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BOSTON MARATHON 2025

Silvia Frontini

Bib: 24182•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F55-59)
#0 / 994
Top 49%
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
8:46/mi
27:15
↑ 97↓ 3451.5%
10K· 6.21 mi
8:49/mi
54:37
↑ 79↓ 1380.4%
15K· 9.32 mi
8:55/mi
1:22:19
↑ 67↓ 78
20K· 12.43 mi
9:18/mi
1:51:12
↑ 106↓ 860.1%
Half· 13.11 mi
9:08/mi
1:57:26
↑ 19↓ 370.5%
25K· 15.53 mi
9:01/mi
2:19:17
↑ 66↓ 880.2%
30K· 18.64 mi
9:45/mi
2:49:36
↑ 181↓ 1480.2%
20M
9:26/mi
3:02:25
↑ 64↓ 500.2%
21M
10:42/mi
3:13:07
↑ 106↓ 241.6%
35K· 21.75 mi
9:04/mi
3:19:54
↑ 17↓ 861.7%
23M
9:28/mi
3:31:45
↑ 23↓ 630.6%
24M
9:21/mi
3:41:06
↓ 821.3%
40K· 24.85 mi
9:28/mi
3:49:12
↓ 200.3%
25.2M
10:38/mi
3:52:52
↑ 13↓ 160.2%
Finish· 26.22 mi
9:36/mi
4:02:39
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:26
Pace8:57 /mi
2nd Half
Distance13.11 mi
Time2:05:13
Pace9:33 /mi
📊Positive Split: 6.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:3827:158:4627:15
8:46
-
10K
6.21 mi11:53:0054:378:4727:22
8:49
+0:03
15K
9.32 mi12:20:421:22:198:5027:42
8:55
+0:06
20K
12.43 mi12:49:351:51:128:5728:53
9:18
+0:23
Half
13.11 mi12:55:491:57:268:576:14
9:08
-0:10
25K
15.53 mi13:17:402:19:178:5821:51
9:01
-0:07
30K
18.64 mi13:47:592:49:369:0630:19
9:45
+0:44
20M
20.00 mi14:00:483:02:259:0712:49
9:26
-0:19
21M
21.00 mi14:11:303:13:079:1210:42
10:42
+1:16
35K
21.75 mi14:18:173:19:549:116:47
9:04
-1:38
23M
23.00 mi14:30:083:31:459:1211:51
9:28
+0:24
24M
24.00 mi14:39:293:41:069:139:21
9:21
-0:07
40K
24.85 mi14:47:353:49:129:138:06
9:28
+0:07
25.2M
25.20 mi14:51:153:52:529:143:40
10:38
+1:10
Finish
26.22 mi15:01:024:02:399:169:47
9:36
-1:02

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

8:46 /mi

Average Pace

9:16 /mi

Slowest Pace

10:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:57

46% of race

Time at Steady Pace

1:27:01

36% of race

Time at Slower Pace

44:41

18% of race

Average Pace: 9:15 /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 mi11:25:3827:158:4627:15
8:46
#21365
10K
6.21 mi11:53:0054:378:4727:22
8:49
#21402
15K
9.32 mi12:20:421:22:198:5027:42
8:55
#21449
20K
12.43 mi12:49:351:51:128:5728:53
9:18
#21697
Half
13.11 mi12:55:491:57:268:576:14
9:08
#21731
25K
15.53 mi13:17:402:19:178:5821:51
9:01
#21418
30K
18.64 mi13:47:592:49:369:0630:19
9:45
#21327
20M
20.00 mi14:00:483:02:259:0712:49
9:26
#21120
21M
21.00 mi14:11:303:13:079:1210:42
10:42
#21104
35K
21.75 mi14:18:173:19:549:116:47
9:04
#20995
23M
23.00 mi14:30:083:31:459:1211:51
9:28
#20857
24M
24.00 mi14:39:293:41:069:139:21
9:21
#20784
40K
24.85 mi14:47:353:49:129:138:06
9:28
#20705
25.2M
25.20 mi14:51:153:52:529:143:40
10:38
#20694
Finish
26.22 mi15:01:024:02:399:169:47
9:36
#20733
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi213658277827721653(Top 76%)8355(Top 68%)8355(Top 841%)
10K6.21 mi3.10 mi21402-378272+58272+521445(Top 75%)8275(Top 68%)8275(Top 832%)
15K9.32 mi3.11 mi21449-478278-68278-621653(Top 76%)8355(Top 68%)8355(Top 841%)
20K12.43 mi3.11 mi21697-2488435-1578435-15722266(Top 78%)8731(Top 71%)8731(Top 878%)
Half13.11 mi0.68 mi21731-348454-198454-1922379(Top 79%)8809(Top 72%)8809(Top 886%)
25K15.53 mi2.42 mi21418+3138280+1748280+17419972(Top 70%)7520(Top 61%)7520(Top 757%)
30K18.64 mi3.11 mi21327+918264+168264+1620864(Top 73%)8154(Top 67%)8154(Top 820%)
20M20.00 mi1.36 mi21120+2078175+898175+8918878(Top 66%)7204(Top 59%)7204(Top 725%)
21M21.00 mi1.00 mi21104+168179-48179-420607(Top 73%)8248(Top 67%)8248(Top 830%)
35K21.75 mi0.75 mi20995+1098133+468133+4618614(Top 66%)7268(Top 59%)7268(Top 731%)
23M23.00 mi1.25 mi20857+1388083+508083+5018550(Top 65%)7266(Top 59%)7266(Top 731%)
24M24.00 mi1.00 mi20784+738058+258058+2519055(Top 67%)7575(Top 62%)7575(Top 762%)
40K24.85 mi0.85 mi20705+798031+278031+2718639(Top 66%)7455(Top 61%)7455(Top 750%)
25.2M25.20 mi0.35 mi20694+118031803119539(Top 69%)7926(Top 65%)7926(Top 797%)
Finish26.22 mi1.02 mi20733-398078-478078-4721562(Top 76%)8938(Top 73%)8938(Top 899%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

21653

Females

8355

F55-59

8355

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

21445

Females

8275

F55-59

8275

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

21653

Females

8355

F55-59

8355

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

22266

Females

8731

F55-59

8731

20K→Half

12.4 - 13.1 mi

Top 79%
×2story building
+19ft-37ft

Overall

22379

Females

8809

F55-59

8809

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

19972

Females

7520

F55-59

7520

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

20864

Females

8154

F55-59

8154

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

18878

Females

7204

F55-59

7204

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

20607

Females

8248

F55-59

8248

21M→35K

21.0 - 21.8 mi

Top 66%
×7story building
+17ft-86ft

Overall

18614

Females

7268

F55-59

7268

35K→23M

21.8 - 23.0 mi

Top 65%
×5story building
+23ft-63ft

Overall

18550

Females

7266

F55-59

7266

23M→24M

23.0 - 24.0 mi

Top 67%
×6story building
+12ft-82ft

Overall

19055

Females

7575

F55-59

7575

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18639

Females

7455

F55-59

7455

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19539

Females

7926

F55-59

7926

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

21562

Females

8938

F55-59

8938

Passing Analysis

Category:
Athletes Passed
2038
Passed By
1406
Net Change
+632
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21365
5K → 10K268305-37#21365#21402
10K → 15K191238-47#21402#21449
15K → 20K127375-248#21449#21697
20K → Half2660-34#21697#21731
Half → 25K33017+313#21731#21418
25K → 30K236145+91#21418#21327
30K → 20M22215+207#21327#21120
20M → 21M9680+16#21120#21104
21M → 35K12516+109#21104#20995
35K → 23M16325+138#20995#20857
23M → 24M9623+73#20857#20784
24M → 40K9617+79#20784#20705
40K → 25.2M2918+11#20705#20694
25.2M → Finish3372-39#20694#20733
TOTALS20381406+632
📊

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