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BOSTON MARATHON 2025

Denise Iannizzotto

Bib: 17114•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 49%
Masters (Masters Women)
#0 / 6759
Top 38%
Division (F60-64)
#0 / 624
Top 8%
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
8:10/mi
25:23
↑ 97↓ 3451.5%
10K· 6.21 mi
8:02/mi
50:19
↑ 79↓ 1380.4%
15K· 9.32 mi
8:15/mi
1:15:57
↑ 67↓ 78
20K· 12.43 mi
8:32/mi
1:42:27
↑ 106↓ 860.1%
Half· 13.11 mi
8:21/mi
1:48:09
↑ 19↓ 370.5%
25K· 15.53 mi
8:26/mi
2:08:35
↑ 66↓ 880.2%
30K· 18.64 mi
8:55/mi
2:36:17
↑ 181↓ 1480.2%
20M
8:56/mi
2:48:25
↑ 64↓ 500.2%
21M
9:27/mi
2:57:52
↑ 106↓ 241.6%
35K· 21.75 mi
8:44/mi
3:04:24
↑ 17↓ 861.7%
23M
9:05/mi
3:15:47
↑ 23↓ 630.6%
24M
8:50/mi
3:24:37
↓ 821.3%
40K· 24.85 mi
9:03/mi
3:32:21
↓ 200.3%
25.2M
10:00/mi
3:35:48
↑ 13↓ 160.2%
Finish· 26.22 mi
8:34/mi
3:44:32
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:09
Pace8:15 /mi
2nd Half
Distance13.11 mi
Time1:56:23
Pace8:53 /mi
📊Positive Split: 7.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:5625:238:1025:23
8:10
-
10K
6.21 mi11:40:5250:198:0624:56
8:02
-0:08
15K
9.32 mi12:06:301:15:578:0925:38
8:15
+0:13
20K
12.43 mi12:33:001:42:278:1526:30
8:32
+0:17
Half
13.11 mi12:38:421:48:098:155:42
8:21
-0:11
25K
15.53 mi12:59:082:08:358:1720:26
8:26
+0:05
30K
18.64 mi13:26:502:36:178:2327:42
8:55
+0:29
20M
20.00 mi13:38:582:48:258:2512:08
8:56
+0:01
21M
21.00 mi13:48:252:57:528:289:27
9:27
+0:31
35K
21.75 mi13:54:573:04:248:296:32
8:44
-0:43
23M
23.00 mi14:06:203:15:478:3111:23
9:05
+0:21
24M
24.00 mi14:15:103:24:378:328:50
8:50
-0:15
40K
24.85 mi14:22:543:32:218:337:44
9:03
+0:13
25.2M
25.20 mi14:26:213:35:488:343:27
10:00
+0:57
Finish
26.22 mi14:35:053:44:328:348:44
8:34
-1:26

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

8:02 /mi

Average Pace

8:34 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:05

45% of race

Time at Steady Pace

1:30:26

40% of race

Time at Slower Pace

32:01

14% of race

Average Pace: 8:34 /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 mi11:15:5625:238:1025:23
8:10
#17911
10K
6.21 mi11:40:5250:198:0624:56
8:02
#17242
15K
9.32 mi12:06:301:15:578:0925:38
8:15
#17424
20K
12.43 mi12:33:001:42:278:1526:30
8:32
#17642
Half
13.11 mi12:38:421:48:098:155:42
8:21
#17667
25K
15.53 mi12:59:082:08:358:1720:26
8:26
#17467
30K
18.64 mi13:26:502:36:178:2327:42
8:55
#17367
20M
20.00 mi13:38:582:48:258:2512:08
8:56
#17269
21M
21.00 mi13:48:252:57:528:289:27
9:27
#17159
35K
21.75 mi13:54:573:04:248:296:32
8:44
#17141
23M
23.00 mi14:06:203:15:478:3111:23
9:05
#17095
24M
24.00 mi14:15:103:24:378:328:50
8:50
#17071
40K
24.85 mi14:22:543:32:218:337:44
9:03
#17049
25.2M
25.20 mi14:26:213:35:488:343:27
10:00
#17044
Finish
26.22 mi14:35:053:44:328:348:44
8:34
#17016
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi179116287628717749(Top 62%)6167(Top 50%)6167(Top 988%)
10K6.21 mi3.10 mi17242+6695871+4165871+41616681(Top 59%)5532(Top 45%)5532(Top 887%)
15K9.32 mi3.11 mi17424-1825966-955966-9517749(Top 62%)6167(Top 50%)6167(Top 988%)
20K12.43 mi3.11 mi17642-2186123-1576123-15718442(Top 65%)6592(Top 54%)6592(Top 1056%)
Half13.11 mi0.68 mi17667-256131-86131-818326(Top 65%)6503(Top 53%)6503(Top 1042%)
25K15.53 mi2.42 mi17467+2006040+916040+9116748(Top 59%)5722(Top 47%)5722(Top 917%)
30K18.64 mi3.11 mi17367+1006039+16039+117246(Top 61%)6158(Top 50%)6158(Top 987%)
20M20.00 mi1.36 mi17269+986009+306009+3016428(Top 58%)5841(Top 48%)5841(Top 936%)
21M21.00 mi1.00 mi17159+1105969+405969+4015878(Top 56%)5647(Top 46%)5647(Top 905%)
35K21.75 mi0.75 mi17141+185987-185987-1816917(Top 60%)6287(Top 51%)6287(Top 1008%)
23M23.00 mi1.25 mi17095+465993-65993-616786(Top 59%)6325(Top 52%)6325(Top 1014%)
24M24.00 mi1.00 mi17071+246001-86001-816512(Top 58%)6210(Top 51%)6210(Top 995%)
40K24.85 mi0.85 mi17049+226014-136014-1316593(Top 58%)6363(Top 52%)6363(Top 1020%)
25.2M25.20 mi0.35 mi17044+56029-156029-1517094(Top 60%)6632(Top 54%)6632(Top 1063%)
Finish26.22 mi1.02 mi17016+286029602916696(Top 59%)6401(Top 52%)6401(Top 1026%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

17749

Females

6167

F60-64

6167

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

16681

Females

5532

F60-64

5532

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

17749

Females

6167

F60-64

6167

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

18442

Females

6592

F60-64

6592

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

18326

Females

6503

F60-64

6503

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

16748

Females

5722

F60-64

5722

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

17246

Females

6158

F60-64

6158

30K→20M

18.6 - 20.0 mi

Top 58%
×5story building
+64ft-50ft

Overall

16428

Females

5841

F60-64

5841

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

15878

Females

5647

F60-64

5647

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

16917

Females

6287

F60-64

6287

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

16786

Females

6325

F60-64

6325

23M→24M

23.0 - 24.0 mi

Top 58%
×6story building
+12ft-82ft

Overall

16512

Females

6210

F60-64

6210

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16593

Females

6363

F60-64

6363

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

17094

Females

6632

F60-64

6632

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

16696

Females

6401

F60-64

6401

Passing Analysis

Category:
Athletes Passed
2358
Passed By
1463
Net Change
+895
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17911
5K → 10K74071+669#17911#17242
10K → 15K142324-182#17242#17424
15K → 20K126344-218#17424#17642
20K → Half2651-25#17642#17667
Half → 25K26363+200#17667#17467
25K → 30K264164+100#17467#17367
30K → 20M15355+98#17367#17269
20M → 21M15646+110#17269#17159
21M → 35K7456+18#17159#17141
35K → 23M12781+46#17141#17095
23M → 24M9672+24#17095#17071
24M → 40K7654+22#17071#17049
40K → 25.2M3631+5#17049#17044
25.2M → Finish7951+28#17044#17016
TOTALS23581463+895
📊

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