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BOSTON MARATHON 2025

Larissa Siedzik

Bib: 29819•F

NH

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
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
10:41/mi
33:13
↑ 97↓ 3451.5%
10K· 6.21 mi
10:58/mi
1:07:18
↑ 79↓ 1380.4%
15K· 9.32 mi
11:46/mi
1:43:51
↑ 67↓ 78
20K· 12.43 mi
12:54/mi
2:23:57
↑ 106↓ 860.1%
Half· 13.11 mi
12:25/mi
2:32:25
↑ 19↓ 370.5%
25K· 15.53 mi
14:41/mi
3:08:00
↑ 66↓ 880.2%
30K· 18.64 mi
13:55/mi
3:51:13
↑ 181↓ 1480.2%
20M
13:19/mi
4:09:19
↑ 64↓ 500.2%
21M
14:28/mi
4:23:47
↑ 106↓ 241.6%
35K· 21.75 mi
12:22/mi
4:33:02
↑ 17↓ 861.7%
23M
13:15/mi
4:49:38
↑ 23↓ 630.6%
24M
12:24/mi
5:02:02
↓ 821.3%
40K· 24.85 mi
12:45/mi
5:12:56
↓ 200.3%
25.2M
13:32/mi
5:17:36
↑ 13↓ 160.2%
Finish· 26.22 mi
11:39/mi
5:29:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:32:25
Pace11:38 /mi
2nd Half
Distance13.11 mi
Time2:57:03
Pace13:30 /mi
📊Positive Split: 16.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:3933:1310:4133:13
10:41
-
10K
6.21 mi12:26:441:07:1810:5034:05
10:58
+0:17
15K
9.32 mi13:03:171:43:5111:0936:33
11:46
+0:48
20K
12.43 mi13:43:232:23:5711:3540:06
12:54
+1:08
Half
13.11 mi13:51:512:32:2511:388:28
12:25
-0:29
25K
15.53 mi14:27:263:08:0012:0635:35
14:41
+2:16
30K
18.64 mi15:10:393:51:1312:2443:13
13:55
-0:46
20M
20.00 mi15:28:454:09:1912:2818:06
13:19
-0:36
21M
21.00 mi15:43:134:23:4712:3414:28
14:28
+1:09
35K
21.75 mi15:52:284:33:0212:339:15
12:22
-2:06
23M
23.00 mi16:09:044:49:3812:3616:36
13:15
+0:53
24M
24.00 mi16:21:285:02:0212:3512:24
12:24
-0:51
40K
24.85 mi16:32:225:12:5612:3510:54
12:45
+0:21
25.2M
25.20 mi16:37:025:17:3612:364:40
13:32
+0:47
Finish
26.22 mi16:48:545:29:2812:3511:52
11:39
-1:53

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

10:41 /mi

Average Pace

12:35 /mi

Slowest Pace

14:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:43

35% of race

Time at Steady Pace

1:37:43

30% of race

Time at Slower Pace

1:56:02

35% of race

Average Pace: 12:34 /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 mi11:52:3933:1310:4133:13
10:41
#27108
10K
6.21 mi12:26:441:07:1810:5034:05
10:58
#27077
15K
9.32 mi13:03:171:43:5111:0936:33
11:46
#27246
20K
12.43 mi13:43:232:23:5711:3540:06
12:54
#27457
Half
13.11 mi13:51:512:32:2511:388:28
12:25
#27490
25K
15.53 mi14:27:263:08:0012:0635:35
14:41
#27678
30K
18.64 mi15:10:393:51:1312:2443:13
13:55
#27646
20M
20.00 mi15:28:454:09:1912:2818:06
13:19
#27583
21M
21.00 mi15:43:134:23:4712:3414:28
14:28
#27559
35K
21.75 mi15:52:284:33:0212:339:15
12:22
#27535
23M
23.00 mi16:09:044:49:3812:3616:36
13:15
#27513
24M
24.00 mi16:21:285:02:0212:3512:24
12:24
#27485
40K
24.85 mi16:32:225:12:5612:3510:54
12:45
#27446
25.2M
25.20 mi16:37:025:17:3612:364:40
13:32
#27432
Finish
26.22 mi16:48:545:29:2812:3511:52
11:39
#27408
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi27108113911139127456(Top 97%)11655(Top 95%)11655(Top 1173%)
10K6.21 mi3.10 mi27077+3111397-611397-627030(Top 95%)11389(Top 93%)11389(Top 1146%)
15K9.32 mi3.11 mi27246-16911497-10011497-10027456(Top 97%)11655(Top 95%)11655(Top 1173%)
20K12.43 mi3.11 mi27457-21111634-13711634-13727772(Top 98%)11856(Top 97%)11856(Top 1193%)
Half13.11 mi0.68 mi27490-3311655-2111655-2127711(Top 98%)11829(Top 97%)11829(Top 1190%)
25K15.53 mi2.42 mi27678-18811787-13211787-13228153(Top 99%)12102(Top 99%)12102(Top 1218%)
30K18.64 mi3.11 mi27646+3211775+1211775+1227441(Top 97%)11742(Top 96%)11742(Top 1181%)
20M20.00 mi1.36 mi27583+6311759+1611759+1626739(Top 94%)11423(Top 93%)11423(Top 1149%)
21M21.00 mi1.00 mi27559+2411750+911750+926675(Top 94%)11410(Top 93%)11410(Top 1148%)
35K21.75 mi0.75 mi27535+2411741+911741+926307(Top 93%)11246(Top 92%)11246(Top 1131%)
23M23.00 mi1.25 mi27513+2211728+1311728+1326677(Top 94%)11443(Top 94%)11443(Top 1151%)
24M24.00 mi1.00 mi27485+2811716+1211716+1226190(Top 92%)11219(Top 92%)11219(Top 1129%)
40K24.85 mi0.85 mi27446+3911695+2111695+2125992(Top 92%)11145(Top 91%)11145(Top 1121%)
25.2M25.20 mi0.35 mi27432+1411689+611689+625693(Top 90%)11046(Top 90%)11046(Top 1111%)
Finish26.22 mi1.02 mi27408+2411676+1311676+1326342(Top 93%)11318(Top 93%)11318(Top 1139%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21story building
+97ft-345ft

Overall

27456

Females

11655

F55-59

11655

5K→10K

3.1 - 6.2 mi

Top 95%
×5story building
+79ft-138ft

Overall

27030

Females

11389

F55-59

11389

10K→15K

6.2 - 9.3 mi

Top 97%
×3story building
+67ft-78ft

Overall

27456

Females

11655

F55-59

11655

15K→20K

9.3 - 12.4 mi

Top 98%
×5story building
+106ft-86ft

Overall

27772

Females

11856

F55-59

11856

20K→Half

12.4 - 13.1 mi

Top 98%
×2story building
+19ft-37ft

Overall

27711

Females

11829

F55-59

11829

Half→25K

13.1 - 15.5 mi

Top 99%
×4story building
+66ft-88ft

Overall

28153

Females

12102

F55-59

12102

25K→30K

15.5 - 18.6 mi

Top 97%
×9story building
+181ft-148ft

Overall

27441

Females

11742

F55-59

11742

30K→20M

18.6 - 20.0 mi

Top 94%
×5story building
+64ft-50ft

Overall

26739

Females

11423

F55-59

11423

20M→21M

20.0 - 21.0 mi

Top 94%
×8story building
+106ft-24ft

Overall

26675

Females

11410

F55-59

11410

21M→35K

21.0 - 21.8 mi

Top 93%
×7story building
+17ft-86ft

Overall

26307

Females

11246

F55-59

11246

35K→23M

21.8 - 23.0 mi

Top 94%
×5story building
+23ft-63ft

Overall

26677

Females

11443

F55-59

11443

23M→24M

23.0 - 24.0 mi

Top 92%
×6story building
+12ft-82ft

Overall

26190

Females

11219

F55-59

11219

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

25992

Females

11145

F55-59

11145

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

25693

Females

11046

F55-59

11046

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2story building
+22ft-21ft

Overall

26342

Females

11318

F55-59

11318

Passing Analysis

Category:
Athletes Passed
633
Passed By
933
Net Change
-300
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27108
5K → 10K164133+31#27108#27077
10K → 15K53222-169#27077#27246
15K → 20K24235-211#27246#27457
20K → Half841-33#27457#27490
Half → 25K16204-188#27490#27678
25K → 30K7038+32#27678#27646
30K → 20M718+63#27646#27583
20M → 21M3410+24#27583#27559
21M → 35K339+24#27559#27535
35K → 23M3614+22#27535#27513
23M → 24M302+28#27513#27485
24M → 40K467+39#27485#27446
40K → 25.2M162+14#27446#27432
25.2M → Finish328+24#27432#27408
TOTALS633933-300
📊

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