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BOSTON MARATHON 2025

Emily Ostler

Bib: 10651•F

BC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 17%
Gender (Female)
#0 / 12228
Top 3%
Division (F18-39)
#0 / 5469
Top 6%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:30
Rank: #7235
Start → 5K
6:55/mi
21:30 split
10K· 6.21 mi
42:50
Rank: #7111 (+124)
5K → 10K
6:52/mi
21:20 split
15K· 9.32 mi
1:04:31
Rank: #7247 (-136)
10K → 15K
6:59/mi
21:41 split
20K· 12.43 mi
1:26:00
Rank: #6988 (+259)
15K → 20K
6:55/mi
21:29 split
Half· 13.11 mi
1:30:28
Rank: #6836 (+152)
20K → Half
6:33/mi
4:28 split
25K· 15.53 mi
1:46:47
Rank: #6373 (+463)
Half → 25K
6:44/mi
16:19 split
30K· 18.64 mi
2:08:07
Rank: #5773 (+600)
25K → 30K
6:52/mi
21:20 split
20M
2:17:28
Rank: #5554 (+219)
30K → 20M
6:53/mi
9:21 split
21M
2:24:44
Rank: #5378 (+176)
20M → 21M
7:16/mi
7:16 split
35K· 21.75 mi
2:29:41
Rank: #5254 (+124)
21M → 35K
6:37/mi
4:57 split
23M
2:38:23
Rank: #5096 (+158)
35K → 23M
6:57/mi
8:42 split
24M
2:45:07
Rank: #4970 (+126)
23M → 24M
6:44/mi
6:44 split
40K· 24.85 mi
2:50:59
Rank: #4870 (+100)
24M → 40K
6:52/mi
5:52 split
25.2M
2:53:33
Rank: #4819 (+51)
40K → 25.2M
7:27/mi
2:34 split
Finish· 26.22 mi
3:00:19
Rank: #4752 (+67)
25.2M → Finish
6:38/mi
6:46 split

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:30:28
Pace6:54 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:29:51
Pace6:51 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:2221:306:5521:30
6:55
-
10K
6.21 mi11:08:4242:506:5421:20
6:52
-0:03
15K
9.32 mi11:30:231:04:316:5521:41
6:59
+0:07
20K
12.43 mi11:51:521:26:006:5521:29
6:55
-0:04
Half
13.11 mi11:56:201:30:286:544:28
6:33
-0:22
25K
15.53 mi12:12:391:46:476:5216:19
6:44
+0:11
30K
18.64 mi12:33:592:08:076:5221:20
6:52
+0:08
20M
20.00 mi12:43:202:17:286:529:21
6:53
+0:01
21M
21.00 mi12:50:362:24:446:547:16
7:16
+0:23
35K
21.75 mi12:55:332:29:416:534:57
6:37
-0:39
23M
23.00 mi13:04:152:38:236:538:42
6:57
+0:20
24M
24.00 mi13:10:592:45:076:536:44
6:44
-0:13
40K
24.85 mi13:16:512:50:596:535:52
6:52
+0:08
25.2M
25.20 mi13:19:252:53:336:532:34
7:27
+0:35
Finish
26.22 mi13:26:113:00:196:536:46
6:38
-0:49

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

6:33 /mi

Average Pace

6:53 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:29

95% of race

Time at Steady Pace

9:50

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:53 /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 mi10:47:2221:306:5521:30
6:55
#7235
10K
6.21 mi11:08:4242:506:5421:20
6:52
#7111
15K
9.32 mi11:30:231:04:316:5521:41
6:59
#7247
20K
12.43 mi11:51:521:26:006:5521:29
6:55
#6988
Half
13.11 mi11:56:201:30:286:544:28
6:33
#6836
25K
15.53 mi12:12:391:46:476:5216:19
6:44
#6373
30K
18.64 mi12:33:592:08:076:5221:20
6:52
#5773
20M
20.00 mi12:43:202:17:286:529:21
6:53
#5554
21M
21.00 mi12:50:362:24:446:547:16
7:16
#5378
35K
21.75 mi12:55:332:29:416:534:57
6:37
#5254
23M
23.00 mi13:04:152:38:236:538:42
6:57
#5096
24M
24.00 mi13:10:592:45:076:536:44
6:44
#4970
40K
24.85 mi13:16:512:50:596:535:52
6:52
#4870
25.2M
25.20 mi13:19:252:53:336:532:34
7:27
#4819
Finish
26.22 mi13:26:113:00:196:536:46
6:38
#4752
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi72357447447491(Top 26%)862(Top 7%)862(Top 16%)
10K6.21 mi3.10 mi7111+124719+25719+257006(Top 25%)708(Top 6%)708(Top 13%)
15K9.32 mi3.11 mi7247-136763-44763-447491(Top 26%)862(Top 7%)862(Top 16%)
20K12.43 mi3.11 mi6988+259706+57706+576318(Top 22%)622(Top 5%)622(Top 11%)
Half13.11 mi0.68 mi6836+152669+37669+374089(Top 14%)245(Top 2%)245(Top 4%)
25K15.53 mi2.42 mi6373+463593+76593+764362(Top 15%)307(Top 3%)307(Top 6%)
30K18.64 mi3.11 mi5773+600505+88505+883877(Top 14%)288(Top 2%)288(Top 5%)
20M20.00 mi1.36 mi5554+219467+38467+383428(Top 12%)253(Top 2%)253(Top 5%)
21M21.00 mi1.00 mi5378+176449+18449+183500(Top 12%)286(Top 2%)286(Top 5%)
35K21.75 mi0.75 mi5254+124432+17432+173094(Top 11%)243(Top 2%)243(Top 4%)
23M23.00 mi1.25 mi5096+158419+13419+133495(Top 12%)314(Top 3%)314(Top 6%)
24M24.00 mi1.00 mi4970+126411+8411+83177(Top 11%)303(Top 2%)303(Top 6%)
40K24.85 mi0.85 mi4870+100399+12399+123201(Top 11%)326(Top 3%)326(Top 6%)
25.2M25.20 mi0.35 mi4819+51396+3396+33226(Top 11%)363(Top 3%)363(Top 7%)
Finish26.22 mi1.02 mi4752+67392+4392+43592(Top 13%)446(Top 4%)446(Top 8%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21story building
+97ft-345ft

Overall

7491

Females

862

F18-39

862

5K→10K

3.1 - 6.2 mi

Top 25%
×5story building
+79ft-138ft

Overall

7006

Females

708

F18-39

708

10K→15K

6.2 - 9.3 mi

Top 26%
×3story building
+67ft-78ft

Overall

7491

Females

862

F18-39

862

15K→20K

9.3 - 12.4 mi

Top 22%
×5story building
+106ft-86ft

Overall

6318

Females

622

F18-39

622

20K→Half

12.4 - 13.1 mi

Top 14%
×2story building
+19ft-37ft

Overall

4089

Females

245

F18-39

245

Half→25K

13.1 - 15.5 mi

Top 15%
×4story building
+66ft-88ft

Overall

4362

Females

307

F18-39

307

25K→30K

15.5 - 18.6 mi

Top 14%
×9story building
+181ft-148ft

Overall

3877

Females

288

F18-39

288

30K→20M

18.6 - 20.0 mi

Top 12%
×5story building
+64ft-50ft

Overall

3428

Females

253

F18-39

253

20M→21M

20.0 - 21.0 mi

Top 12%
×8story building
+106ft-24ft

Overall

3500

Females

286

F18-39

286

21M→35K

21.0 - 21.8 mi

Top 11%
×7story building
+17ft-86ft

Overall

3094

Females

243

F18-39

243

35K→23M

21.8 - 23.0 mi

Top 12%
×5story building
+23ft-63ft

Overall

3495

Females

314

F18-39

314

23M→24M

23.0 - 24.0 mi

Top 11%
×6story building
+12ft-82ft

Overall

3177

Females

303

F18-39

303

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3201

Females

326

F18-39

326

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3226

Females

363

F18-39

363

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2story building
+22ft-21ft

Overall

3592

Females

446

F18-39

446

Passing Analysis

Category:
Athletes Passed
2974
Passed By
491
Net Change
+2483
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7235
5K → 10K276152+124#7235#7111
10K → 15K100236-136#7111#7247
15K → 20K29738+259#7247#6988
20K → Half1520+152#6988#6836
Half → 25K4652+463#6836#6373
25K → 30K6022+600#6373#5773
30K → 20M2234+219#5773#5554
20M → 21M1848+176#5554#5378
21M → 35K1251+124#5378#5254
35K → 23M17012+158#5254#5096
23M → 24M1326+126#5096#4970
24M → 40K11212+100#4970#4870
40K → 25.2M543+51#4870#4819
25.2M → Finish8215+67#4819#4752
TOTALS2974491+2483
📊

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