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BOSTON MARATHON 2025

Alexandra Ross

Bib: 12645•F

WA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 39%
Gender (Female)
#0 / 12228
Top 22%
Division (F18-39)
#0 / 5469
Top 39%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:10
Rank: #8941
Start → 5K
22:10 | 7:08/mi
10K· 6.21 mi
43:49
Rank: #8280 (+661)
5K → 10K
21:39 | 6:58/mi
15K· 9.32 mi
1:05:35
Rank: #8023 (+257)
10K → 15K
21:46 | 7:00/mi
20K· 12.43 mi
1:27:35
Rank: #7816 (+207)
15K → 20K
22:00 | 7:05/mi
Half· 13.11 mi
1:32:24
Rank: #7818 (-2)
20K → Half
4:49 | 7:04/mi
25K· 15.53 mi
1:49:41
Rank: #7662 (+156)
Half → 25K
17:17 | 7:08/mi
30K· 18.64 mi
2:13:48
Rank: #7880 (-218)
25K → 30K
24:07 | 7:46/mi
20M
2:24:50
Rank: #8065 (-185)
30K → 20M
11:02 | 8:07/mi
21M
2:33:40
Rank: #8282 (-217)
20M → 21M
8:50 | 8:50/mi
35K· 21.75 mi
2:39:51
Rank: #8477 (-195)
21M → 35K
6:11 | 8:16/mi
23M
2:50:40
Rank: #8812 (-335)
35K → 23M
10:49 | 8:38/mi
24M
3:00:22
Rank: #9506 (-694)
23M → 24M
9:42 | 9:42/mi
40K· 24.85 mi
3:08:45
Rank: #10022 (-516)
24M → 40K
8:23 | 9:48/mi
25.2M
3:12:52
Rank: #10376 (-354)
40K → 25.2M
4:07 | 11:56/mi
Finish· 26.22 mi
3:22:52
Rank: #10990 (-614)
25.2M → Finish
10:00 | 9:49/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:24
Pace7:03 /mi
2nd Half
Distance13.11 mi
Time1:50:28
Pace8:26 /mi
📊Positive Split: 19.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:4722:107:0822:10
7:08
-
10K
6.21 mi11:11:2643:497:0321:39
6:58
-0:10
15K
9.32 mi11:33:121:05:357:0221:46
7:00
+0:02
20K
12.43 mi11:55:121:27:357:0322:00
7:05
+0:05
Half
13.11 mi12:00:011:32:247:034:49
7:04
-0:01
25K
15.53 mi12:17:181:49:417:0417:17
7:08
+0:04
30K
18.64 mi12:41:252:13:487:1124:07
7:46
+0:38
20M
20.00 mi12:52:272:24:507:1411:02
8:07
+0:21
21M
21.00 mi13:01:172:33:407:198:50
8:50
+0:43
35K
21.75 mi13:07:282:39:517:216:11
8:16
-0:34
23M
23.00 mi13:18:172:50:407:2510:49
8:38
+0:22
24M
24.00 mi13:27:593:00:227:319:42
9:42
+1:04
40K
24.85 mi13:36:223:08:457:368:23
9:48
+0:06
25.2M
25.20 mi13:40:293:12:527:394:07
11:56
+2:08
Finish
26.22 mi13:50:293:22:527:4510:00
9:49
-2:07

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

6:58 /mi

Average Pace

7:45 /mi

Slowest Pace

11:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:41

54% of race

Time at Steady Pace

52:09

26% of race

Time at Slower Pace

41:02

20% of race

Average Pace: 7:44 /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 mi10:49:4722:107:0822:10
7:08
#8941
10K
6.21 mi11:11:2643:497:0321:39
6:58
#8280
15K
9.32 mi11:33:121:05:357:0221:46
7:00
#8023
20K
12.43 mi11:55:121:27:357:0322:00
7:05
#7816
Half
13.11 mi12:00:011:32:247:034:49
7:04
#7818
25K
15.53 mi12:17:181:49:417:0417:17
7:08
#7662
30K
18.64 mi12:41:252:13:487:1124:07
7:46
#7880
20M
20.00 mi12:52:272:24:507:1411:02
8:07
#8065
21M
21.00 mi13:01:172:33:407:198:50
8:50
#8282
35K
21.75 mi13:07:282:39:517:216:11
8:16
#8477
23M
23.00 mi13:18:172:50:407:2510:49
8:38
#8812
24M
24.00 mi13:27:593:00:227:319:42
9:42
#9506
40K
24.85 mi13:36:223:08:457:368:23
9:48
#10022
25.2M
25.20 mi13:40:293:12:527:394:07
11:56
#10376
Finish
26.22 mi13:50:293:22:527:4510:00
9:49
#10990
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8941135013507682(Top 27%)932(Top 8%)932(Top 17%)
10K6.21 mi3.10 mi8280+6611100+2501100+2507737(Top 27%)921(Top 8%)921(Top 17%)
15K9.32 mi3.11 mi8023+2571011+891011+897682(Top 27%)932(Top 8%)932(Top 17%)
20K12.43 mi3.11 mi7816+207960+51960+517425(Top 26%)905(Top 7%)905(Top 17%)
Half13.11 mi0.68 mi7818-29609608092(Top 28%)1136(Top 9%)1136(Top 21%)
25K15.53 mi2.42 mi7662+156930+30930+307175(Top 25%)919(Top 8%)919(Top 17%)
30K18.64 mi3.11 mi7880-2181058-1281058-1289653(Top 34%)2127(Top 17%)2127(Top 39%)
20M20.00 mi1.36 mi8065-1851170-1121170-11211255(Top 40%)3060(Top 25%)3060(Top 56%)
21M21.00 mi1.00 mi8282-2171275-1051275-10512514(Top 44%)3861(Top 32%)3861(Top 71%)
35K21.75 mi0.75 mi8477-1951385-1101385-11014044(Top 49%)4680(Top 38%)4680(Top 86%)
23M23.00 mi1.25 mi8812-3351559-1741559-17414184(Top 50%)4887(Top 40%)4887(Top 89%)
24M24.00 mi1.00 mi9506-6941902-3431902-34320382(Top 72%)8274(Top 68%)8274(Top 151%)
40K24.85 mi0.85 mi10022-5162183-2812183-28119828(Top 70%)8052(Top 66%)8052(Top 147%)
25.2M25.20 mi0.35 mi10376-3542379-1962379-19623102(Top 81%)9700(Top 79%)9700(Top 177%)
Finish26.22 mi1.02 mi10990-6142737-3582737-35822328(Top 79%)9333(Top 76%)9333(Top 171%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21stories
+97ft-345ft

Overall

7682

Females

932

F18-39

932

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

7737

Females

921

F18-39

921

10K→15K

6.2 - 9.3 mi

Top 27%
×3stories
+67ft-78ft

Overall

7682

Females

932

F18-39

932

15K→20K

9.3 - 12.4 mi

Top 26%
×5stories
+106ft-86ft

Overall

7425

Females

905

F18-39

905

20K→Half

12.4 - 13.1 mi

Top 28%
×2stories
+19ft-37ft

Overall

8092

Females

1136

F18-39

1136

Half→25K

13.1 - 15.5 mi

Top 25%
×4stories
+66ft-88ft

Overall

7175

Females

919

F18-39

919

25K→30K

15.5 - 18.6 mi

Top 34%
×9stories
+181ft-148ft

Overall

9653

Females

2127

F18-39

2127

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

11255

Females

3060

F18-39

3060

20M→21M

20.0 - 21.0 mi

Top 44%
×8stories
+106ft-24ft

Overall

12514

Females

3861

F18-39

3861

21M→35K

21.0 - 21.8 mi

Top 49%
×7stories
+17ft-86ft

Overall

14044

Females

4680

F18-39

4680

35K→23M

21.8 - 23.0 mi

Top 50%
×5stories
+23ft-63ft

Overall

14184

Females

4887

F18-39

4887

23M→24M

23.0 - 24.0 mi

Top 72%
×6stories
+12ft-82ft

Overall

20382

Females

8274

F18-39

8274

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

19828

Females

8052

F18-39

8052

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

23102

Females

9700

F18-39

9700

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2stories
+22ft-21ft

Overall

22328

Females

9333

F18-39

9333

Passing Analysis

Category:
Athletes Passed
1775
Passed By
3822
Net Change
-2049
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8941
5K → 10K69635+661#8941#8280
10K → 15K29538+257#8280#8023
15K → 20K24740+207#8023#7816
20K → Half3032-2#7816#7818
Half → 25K19438+156#7818#7662
25K → 30K126344-218#7662#7880
30K → 20M51236-185#7880#8065
20M → 21M40257-217#8065#8282
21M → 35K27222-195#8282#8477
35K → 23M49384-335#8477#8812
23M → 24M6700-694#8812#9506
24M → 40K7521-516#9506#10022
40K → 25.2M2356-354#10022#10376
25.2M → Finish5619-614#10376#10990
TOTALS17753822-2049
📊

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