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BOSTON MARATHON 2025

Kelsa Ader

Bib: 15930•F

KY

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 35%
Gender (Female)
#0 / 12228
Top 18%
Division (F18-39)
#0 / 5469
Top 32%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:42/mi
20:50
↑ 97↓ 3451.5%
10K· 6.21 mi
6:55/mi
42:18
↑ 79↓ 1380.4%
15K· 9.32 mi
7:09/mi
1:04:31
↑ 67↓ 78
20K· 12.43 mi
7:27/mi
1:27:41
↑ 106↓ 860.1%
Half· 13.11 mi
7:18/mi
1:32:40
↑ 19↓ 370.5%
25K· 15.53 mi
7:39/mi
1:51:12
↑ 66↓ 880.2%
30K· 18.64 mi
8:02/mi
2:16:08
↑ 181↓ 1480.2%
20M
8:19/mi
2:27:26
↑ 64↓ 500.2%
21M
8:59/mi
2:36:25
↑ 106↓ 241.6%
35K· 21.75 mi
8:07/mi
2:42:29
↑ 17↓ 861.7%
23M
8:29/mi
2:53:06
↑ 23↓ 630.6%
24M
7:56/mi
3:01:02
↓ 821.3%
40K· 24.85 mi
8:42/mi
3:08:28
↓ 200.3%
25.2M
8:33/mi
3:11:25
↑ 13↓ 160.2%
Finish· 26.22 mi
7:49/mi
3:19:23
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:40
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:46:43
Pace8:08 /mi
📊Positive Split: 15.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4520:506:4220:50
6:42
-
10K
6.21 mi11:14:1342:186:4821:28
6:55
+0:13
15K
9.32 mi11:36:261:04:316:5522:13
7:09
+0:14
20K
12.43 mi11:59:361:27:417:0323:10
7:27
+0:18
Half
13.11 mi12:04:351:32:407:044:59
7:18
-0:09
25K
15.53 mi12:23:071:51:127:1018:32
7:39
+0:21
30K
18.64 mi12:48:032:16:087:1824:56
8:02
+0:23
20M
20.00 mi12:59:212:27:267:2211:18
8:19
+0:17
21M
21.00 mi13:08:202:36:257:278:59
8:59
+0:40
35K
21.75 mi13:14:242:42:297:286:04
8:07
-0:52
23M
23.00 mi13:25:012:53:067:3210:37
8:29
+0:22
24M
24.00 mi13:32:573:01:027:337:56
7:56
-0:33
40K
24.85 mi13:40:233:08:287:357:26
8:42
+0:46
25.2M
25.20 mi13:43:203:11:257:362:57
8:33
-0:09
Finish
26.22 mi13:51:183:19:237:377:58
7:49
-0:44

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

6:42 /mi

Average Pace

7:37 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:40

46% of race

Time at Steady Pace

1:05:26

33% of race

Time at Slower Pace

41:17

21% of race

Average Pace: 7:36 /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 mi10:52:4520:506:4220:50
6:42
#5518
10K
6.21 mi11:14:1342:186:4821:28
6:55
#6396
15K
9.32 mi11:36:261:04:316:5522:13
7:09
#7254
20K
12.43 mi11:59:361:27:417:0323:10
7:27
#7872
Half
13.11 mi12:04:351:32:407:044:59
7:18
#7949
25K
15.53 mi12:23:071:51:127:1018:32
7:39
#8346
30K
18.64 mi12:48:032:16:087:1824:56
8:02
#8865
20M
20.00 mi12:59:212:27:267:2211:18
8:19
#9169
21M
21.00 mi13:08:202:36:257:278:59
8:59
#9391
35K
21.75 mi13:14:242:42:297:286:04
8:07
#9502
23M
23.00 mi13:25:012:53:067:3210:37
8:29
#9723
24M
24.00 mi13:32:573:01:027:337:56
7:56
#9753
40K
24.85 mi13:40:233:08:287:357:26
8:42
#9928
25.2M
25.20 mi13:43:203:11:257:362:57
8:33
#9912
Finish
26.22 mi13:51:183:19:237:377:58
7:49
#9961
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi55183993998727(Top 31%)1318(Top 11%)1318(Top 24%)
10K6.21 mi3.10 mi6396-878550-151550-1517318(Top 26%)783(Top 6%)783(Top 14%)
15K9.32 mi3.11 mi7254-858770-220770-2208727(Top 31%)1318(Top 11%)1318(Top 24%)
20K12.43 mi3.11 mi7872-618979-209979-20910405(Top 37%)2156(Top 18%)2156(Top 39%)
Half13.11 mi0.68 mi7949-771010-311010-3110109(Top 36%)2015(Top 16%)2015(Top 37%)
25K15.53 mi2.42 mi8346-3971186-1761186-17611099(Top 39%)2632(Top 22%)2632(Top 48%)
30K18.64 mi3.11 mi8865-5191452-2661452-26611575(Top 41%)3076(Top 25%)3076(Top 56%)
20M20.00 mi1.36 mi9169-3041612-1601612-16012589(Top 44%)3736(Top 31%)3736(Top 68%)
21M21.00 mi1.00 mi9391-2221747-1351747-13513402(Top 47%)4308(Top 35%)4308(Top 79%)
35K21.75 mi0.75 mi9502-1111814-671814-6712996(Top 46%)4144(Top 34%)4144(Top 76%)
23M23.00 mi1.25 mi9723-2211965-1511965-15113181(Top 46%)4358(Top 36%)4358(Top 80%)
24M24.00 mi1.00 mi9753-302024-592024-5910780(Top 38%)3179(Top 26%)3179(Top 58%)
40K24.85 mi0.85 mi9928-1752140-1162140-11614579(Top 51%)5278(Top 43%)5278(Top 97%)
25.2M25.20 mi0.35 mi9912+162149-92149-99158(Top 32%)2595(Top 21%)2595(Top 47%)
Finish26.22 mi1.02 mi9961-492201-522201-5211576(Top 41%)3729(Top 30%)3729(Top 68%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21story building
+97ft-345ft

Overall

8727

Females

1318

F18-39

1318

5K→10K

3.1 - 6.2 mi

Top 26%
×5story building
+79ft-138ft

Overall

7318

Females

783

F18-39

783

10K→15K

6.2 - 9.3 mi

Top 31%
×3story building
+67ft-78ft

Overall

8727

Females

1318

F18-39

1318

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

10405

Females

2156

F18-39

2156

20K→Half

12.4 - 13.1 mi

Top 36%
×2story building
+19ft-37ft

Overall

10109

Females

2015

F18-39

2015

Half→25K

13.1 - 15.5 mi

Top 39%
×4story building
+66ft-88ft

Overall

11099

Females

2632

F18-39

2632

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

11575

Females

3076

F18-39

3076

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

12589

Females

3736

F18-39

3736

20M→21M

20.0 - 21.0 mi

Top 47%
×8story building
+106ft-24ft

Overall

13402

Females

4308

F18-39

4308

21M→35K

21.0 - 21.8 mi

Top 46%
×7story building
+17ft-86ft

Overall

12996

Females

4144

F18-39

4144

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

13181

Females

4358

F18-39

4358

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

10780

Females

3179

F18-39

3179

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

14579

Females

5278

F18-39

5278

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

9158

Females

2595

F18-39

2595

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

11576

Females

3729

F18-39

3729

Passing Analysis

Category:
Athletes Passed
611
Passed By
5053
Net Change
-4443
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5518
5K → 10K24902-878#5518#6396
10K → 15K23881-858#6396#7254
15K → 20K31649-618#7254#7872
20K → Half1087-77#7872#7949
Half → 25K44441-397#7949#8346
25K → 30K97616-519#8346#8865
30K → 20M38342-304#8865#9169
20M → 21M41263-222#9169#9391
21M → 35K34145-111#9391#9502
35K → 23M58279-221#9502#9723
23M → 24M82112-30#9723#9753
24M → 40K31205-175#9753#9928
40K → 25.2M4125+16#9928#9912
25.2M → Finish57106-49#9912#9961
TOTALS6115053-4443
📊

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