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BOSTON MARATHON 2025

Isabel Skikos

Bib: 13683•F

AZ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 26%
Gender (Female)
#0 / 12228
Top 9%
Division (F18-39)
#0 / 5469
Top 17%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:11
Rank: #11901
Start → 5K
23:11 | 7:28/mi
10K· 6.21 mi
46:07
Rank: #11433 (+468)
5K → 10K
22:56 | 7:23/mi
15K· 9.32 mi
1:08:40
Rank: #10783 (+650)
10K → 15K
22:33 | 7:15/mi
20K· 12.43 mi
1:31:12
Rank: #10202 (+581)
15K → 20K
22:32 | 7:15/mi
Half· 13.11 mi
1:36:07
Rank: #10150 (+52)
20K → Half
4:55 | 7:12/mi
25K· 15.53 mi
1:53:47
Rank: #9771 (+379)
Half → 25K
17:40 | 7:17/mi
30K· 18.64 mi
2:16:40
Rank: #9118 (+653)
25K → 30K
22:53 | 7:22/mi
20M
2:26:50
Rank: #8882 (+236)
30K → 20M
10:10 | 7:29/mi
21M
2:34:41
Rank: #8691 (+191)
20M → 21M
7:51 | 7:51/mi
35K· 21.75 mi
2:39:40
Rank: #8403 (+288)
21M → 35K
4:59 | 6:40/mi
23M
2:48:30
Rank: #8030 (+373)
35K → 23M
8:50 | 7:03/mi
24M
2:55:30
Rank: #7816 (+214)
23M → 24M
7:00 | 7:00/mi
40K· 24.85 mi
3:01:42
Rank: #7668 (+148)
24M → 40K
6:12 | 7:15/mi
25.2M
3:04:06
Rank: #7512 (+156)
40K → 25.2M
2:24 | 6:59/mi
Finish· 26.22 mi
3:11:13
Rank: #7383 (+129)
25.2M → Finish
7:07 | 6:59/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:36:07
Pace7:20 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:35:06
Pace7:15 /mi
📊Negative Split: 1.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:4523:117:2823:11
7:28
-
10K
6.21 mi11:14:4146:077:2522:56
7:23
-0:05
15K
9.32 mi11:37:141:08:407:2222:33
7:15
-0:08
20K
12.43 mi11:59:461:31:127:2022:32
7:15
0:00
Half
13.11 mi12:04:411:36:077:204:55
7:12
-0:03
25K
15.53 mi12:22:211:53:477:1917:40
7:17
+0:05
30K
18.64 mi12:45:142:16:407:2022:53
7:22
+0:05
20M
20.00 mi12:55:242:26:507:2010:10
7:29
+0:07
21M
21.00 mi13:03:152:34:417:227:51
7:51
+0:22
35K
21.75 mi13:08:142:39:407:214:59
6:40
-1:11
23M
23.00 mi13:17:042:48:307:208:50
7:03
+0:23
24M
24.00 mi13:24:042:55:307:197:00
7:00
-0:03
40K
24.85 mi13:30:163:01:427:196:12
7:15
+0:15
25.2M
25.20 mi13:32:403:04:067:182:24
6:59
-0:16
Finish
26.22 mi13:39:473:11:137:187:07
6:59
0:00

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

7:18 /mi

Slowest Pace

7:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:12

54% of race

Time at Steady Pace

1:27:01

46% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:18 /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 mi10:51:4523:117:2823:11
7:28
#11901
10K
6.21 mi11:14:4146:077:2522:56
7:23
#11433
15K
9.32 mi11:37:141:08:407:2222:33
7:15
#10783
20K
12.43 mi11:59:461:31:127:2022:32
7:15
#10202
Half
13.11 mi12:04:411:36:077:204:55
7:12
#10150
25K
15.53 mi12:22:211:53:477:1917:40
7:17
#9771
30K
18.64 mi12:45:142:16:407:2022:53
7:22
#9118
20M
20.00 mi12:55:242:26:507:2010:10
7:29
#8882
21M
21.00 mi13:03:152:34:417:227:51
7:51
#8691
35K
21.75 mi13:08:142:39:407:214:59
6:40
#8403
23M
23.00 mi13:17:042:48:307:208:50
7:03
#8030
24M
24.00 mi13:24:042:55:307:197:00
7:00
#7816
40K
24.85 mi13:30:163:01:427:196:12
7:15
#7668
25.2M
25.20 mi13:32:403:04:067:182:24
6:59
#7512
Finish
26.22 mi13:39:473:11:137:187:07
6:59
#7383
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi11901273627369632(Top 34%)1713(Top 14%)1713(Top 31%)
10K6.21 mi3.10 mi11433+4682515+2212515+22111019(Top 39%)2306(Top 19%)2306(Top 42%)
15K9.32 mi3.11 mi10783+6502216+2992216+2999632(Top 34%)1713(Top 14%)1713(Top 31%)
20K12.43 mi3.11 mi10202+5811962+2541962+2548654(Top 30%)1372(Top 11%)1372(Top 25%)
Half13.11 mi0.68 mi10150+521936+261936+269161(Top 32%)1546(Top 13%)1546(Top 28%)
25K15.53 mi2.42 mi9771+3791796+1401796+1408267(Top 29%)1316(Top 11%)1316(Top 24%)
30K18.64 mi3.11 mi9118+6531559+2371559+2376854(Top 24%)954(Top 8%)954(Top 17%)
20M20.00 mi1.36 mi8882+2361486+731486+736895(Top 24%)1106(Top 9%)1106(Top 20%)
21M21.00 mi1.00 mi8691+1911448+381448+386522(Top 23%)1113(Top 9%)1113(Top 20%)
35K21.75 mi0.75 mi8403+2881354+941354+943343(Top 12%)290(Top 2%)290(Top 5%)
23M23.00 mi1.25 mi8030+3731253+1011253+1014115(Top 14%)443(Top 4%)443(Top 8%)
24M24.00 mi1.00 mi7816+2141207+461207+464672(Top 16%)633(Top 5%)633(Top 12%)
40K24.85 mi0.85 mi7668+1481188+191188+195413(Top 19%)907(Top 7%)907(Top 17%)
25.2M25.20 mi0.35 mi7512+1561145+431145+431429(Top 5%)118(Top 1.0%)118(Top 2%)
Finish26.22 mi1.02 mi7383+1291126+191126+195579(Top 20%)1107(Top 9%)1107(Top 20%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21stories
+97ft-345ft

Overall

9632

Females

1713

F18-39

1713

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

11019

Females

2306

F18-39

2306

10K→15K

6.2 - 9.3 mi

Top 34%
×3stories
+67ft-78ft

Overall

9632

Females

1713

F18-39

1713

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

8654

Females

1372

F18-39

1372

20K→Half

12.4 - 13.1 mi

Top 32%
×2stories
+19ft-37ft

Overall

9161

Females

1546

F18-39

1546

Half→25K

13.1 - 15.5 mi

Top 29%
×4stories
+66ft-88ft

Overall

8267

Females

1316

F18-39

1316

25K→30K

15.5 - 18.6 mi

Top 24%
×9stories
+181ft-148ft

Overall

6854

Females

954

F18-39

954

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6895

Females

1106

F18-39

1106

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

6522

Females

1113

F18-39

1113

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3343

Females

290

F18-39

290

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

4115

Females

443

F18-39

443

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4672

Females

633

F18-39

633

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5413

Females

907

F18-39

907

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1429

Females

118

F18-39

118

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5579

Females

1107

F18-39

1107

Passing Analysis

Category:
Athletes Passed
4716*
Passed By
198
Net Change
+4518
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11901
5K → 10K56092+468#11901#11433
10K → 15K66414+650#11433#10783
15K → 20K5876+581#10783#10202
20K → Half6210+52#10202#10150
Half → 25K389*10+379#10150#9771
25K → 30K6585+653#9771#9118
30K → 20M24812+236#9118#8882
20M → 21M20716+191#8882#8691
21M → 35K2880+288#8691#8403
35K → 23M3741+373#8403#8030
23M → 24M2173+214#8030#7816
24M → 40K15911+148#7816#7668
40K → 25.2M1560+156#7668#7512
25.2M → Finish14718+129#7512#7383
TOTALS4716*198+4518

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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