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BOSTON MARATHON 2025

Alexandra Ross

Bib: 2054•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 4%
Gender (Female)
#0 / 12228
Top 0.5%
Division (F18-39)
#0 / 5469
Top 1.0%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:46
Rank: #1211
Start → 5K
18:46 | 6:02/mi
10K· 6.21 mi
37:43
Rank: #1316 (-105)
5K → 10K
18:57 | 6:06/mi
15K· 9.32 mi
56:42
Rank: #1334 (-18)
10K → 15K
18:59 | 6:07/mi
20K· 12.43 mi
1:15:34
Rank: #1241 (+93)
15K → 20K
18:52 | 6:04/mi
Half· 13.11 mi
1:19:37
Rank: #1219 (+22)
20K → Half
4:03 | 5:56/mi
25K· 15.53 mi
1:34:23
Rank: #1185 (+34)
Half → 25K
14:46 | 6:05/mi
30K· 18.64 mi
1:53:32
Rank: #1093 (+92)
25K → 30K
19:09 | 6:10/mi
20M
2:01:59
Rank: #1043 (+50)
30K → 20M
8:27 | 6:13/mi
21M
2:08:50
Rank: #1046 (-3)
20M → 21M
6:51 | 6:51/mi
35K· 21.75 mi
2:13:36
Rank: #1061 (-15)
21M → 35K
4:46 | 6:22/mi
23M
2:21:53
Rank: #1073 (-12)
35K → 23M
8:17 | 6:37/mi
24M
2:28:26
Rank: #1105 (-32)
23M → 24M
6:33 | 6:33/mi
40K· 24.85 mi
2:34:10
Rank: #1125 (-20)
24M → 40K
5:44 | 6:42/mi
25.2M
2:36:40
Rank: #1137 (-12)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:43:18
Rank: #1156 (-19)
25.2M → Finish
6:38 | 6:31/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:37
Pace6:04 /mi
2nd Half
Distance13.11 mi
Time1:23:41
Pace6:23 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:2318:466:0218:46
6:02
-
10K
6.21 mi10:38:2037:436:0418:57
6:06
+0:04
15K
9.32 mi10:57:1956:426:0518:59
6:07
+0:01
20K
12.43 mi11:16:111:15:346:0518:52
6:04
-0:03
Half
13.11 mi11:20:141:19:376:044:03
5:56
-0:08
25K
15.53 mi11:35:001:34:236:0514:46
6:05
+0:09
30K
18.64 mi11:54:091:53:326:0519:09
6:10
+0:05
20M
20.00 mi12:02:362:01:596:068:27
6:13
+0:03
21M
21.00 mi12:09:272:08:506:086:51
6:51
+0:38
35K
21.75 mi12:14:132:13:366:094:46
6:22
-0:29
23M
23.00 mi12:22:302:21:536:108:17
6:37
+0:15
24M
24.00 mi12:29:032:28:266:116:33
6:33
-0:04
40K
24.85 mi12:34:472:34:106:125:44
6:42
+0:09
25.2M
25.20 mi12:37:172:36:406:132:30
7:15
+0:33
Finish
26.22 mi12:43:552:43:186:146:38
6:31
-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

5:56 /mi

Average Pace

6:14 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

22:49

14% of race

Time at Steady Pace

1:43:56

64% of race

Time at Slower Pace

36:33

22% of race

Average Pace: 6:14 /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 mi10:19:2318:466:0218:46
6:02
#1211
10K
6.21 mi10:38:2037:436:0418:57
6:06
#1316
15K
9.32 mi10:57:1956:426:0518:59
6:07
#1334
20K
12.43 mi11:16:111:15:346:0518:52
6:04
#1241
Half
13.11 mi11:20:141:19:376:044:03
5:56
#1219
25K
15.53 mi11:35:001:34:236:0514:46
6:05
#1185
30K
18.64 mi11:54:091:53:326:0519:09
6:10
#1093
20M
20.00 mi12:02:362:01:596:068:27
6:13
#1043
21M
21.00 mi12:09:272:08:506:086:51
6:51
#1046
35K
21.75 mi12:14:132:13:366:094:46
6:22
#1061
23M
23.00 mi12:22:302:21:536:108:17
6:37
#1073
24M
24.00 mi12:29:032:28:266:116:33
6:33
#1105
40K
24.85 mi12:34:472:34:106:125:44
6:42
#1125
25.2M
25.20 mi12:37:172:36:406:132:30
7:15
#1137
Finish
26.22 mi12:43:552:43:186:146:38
6:31
#1156
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi121161611441(Top 5%)65(Top 0.5%)65(Top 1%)
10K6.21 mi3.10 mi1316-10560+160+11474(Top 5%)68(Top 0.6%)68(Top 1%)
15K9.32 mi3.11 mi1334-1862-262-21441(Top 5%)65(Top 0.5%)65(Top 1%)
20K12.43 mi3.11 mi1241+9361+161+11080(Top 4%)57(Top 0.5%)57(Top 1%)
Half13.11 mi0.68 mi1219+2260+160+1981(Top 3%)48(Top 0.4%)48(Top 0.9%)
25K15.53 mi2.42 mi1185+3461-161-11071(Top 4%)57(Top 0.5%)57(Top 1%)
30K18.64 mi3.11 mi1093+9259+259+2828(Top 3%)48(Top 0.4%)48(Top 0.9%)
20M20.00 mi1.36 mi1043+5057+257+2785(Top 3%)39(Top 0.3%)39(Top 0.7%)
21M21.00 mi1.00 mi1046-356+156+11726(Top 6%)90(Top 0.7%)90(Top 2%)
35K21.75 mi0.75 mi1061-1557-157-11944(Top 7%)110(Top 0.9%)110(Top 2%)
23M23.00 mi1.25 mi1073-1257571918(Top 7%)116(Top 0.9%)116(Top 2%)
24M24.00 mi1.00 mi1105-3259-259-22288(Top 8%)160(Top 1%)160(Top 3%)
40K24.85 mi0.85 mi1125-2060-160-12429(Top 9%)194(Top 2%)194(Top 4%)
25.2M25.20 mi0.35 mi1137-1261-161-12396(Top 8%)239(Top 2%)239(Top 4%)
Finish26.22 mi1.02 mi1156-1962-162-12897(Top 10%)295(Top 2%)295(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1441

Females

65

F18-39

65

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1474

Females

68

F18-39

68

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1441

Females

65

F18-39

65

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

1080

Females

57

F18-39

57

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

981

Females

48

F18-39

48

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1071

Females

57

F18-39

57

25K→30K

15.5 - 18.6 mi

Top 3%
×9stories
+181ft-148ft

Overall

828

Females

48

F18-39

48

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

785

Females

39

F18-39

39

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1726

Females

90

F18-39

90

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1944

Females

110

F18-39

110

35K→23M

21.8 - 23.0 mi

Top 7%
×5stories
+23ft-63ft

Overall

1918

Females

116

F18-39

116

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2288

Females

160

F18-39

160

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2429

Females

194

F18-39

194

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2396

Females

239

F18-39

239

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2897

Females

295

F18-39

295

Passing Analysis

Category:
Athletes Passed
506
Passed By
451
Net Change
+55
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1211
5K → 10K34139-105#1211#1316
10K → 15K3250-18#1316#1334
15K → 20K10411+93#1334#1241
20K → Half220+22#1241#1219
Half → 25K5521+34#1219#1185
25K → 30K10412+92#1185#1093
30K → 20M533+50#1093#1043
20M → 21M2225-3#1043#1046
21M → 35K1328-15#1046#1061
35K → 23M3345-12#1061#1073
23M → 24M638-32#1073#1105
24M → 40K929-20#1105#1125
40K → 25.2M012-12#1125#1137
25.2M → Finish1938-19#1137#1156
TOTALS506451+55
📊

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