M
21.00 mi12:14:212:11:506:176:50
6:50
+0:24
35K
21.75 mi12:18:592:16:286:164:38
6:12
-0:38
23M
23.00 mi12:27:032:24:326:178:04
6:27
+0:15
24M
24.00 mi12:33:202:30:496:176:17
6:17
-0:10
40K
24.85 mi12:38:542:36:236:185:34
6:31
+0:14
25.2M
25.20 mi12:41:262:38:556:182:32
7:21
+0:50
Finish
26.22 mi12:47:502:45:196:196:24
6:17
-1:04

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

6:07 /mi

Average Pace

6:19 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

18:59

11% of race

Time at Steady Pace

2:03:20

75% of race

Time at Slower Pace

23:00

14% of race

Average Pace: 6:18 /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 mi10:21:5319:226:1419:22
6:14
#2040
10K
6.21 mi10:41:0538:346:1219:12
6:11
#1901
15K
9.32 mi11:00:0457:336:1018:59
6:07
#1737
20K
12.43 mi11:19:241:16:536:1119:20
6:13
#1698
Half
13.11 mi11:23:361:21:056:114:12
6:09
#1699
25K
15.53 mi11:38:461:36:156:1215:10
6:15
#1668
30K
18.64 mi11:58:461:56:156:1420:00
6:26
#1641
20M
20.00 mi12:07:312:05:006:158:45
6:26
#1598
21M
21.00 mi12:14:212:11:506:176:50
6:50
#1575
35K
21.75 mi12:18:592:16:286:164:38
6:12
#1534
23M
23.00 mi12:27:032:24:326:178:04
6:27
#1482
24M
24.00 mi12:33:202:30:496:176:17
6:17
#1439
40K
24.85 mi12:38:542:36:236:185:34
6:31
#1424
25.2M
25.20 mi12:41:262:38:556:182:32
7:21
#1437
Finish
26.22 mi12:47:502:45:196:196:24
6:17
#1428
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2040194219421432(Top 5%)1363(Top 8%)1363(Top 24%)
10K6.21 mi3.10 mi1901+1391810+1321810+1321802(Top 6%)1711(Top 11%)1711(Top 30%)
15K9.32 mi3.11 mi1737+1641651+1591651+1591432(Top 5%)1363(Top 8%)1363(Top 24%)
20K12.43 mi3.11 mi1698+391613+381613+381663(Top 6%)1581(Top 10%)1581(Top 28%)
Half13.11 mi0.68 mi1699-11614-11614-11739(Top 6%)1655(Top 10%)1655(Top 29%)
25K15.53 mi2.42 mi1668+311585+291585+291661(Top 6%)1578(Top 10%)1578(Top 28%)
30K18.64 mi3.11 mi1641+271557+281557+281699(Top 6%)1612(Top 10%)1612(Top 29%)
20M20.00 mi1.36 mi1598+431514+431514+431377(Top 5%)1302(Top 8%)1302(Top 23%)
21M21.00 mi1.00 mi1575+231492+221492+221625(Top 6%)1534(Top 10%)1534(Top 27%)
35K21.75 mi0.75 mi1534+411452+401452+401201(Top 4%)1132(Top 7%)1132(Top 20%)
23M23.00 mi1.25 mi1482+521401+511401+511278(Top 4%)1203(Top 7%)1203(Top 21%)
24M24.00 mi1.00 mi1439+431359+421359+421258(Top 4%)1177(Top 7%)1177(Top 21%)
40K24.85 mi0.85 mi1424+151345+141345+141624(Top 6%)1500(Top 9%)1500(Top 27%)
25.2M25.20 mi0.35 mi1437-131357-121357-122658(Top 9%)2360(Top 15%)2360(Top 42%)
Finish26.22 mi1.02 mi1428+91348+91348+91800(Top 6%)1663(Top 10%)1663(Top 29%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21story building
+97ft-345ft

Overall

1432

Males

1363

M18-39

1363

5K→10K

3.1 - 6.2 mi

Top 6%
×5story building
+79ft-138ft

Overall

1802

Males

1711

M18-39

1711

10K→15K

6.2 - 9.3 mi

Top 5%
×3story building
+67ft-78ft

Overall

1432

Males

1363

M18-39

1363

15K→20K

9.3 - 12.4 mi

Top 6%
×5story building
+106ft-86ft

Overall

1663

Males

1581

M18-39

1581

20K→Half

12.4 - 13.1 mi

Top 6%
×2story building
+19ft-37ft

Overall

1739

Males

1655

M18-39

1655

Half→25K

13.1 - 15.5 mi

Top 6%
×4story building
+66ft-88ft

Overall

1661

Males

1578

M18-39

1578

25K→30K

15.5 - 18.6 mi

Top 6%
×9story building
+181ft-148ft

Overall

1699

Males

1612

M18-39

1612

30K→20M

18.6 - 20.0 mi

Top 5%
×5story building
+64ft-50ft

Overall

1377

Males

1302

M18-39

1302

20M→21M

20.0 - 21.0 mi

Top 6%
×8story building
+106ft-24ft

Overall

1625

Males

1534

M18-39

1534

21M→35K

21.0 - 21.8 mi

Top 4%
×7story building
+17ft-86ft

Overall

1201

Males

1132

M18-39

1132

35K→23M

21.8 - 23.0 mi

Top 4%
×5story building
+23ft-63ft

Overall

1278

Males

1203

M18-39

1203

23M→24M

23.0 - 24.0 mi

Top 4%
×6story building
+12ft-82ft

Overall

1258

Males

1177

M18-39

1177

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1624

Males

1500

M18-39

1500

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2658

Males

2360

M18-39

2360

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2story building
+22ft-21ft

Overall

1800

Males

1663

M18-39

1663

Passing Analysis

Category:
Athletes Passed
901
Passed By
289
Net Change
+612
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2040
5K → 10K19556+139#2040#1901
10K → 15K1717+164#1901#1737
15K → 20K6930+39#1737#1698
20K → Half89-1#1698#1699
Half → 25K6029+31#1699#1668
25K → 30K7548+27#1668#1641
30K → 20M5714+43#1641#1598
20M → 21M4825+23#1598#1575
21M → 35K454+41#1575#1534
35K → 23M6513+52#1534#1482
23M → 24M5310+43#1482#1439
24M → 40K2611+15#1439#1424
40K → 25.2M316-13#1424#1437
25.2M → Finish2617+9#1437#1428
TOTALS901289+612
📊

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