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BOSTON MARATHON 2025

Rachel Kalaouzis

Bib: 14522•F

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Overall
#0 / 28404
Top 37%
Gender (Female)
#0 / 12228
Top 20%
Division (F18-39)
#0 / 5469
Top 35%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:11
Rank: #14664
Start → 5K
24:11 | 7:47/mi
10K· 6.21 mi
48:23
Rank: #14651 (+13)
5K → 10K
24:12 | 7:47/mi
15K· 9.32 mi
1:12:25
Rank: #14365 (+286)
10K → 15K
24:02 | 7:44/mi
20K· 12.43 mi
1:36:44
Rank: #14113 (+252)
15K → 20K
24:19 | 7:50/mi
Half· 13.11 mi
1:42:03
Rank: #14116 (-3)
20K → Half
5:19 | 7:48/mi
25K· 15.53 mi
2:00:58
Rank: #13780 (+336)
Half → 25K
18:55 | 7:48/mi
30K· 18.64 mi
2:25:18
Rank: #13036 (+744)
25K → 30K
24:20 | 7:50/mi
20M
2:35:28
Rank: #12502 (+534)
30K → 20M
10:10 | 7:29/mi
21M
2:43:14
Rank: #12085 (+417)
20M → 21M
7:46 | 7:46/mi
35K· 21.75 mi
2:48:49
Rank: #11915 (+170)
21M → 35K
5:35 | 7:28/mi
23M
2:58:07
Rank: #11502 (+413)
35K → 23M
9:18 | 7:26/mi
24M
3:05:24
Rank: #11202 (+300)
23M → 24M
7:17 | 7:17/mi
40K· 24.85 mi
3:11:35
Rank: #10920 (+282)
24M → 40K
6:11 | 7:14/mi
25.2M
3:14:13
Rank: #10790 (+130)
40K → 25.2M
2:38 | 7:38/mi
Finish· 26.22 mi
3:21:01
Rank: #10439 (+351)
25.2M → Finish
6:48 | 6:40/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:42:03
Pace7:47 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:38:58
Pace7:33 /mi
📊Negative Split: 3.0% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:1824:117:4724:11
7:47
-
10K
6.21 mi11:19:3048:237:4724:12
7:47
0:00
15K
9.32 mi11:43:321:12:257:4624:02
7:44
-0:03
20K
12.43 mi12:07:511:36:447:4724:19
7:50
+0:06
Half
13.11 mi12:13:101:42:037:475:19
7:48
-0:02
25K
15.53 mi12:32:052:00:587:4718:55
7:48
0:00
30K
18.64 mi12:56:252:25:187:4824:20
7:50
+0:02
20M
20.00 mi13:06:352:35:287:4610:10
7:29
-0:21
21M
21.00 mi13:14:212:43:147:467:46
7:46
+0:17
35K
21.75 mi13:19:562:48:497:465:35
7:28
-0:18
23M
23.00 mi13:29:142:58:077:459:18
7:26
-0:02
24M
24.00 mi13:36:313:05:247:447:17
7:17
-0:09
40K
24.85 mi13:42:423:11:357:426:11
7:14
-0:03
25.2M
25.20 mi13:45:203:14:137:422:38
7:38
+0:24
Finish
26.22 mi13:52:083:21:017:406:48
6:40
-0:58

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

6:40 /mi

Average Pace

7:40 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

20:16

10% of race

Time at Steady Pace

3:00:45

90% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:40 /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 mi10:55:1824:117:4724:11
7:47
#14664
10K
6.21 mi11:19:3048:237:4724:12
7:47
#14651
15K
9.32 mi11:43:321:12:257:4624:02
7:44
#14365
20K
12.43 mi12:07:511:36:447:4724:19
7:50
#14113
Half
13.11 mi12:13:101:42:037:475:19
7:48
#14116
25K
15.53 mi12:32:052:00:587:4718:55
7:48
#13780
30K
18.64 mi12:56:252:25:187:4824:20
7:50
#13036
20M
20.00 mi13:06:352:35:287:4610:10
7:29
#12502
21M
21.00 mi13:14:212:43:147:467:46
7:46
#12085
35K
21.75 mi13:19:562:48:497:465:35
7:28
#11915
23M
23.00 mi13:29:142:58:077:459:18
7:26
#11502
24M
24.00 mi13:36:313:05:247:447:17
7:17
#11202
40K
24.85 mi13:42:423:11:357:426:11
7:14
#10920
25.2M
25.20 mi13:45:203:14:137:422:38
7:38
#10790
Finish
26.22 mi13:52:083:21:017:406:48
6:40
#10439
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi146644320432013821(Top 49%)3907(Top 32%)3907(Top 71%)
10K6.21 mi3.10 mi14651+134333-134333-1314703(Top 52%)4360(Top 36%)4360(Top 80%)
15K9.32 mi3.11 mi14365+2864178+1554178+15513821(Top 49%)3907(Top 32%)3907(Top 71%)
20K12.43 mi3.11 mi14113+2524069+1094069+10913491(Top 47%)3807(Top 31%)3807(Top 70%)
Half13.11 mi0.68 mi14116-34069406914198(Top 50%)4149(Top 34%)4149(Top 76%)
25K15.53 mi2.42 mi13780+3363916+1533916+15312371(Top 44%)3311(Top 27%)3311(Top 61%)
30K18.64 mi3.11 mi13036+7443574+3423574+34210175(Top 36%)2367(Top 19%)2367(Top 43%)
20M20.00 mi1.36 mi12502+5343309+2653309+2656919(Top 24%)1130(Top 9%)1130(Top 21%)
21M21.00 mi1.00 mi12085+4173117+1923117+1926046(Top 21%)954(Top 8%)954(Top 17%)
35K21.75 mi0.75 mi11915+1703049+683049+688429(Top 30%)1870(Top 15%)1870(Top 34%)
23M23.00 mi1.25 mi11502+4132884+1652884+1656242(Top 22%)1121(Top 9%)1121(Top 20%)
24M24.00 mi1.00 mi11202+3002763+1212763+1216368(Top 22%)1226(Top 10%)1226(Top 22%)
40K24.85 mi0.85 mi10920+2822651+1122651+1125282(Top 19%)881(Top 7%)881(Top 16%)
25.2M25.20 mi0.35 mi10790+1302592+592592+594144(Top 15%)622(Top 5%)622(Top 11%)
Finish26.22 mi1.02 mi10439+3512438+1542438+1543762(Top 13%)496(Top 4%)496(Top 9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21stories
+97ft-345ft

Overall

13821

Females

3907

F18-39

3907

5K→10K

3.1 - 6.2 mi

Top 52%
×5stories
+79ft-138ft

Overall

14703

Females

4360

F18-39

4360

10K→15K

6.2 - 9.3 mi

Top 49%
×3stories
+67ft-78ft

Overall

13821

Females

3907

F18-39

3907

15K→20K

9.3 - 12.4 mi

Top 47%
×5stories
+106ft-86ft

Overall

13491

Females

3807

F18-39

3807

20K→Half

12.4 - 13.1 mi

Top 50%
×2stories
+19ft-37ft

Overall

14198

Females

4149

F18-39

4149

Half→25K

13.1 - 15.5 mi

Top 44%
×4stories
+66ft-88ft

Overall

12371

Females

3311

F18-39

3311

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

10175

Females

2367

F18-39

2367

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6919

Females

1130

F18-39

1130

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

6046

Females

954

F18-39

954

21M→35K

21.0 - 21.8 mi

Top 30%
×7stories
+17ft-86ft

Overall

8429

Females

1870

F18-39

1870

35K→23M

21.8 - 23.0 mi

Top 22%
×5stories
+23ft-63ft

Overall

6242

Females

1121

F18-39

1121

23M→24M

23.0 - 24.0 mi

Top 22%
×6stories
+12ft-82ft

Overall

6368

Females

1226

F18-39

1226

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5282

Females

881

F18-39

881

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

4144

Females

622

F18-39

622

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2stories
+22ft-21ft

Overall

3762

Females

496

F18-39

496

Passing Analysis

Category:
Athletes Passed
4760
Passed By
535
Net Change
+4225
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14664
5K → 10K303290+13#14664#14651
10K → 15K35771+286#14651#14365
15K → 20K33886+252#14365#14113
20K → Half3235-3#14113#14116
Half → 25K36731+336#14116#13780
25K → 30K75511+744#13780#13036
30K → 20M5351+534#13036#12502
20M → 21M4181+417#12502#12085
21M → 35K1711+170#12085#11915
35K → 23M4141+413#11915#11502
23M → 24M3044+300#11502#11202
24M → 40K2842+282#11202#10920
40K → 25.2M1300+130#10920#10790
25.2M → Finish3521+351#10790#10439
TOTALS4760535+4225
📊

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