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BOSTON MARATHON 2025

Yoon Hae Ahn

Bib: 14552•F

0:00
0:00
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Overall
#0 / 28404
Top 36%
Gender (Female)
#0 / 12228
Top 19%
Division (F18-39)
#0 / 5469
Top 34%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:41
Rank: #13322
Start → 5K
23:41 | 7:37/mi
10K· 6.21 mi
47:12
Rank: #13003 (+319)
5K → 10K
23:31 | 7:34/mi
15K· 9.32 mi
1:10:29
Rank: #12524 (+479)
10K → 15K
23:17 | 7:30/mi
20K· 12.43 mi
1:33:50
Rank: #12093 (+431)
15K → 20K
23:21 | 7:31/mi
Half· 13.11 mi
1:38:56
Rank: #12055 (+38)
20K → Half
5:06 | 7:29/mi
25K· 15.53 mi
1:57:17
Rank: #11756 (+299)
Half → 25K
18:21 | 7:34/mi
30K· 18.64 mi
2:21:24
Rank: #11319 (+437)
25K → 30K
24:07 | 7:46/mi
20M
2:31:55
Rank: #11055 (+264)
30K → 20M
10:31 | 7:44/mi
21M
2:40:05
Rank: #10866 (+189)
20M → 21M
8:10 | 8:10/mi
35K· 21.75 mi
2:45:52
Rank: #10821 (+45)
21M → 35K
5:47 | 7:44/mi
23M
2:55:36
Rank: #10630 (+191)
35K → 23M
9:44 | 7:46/mi
24M
3:03:14
Rank: #10506 (+124)
23M → 24M
7:38 | 7:38/mi
40K· 24.85 mi
3:09:49
Rank: #10380 (+126)
24M → 40K
6:35 | 7:42/mi
25.2M
3:12:44
Rank: #10333 (+47)
40K → 25.2M
2:55 | 8:27/mi
Finish· 26.22 mi
3:20:23
Rank: #10260 (+73)
25.2M → Finish
7:39 | 7:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:56
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:41:27
Pace7:44 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:5423:417:3723:41
7:37
-
10K
6.21 mi11:17:2547:127:3623:31
7:34
-0:03
15K
9.32 mi11:40:421:10:297:3423:17
7:30
-0:04
20K
12.43 mi12:04:031:33:507:3323:21
7:31
+0:01
Half
13.11 mi12:09:091:38:567:335:06
7:29
-0:02
25K
15.53 mi12:27:301:57:177:3318:21
7:34
+0:05
30K
18.64 mi12:51:372:21:247:3524:07
7:46
+0:12
20M
20.00 mi13:02:082:31:557:3610:31
7:44
-0:02
21M
21.00 mi13:10:182:40:057:378:10
8:10
+0:26
35K
21.75 mi13:16:052:45:527:385:47
7:44
-0:26
23M
23.00 mi13:25:492:55:367:389:44
7:46
+0:02
24M
24.00 mi13:33:273:03:147:387:38
7:38
-0:08
40K
24.85 mi13:40:023:09:497:386:35
7:42
+0:04
25.2M
25.20 mi13:42:573:12:447:392:55
8:27
+0:45
Finish
26.22 mi13:50:363:20:237:397:39
7:30
-0:57

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

7:29 /mi

Average Pace

7:39 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:17:28

99% of race

Time at Steady Pace

2:55

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:39 /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 mi10:53:5423:417:3723:41
7:37
#13322
10K
6.21 mi11:17:2547:127:3623:31
7:34
#13003
15K
9.32 mi11:40:421:10:297:3423:17
7:30
#12524
20K
12.43 mi12:04:031:33:507:3323:21
7:31
#12093
Half
13.11 mi12:09:091:38:567:335:06
7:29
#12055
25K
15.53 mi12:27:301:57:177:3318:21
7:34
#11756
30K
18.64 mi12:51:372:21:247:3524:07
7:46
#11319
20M
20.00 mi13:02:082:31:557:3610:31
7:44
#11055
21M
21.00 mi13:10:182:40:057:378:10
8:10
#10866
35K
21.75 mi13:16:052:45:527:385:47
7:44
#10821
23M
23.00 mi13:25:492:55:367:389:44
7:46
#10630
24M
24.00 mi13:33:273:03:147:387:38
7:38
#10506
40K
24.85 mi13:40:023:09:497:386:35
7:42
#10380
25.2M
25.20 mi13:42:573:12:447:392:55
8:27
#10333
Finish
26.22 mi13:50:363:20:237:397:39
7:30
#10260
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi133223500350011731(Top 41%)2752(Top 23%)2752(Top 50%)
10K6.21 mi3.10 mi13003+3193336+1643336+16412749(Top 45%)3221(Top 26%)3221(Top 59%)
15K9.32 mi3.11 mi12524+4793115+2213115+22111731(Top 41%)2752(Top 23%)2752(Top 50%)
20K12.43 mi3.11 mi12093+4312921+1942921+19410906(Top 38%)2425(Top 20%)2425(Top 44%)
Half13.11 mi0.68 mi12055+382906+152906+1511529(Top 41%)2688(Top 22%)2688(Top 49%)
25K15.53 mi2.42 mi11756+2992788+1182788+11810511(Top 37%)2328(Top 19%)2328(Top 43%)
30K18.64 mi3.11 mi11319+4372636+1522636+1529650(Top 34%)2124(Top 17%)2124(Top 39%)
20M20.00 mi1.36 mi11055+2642530+1062530+1068664(Top 31%)1827(Top 15%)1827(Top 33%)
21M21.00 mi1.00 mi10866+1892483+472483+478408(Top 30%)1904(Top 16%)1904(Top 35%)
35K21.75 mi0.75 mi10821+452485-22485-210330(Top 36%)2755(Top 23%)2755(Top 50%)
23M23.00 mi1.25 mi10630+1912415+702415+708434(Top 30%)2012(Top 16%)2012(Top 37%)
24M24.00 mi1.00 mi10506+1242386+292386+298686(Top 31%)2181(Top 18%)2181(Top 40%)
40K24.85 mi0.85 mi10380+1262361+252361+258123(Top 29%)2050(Top 17%)2050(Top 37%)
25.2M25.20 mi0.35 mi10333+472358+32358+38627(Top 30%)2340(Top 19%)2340(Top 43%)
Finish26.22 mi1.02 mi10260+732356+22356+29259(Top 33%)2646(Top 22%)2646(Top 48%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

11731

Females

2752

F18-39

2752

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

12749

Females

3221

F18-39

3221

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

11731

Females

2752

F18-39

2752

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10906

Females

2425

F18-39

2425

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

11529

Females

2688

F18-39

2688

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

10511

Females

2328

F18-39

2328

25K→30K

15.5 - 18.6 mi

Top 34%
×9stories
+181ft-148ft

Overall

9650

Females

2124

F18-39

2124

30K→20M

18.6 - 20.0 mi

Top 31%
×5stories
+64ft-50ft

Overall

8664

Females

1827

F18-39

1827

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

8408

Females

1904

F18-39

1904

21M→35K

21.0 - 21.8 mi

Top 36%
×7stories
+17ft-86ft

Overall

10330

Females

2755

F18-39

2755

35K→23M

21.8 - 23.0 mi

Top 30%
×5stories
+23ft-63ft

Overall

8434

Females

2012

F18-39

2012

23M→24M

23.0 - 24.0 mi

Top 31%
×6stories
+12ft-82ft

Overall

8686

Females

2181

F18-39

2181

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8123

Females

2050

F18-39

2050

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

8627

Females

2340

F18-39

2340

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

9259

Females

2646

F18-39

2646

Passing Analysis

Category:
Athletes Passed
3530
Passed By
468
Net Change
+3062
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13322
5K → 10K462143+319#13322#13003
10K → 15K51940+479#13003#12524
15K → 20K45322+431#12524#12093
20K → Half5214+38#12093#12055
Half → 25K33334+299#12055#11756
25K → 30K47841+437#11756#11319
30K → 20M27410+264#11319#11055
20M → 21M21223+189#11055#10866
21M → 35K7732+45#10866#10821
35K → 23M21019+191#10821#10630
23M → 24M14420+124#10630#10506
24M → 40K14620+126#10506#10380
40K → 25.2M5811+47#10380#10333
25.2M → Finish11239+73#10333#10260
TOTALS3530468+3062
📊

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