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BOSTON MARATHON 2025

Alejandra Cortés

Bib: 17959 F CL

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 43%
Gender (Female)
#0 / 12228
Top 28%
Division (F18-39)
#0 / 5469
Top 46%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:51/mi
24:23
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:42/mi
48:19
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:41/mi
1:12:11
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:48/mi
1:36:25
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:37/mi
1:41:37
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:51/mi
2:00:40
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:11/mi
2:26:04
↑ 181↓ 1480.2%
138 ft elev
20M
8:08/mi
2:37:07
↑ 64↓ 500.2%
148 ft elev
21M
8:50/mi
2:45:57
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:38/mi
2:51:40
↑ 17↓ 861.7%
156 ft elev
23M
7:58/mi
3:01:38
↑ 23↓ 630.6%
116 ft elev
24M
7:35/mi
3:09:13
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:05/mi
3:16:08
↓ 200.3%
20 ft elev
25.2M
8:39/mi
3:19:07
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:33/mi
3:26:49
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:37
Pace7:45 /mi
2nd Half
Distance13.11 mi
Time1:45:12
Pace8:01 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:4224:237:5124:23
7:51
-
10K
6.21 mi11:38:3848:197:4723:56
7:42
-0:09
15K
9.32 mi12:02:301:12:117:4523:52
7:41
-0:01
20K
12.43 mi12:26:441:36:257:4624:14
7:48
+0:07
Half
13.11 mi12:31:561:41:377:455:12
7:37
-0:11
25K
15.53 mi12:50:592:00:407:4619:03
7:51
+0:14
30K
18.64 mi13:16:232:26:047:5025:24
8:11
+0:20
20M
20.00 mi13:27:262:37:077:5111:03
8:08
-0:03
21M
21.00 mi13:36:162:45:577:548:50
8:50
+0:42
35K
21.75 mi13:41:592:51:407:545:43
7:38
-1:12
23M
23.00 mi13:51:573:01:387:549:58
7:58
+0:20
24M
24.00 mi13:59:323:09:137:537:35
7:35
-0:23
40K
24.85 mi14:06:273:16:087:536:55
8:05
+0:30
25.2M
25.20 mi14:09:263:19:077:542:59
8:39
+0:34
Finish
26.22 mi14:17:083:26:497:547:42
7:33
-1:06

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

7:33 /mi

Average Pace

7:54 /mi

Slowest Pace

8:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:15:00

94% of race

Time at Steady Pace

11:49

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:53 /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 mi11:14:4224:237:5124:23
7:51
#15240
10K
6.21 mi11:38:3848:197:4723:56
7:42
#14551
15K
9.32 mi12:02:301:12:117:4523:52
7:41
#14155
20K
12.43 mi12:26:441:36:257:4624:14
7:48
#13889
Half
13.11 mi12:31:561:41:377:455:12
7:37
#13805
25K
15.53 mi12:50:592:00:407:4619:03
7:51
#13605
30K
18.64 mi13:16:232:26:047:5025:24
8:11
#13383
20M
20.00 mi13:27:262:37:077:5111:03
8:08
#13182
21M
21.00 mi13:36:162:45:577:548:50
8:50
#13111
35K
21.75 mi13:41:592:51:407:545:43
7:38
#12973
23M
23.00 mi13:51:573:01:387:549:58
7:58
#12739
24M
24.00 mi13:59:323:09:137:537:35
7:35
#12515
40K
24.85 mi14:06:273:16:087:536:55
8:05
#12415
25.2M
25.20 mi14:09:263:19:077:542:59
8:39
#12361
Finish
26.22 mi14:17:083:26:497:547:42
7:33
#12228
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi152404675467513331(Top 47%)3641(Top 30%)3641(Top 67%)
10K6.21 mi3.10 mi14551+6894266+4094266+40913931(Top 49%)3918(Top 32%)3918(Top 72%)
15K9.32 mi3.11 mi14155+3964060+2064060+20613331(Top 47%)3641(Top 30%)3641(Top 67%)
20K12.43 mi3.11 mi13889+2663947+1133947+11313283(Top 47%)3695(Top 30%)3695(Top 68%)
Half13.11 mi0.68 mi13805+843909+383909+3812817(Top 45%)3396(Top 28%)3396(Top 62%)
25K15.53 mi2.42 mi13605+2003821+883821+8812823(Top 45%)3574(Top 29%)3574(Top 65%)
30K18.64 mi3.11 mi13383+2223758+633758+6312646(Top 45%)3640(Top 30%)3640(Top 67%)
20M20.00 mi1.36 mi13182+2013681+773681+7711366(Top 40%)3120(Top 26%)3120(Top 57%)
21M21.00 mi1.00 mi13111+713667+143667+1412527(Top 44%)3874(Top 32%)3874(Top 71%)
35K21.75 mi0.75 mi12973+1383608+593608+599705(Top 34%)2480(Top 20%)2480(Top 45%)
23M23.00 mi1.25 mi12739+2343522+863522+869780(Top 34%)2636(Top 22%)2636(Top 48%)
24M24.00 mi1.00 mi12515+2243429+933429+938351(Top 29%)2043(Top 17%)2043(Top 37%)
40K24.85 mi0.85 mi12415+1003413+163413+1610812(Top 38%)3321(Top 27%)3321(Top 61%)
25.2M25.20 mi0.35 mi12361+543398+153398+159802(Top 35%)2928(Top 24%)2928(Top 54%)
Finish26.22 mi1.02 mi12228+1333369+293369+299642(Top 34%)2836(Top 23%)2836(Top 52%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

13331

Females

3641

F18-39

3641

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

13931

Females

3918

F18-39

3918

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

13331

Females

3641

F18-39

3641

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

13283

Females

3695

F18-39

3695

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

12817

Females

3396

F18-39

3396

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12823

Females

3574

F18-39

3574

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

12646

Females

3640

F18-39

3640

30K→20M

18.6 - 20.0 mi

Top 40%
×5story building
+64ft-50ft

Overall

11366

Females

3120

F18-39

3120

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

12527

Females

3874

F18-39

3874

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

9705

Females

2480

F18-39

2480

35K→23M

21.8 - 23.0 mi

Top 34%
×5story building
+23ft-63ft

Overall

9780

Females

2636

F18-39

2636

23M→24M

23.0 - 24.0 mi

Top 29%
×6story building
+12ft-82ft

Overall

8351

Females

2043

F18-39

2043

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10812

Females

3321

F18-39

3321

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9802

Females

2928

F18-39

2928

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

9642

Females

2836

F18-39

2836

Passing Analysis

Category:
Athletes Passed
3564
Passed By
552
Net Change
+3012
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15240
5K → 10K76677+689#15240#14551
10K → 15K44145+396#14551#14155
15K → 20K33973+266#14155#13889
20K → Half884+84#13889#13805
Half → 25K27676+200#13805#13605
25K → 30K344122+222#13605#13383
30K → 20M22221+201#13383#13182
20M → 21M13968+71#13182#13111
21M → 35K1424+138#13111#12973
35K → 23M2439+234#12973#12739
23M → 24M2328+224#12739#12515
24M → 40K11919+100#12515#12415
40K → 25.2M606+54#12415#12361
25.2M → Finish15320+133#12361#12228
TOTALS3564552+3012
📊

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