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BOSTON MARATHON 2025

Liz Chamiec-Case

Bib: 17150•F

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 37%
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:13
Rank: #14776
Start → 5K
24:13 | 7:48/mi
10K· 6.21 mi
48:25
Rank: #14725 (+51)
5K → 10K
24:12 | 7:47/mi
15K· 9.32 mi
1:12:46
Rank: #14680 (+45)
10K → 15K
24:21 | 7:50/mi
20K· 12.43 mi
1:37:42
Rank: #14773 (-93)
15K → 20K
24:56 | 8:02/mi
Half· 13.11 mi
1:43:09
Rank: #14819 (-46)
20K → Half
5:27 | 7:59/mi
25K· 15.53 mi
2:04:03
Rank: #15434 (-615)
Half → 25K
20:54 | 8:37/mi
30K· 18.64 mi
2:30:01
Rank: #15123 (+311)
25K → 30K
25:58 | 8:21/mi
20M
2:41:34
Rank: #14971 (+152)
30K → 20M
11:33 | 8:30/mi
21M
2:50:28
Rank: #14795 (+176)
20M → 21M
8:54 | 8:54/mi
35K· 21.75 mi
2:56:42
Rank: #14748 (+47)
21M → 35K
6:14 | 8:20/mi
23M
3:07:32
Rank: #14692 (+56)
35K → 23M
10:50 | 8:39/mi
24M
3:15:57
Rank: #14650 (+42)
23M → 24M
8:25 | 8:25/mi
40K· 24.85 mi
3:23:34
Rank: #14668 (-18)
24M → 40K
7:37 | 8:54/mi
25.2M
3:26:42
Rank: #14612 (+56)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:34:38
Rank: #14470 (+142)
25.2M → Finish
7:56 | 7:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:09
Pace7:52 /mi
2nd Half
Distance13.11 mi
Time1:51:29
Pace8:30 /mi
📊Positive Split: 8.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:2524:137:4824:13
7:48
-
10K
6.21 mi11:38:3748:257:4824:12
7:47
-0:01
15K
9.32 mi12:02:581:12:467:4824:21
7:50
+0:03
20K
12.43 mi12:27:541:37:427:5224:56
8:02
+0:12
Half
13.11 mi12:33:211:43:097:525:27
7:59
-0:03
25K
15.53 mi12:54:152:04:037:5920:54
8:37
+0:38
30K
18.64 mi13:20:132:30:018:0325:58
8:21
-0:16
20M
20.00 mi13:31:462:41:348:0511:33
8:30
+0:09
21M
21.00 mi13:40:402:50:288:078:54
8:54
+0:24
35K
21.75 mi13:46:542:56:428:076:14
8:20
-0:34
23M
23.00 mi13:57:443:07:328:0910:50
8:39
+0:19
24M
24.00 mi14:06:093:15:578:108:25
8:25
-0:14
40K
24.85 mi14:13:463:23:348:117:37
8:54
+0:29
25.2M
25.20 mi14:16:543:26:428:123:08
9:05
+0:11
Finish
26.22 mi14:24:503:34:388:127:56
7:47
-1:18

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

7:47 /mi

Average Pace

8:12 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:15

76% of race

Time at Steady Pace

51:23

24% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:11 /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 mi11:14:2524:137:4824:13
7:48
#14776
10K
6.21 mi11:38:3748:257:4824:12
7:47
#14725
15K
9.32 mi12:02:581:12:467:4824:21
7:50
#14680
20K
12.43 mi12:27:541:37:427:5224:56
8:02
#14773
Half
13.11 mi12:33:211:43:097:525:27
7:59
#14819
25K
15.53 mi12:54:152:04:037:5920:54
8:37
#15434
30K
18.64 mi13:20:132:30:018:0325:58
8:21
#15123
20M
20.00 mi13:31:462:41:348:0511:33
8:30
#14971
21M
21.00 mi13:40:402:50:288:078:54
8:54
#14795
35K
21.75 mi13:46:542:56:428:076:14
8:20
#14748
23M
23.00 mi13:57:443:07:328:0910:50
8:39
#14692
24M
24.00 mi14:06:093:15:578:108:25
8:25
#14650
40K
24.85 mi14:13:463:23:348:117:37
8:54
#14668
25.2M
25.20 mi14:16:543:26:428:123:08
9:05
#14612
Finish
26.22 mi14:24:503:34:388:127:56
7:47
#14470
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi147764397439714710(Top 52%)4424(Top 36%)4424(Top 81%)
10K6.21 mi3.10 mi14725+514382+154382+1514721(Top 52%)4378(Top 36%)4378(Top 80%)
15K9.32 mi3.11 mi14680+454362+204362+2014710(Top 52%)4424(Top 36%)4424(Top 81%)
20K12.43 mi3.11 mi14773-934458-964458-9615128(Top 53%)4709(Top 39%)4709(Top 86%)
Half13.11 mi0.68 mi14819-464485-274485-2715828(Top 56%)5063(Top 41%)5063(Top 93%)
25K15.53 mi2.42 mi15434-6154854-3694854-36917924(Top 63%)6382(Top 52%)6382(Top 117%)
30K18.64 mi3.11 mi15123+3114735+1194735+11913889(Top 49%)4305(Top 35%)4305(Top 79%)
20M20.00 mi1.36 mi14971+1524681+544681+5413810(Top 49%)4418(Top 36%)4418(Top 81%)
21M21.00 mi1.00 mi14795+1764606+754606+7512954(Top 46%)4097(Top 34%)4097(Top 75%)
35K21.75 mi0.75 mi14748+474596+104596+1014500(Top 51%)4954(Top 41%)4954(Top 91%)
23M23.00 mi1.25 mi14692+564597-14597-114271(Top 50%)4943(Top 40%)4943(Top 90%)
24M24.00 mi1.00 mi14650+424600-34600-314012(Top 49%)4831(Top 40%)4831(Top 88%)
40K24.85 mi0.85 mi14668-184639-394639-3915810(Top 56%)5939(Top 49%)5939(Top 109%)
25.2M25.20 mi0.35 mi14612+564622+174622+1712370(Top 44%)4169(Top 34%)4169(Top 76%)
Finish26.22 mi1.02 mi14470+1424574+484574+4811370(Top 40%)3656(Top 30%)3656(Top 67%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21stories
+97ft-345ft

Overall

14710

Females

4424

F18-39

4424

5K→10K

3.1 - 6.2 mi

Top 52%
×5stories
+79ft-138ft

Overall

14721

Females

4378

F18-39

4378

10K→15K

6.2 - 9.3 mi

Top 52%
×3stories
+67ft-78ft

Overall

14710

Females

4424

F18-39

4424

15K→20K

9.3 - 12.4 mi

Top 53%
×5stories
+106ft-86ft

Overall

15128

Females

4709

F18-39

4709

20K→Half

12.4 - 13.1 mi

Top 56%
×2stories
+19ft-37ft

Overall

15828

Females

5063

F18-39

5063

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

17924

Females

6382

F18-39

6382

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13889

Females

4305

F18-39

4305

30K→20M

18.6 - 20.0 mi

Top 49%
×5stories
+64ft-50ft

Overall

13810

Females

4418

F18-39

4418

20M→21M

20.0 - 21.0 mi

Top 46%
×8stories
+106ft-24ft

Overall

12954

Females

4097

F18-39

4097

21M→35K

21.0 - 21.8 mi

Top 51%
×7stories
+17ft-86ft

Overall

14500

Females

4954

F18-39

4954

35K→23M

21.8 - 23.0 mi

Top 50%
×5stories
+23ft-63ft

Overall

14271

Females

4943

F18-39

4943

23M→24M

23.0 - 24.0 mi

Top 49%
×6stories
+12ft-82ft

Overall

14012

Females

4831

F18-39

4831

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

15810

Females

5939

F18-39

5939

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

12370

Females

4169

F18-39

4169

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2stories
+22ft-21ft

Overall

11370

Females

3656

F18-39

3656

Passing Analysis

Category:
Athletes Passed
2202
Passed By
1896
Net Change
+306
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14776
5K → 10K317266+51#14776#14725
10K → 15K217172+45#14725#14680
15K → 20K186279-93#14680#14773
20K → Half2066-46#14773#14819
Half → 25K62677-615#14819#15434
25K → 30K39382+311#15434#15123
30K → 20M20856+152#15123#14971
20M → 21M20024+176#14971#14795
21M → 35K8538+47#14795#14748
35K → 23M12872+56#14748#14692
23M → 24M9351+42#14692#14650
24M → 40K6684-18#14650#14668
40K → 25.2M659+56#14668#14612
25.2M → Finish16220+142#14612#14470
TOTALS22021896+306
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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