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BOSTON MARATHON 2025

Alexandra Macdonald

Bib: 9031•F

BC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 11%
Gender (Female)
#0 / 12228
Top 1%
Division (F18-39)
#0 / 5469
Top 3%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:07
Rank: #3671
Start → 5K
20:07 | 6:28/mi
10K· 6.21 mi
40:17
Rank: #3663 (+8)
5K → 10K
20:10 | 6:29/mi
15K· 9.32 mi
1:00:44
Rank: #3814 (-151)
10K → 15K
20:27 | 6:35/mi
20K· 12.43 mi
1:21:23
Rank: #3820 (-6)
15K → 20K
20:39 | 6:39/mi
Half· 13.11 mi
1:25:51
Rank: #3818 (+2)
20K → Half
4:28 | 6:33/mi
25K· 15.53 mi
1:41:50
Rank: #3728 (+90)
Half → 25K
15:59 | 6:36/mi
30K· 18.64 mi
2:03:05
Rank: #3668 (+60)
25K → 30K
21:15 | 6:50/mi
20M
2:12:30
Rank: #3620 (+48)
30K → 20M
9:25 | 6:56/mi
21M
2:19:52
Rank: #3617 (+3)
20M → 21M
7:22 | 7:22/mi
35K· 21.75 mi
2:24:41
Rank: #3529 (+88)
21M → 35K
4:49 | 6:26/mi
23M
2:33:17
Rank: #3438 (+91)
35K → 23M
8:36 | 6:52/mi
24M
2:39:54
Rank: #3360 (+78)
23M → 24M
6:37 | 6:37/mi
40K· 24.85 mi
2:45:41
Rank: #3292 (+68)
24M → 40K
5:47 | 6:46/mi
25.2M
2:48:05
Rank: #3228 (+64)
40K → 25.2M
2:24 | 6:58/mi
Finish· 26.22 mi
2:54:37
Rank: #3152 (+76)
25.2M → Finish
6:32 | 6:25/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:51
Pace6:33 /mi
2nd Half
Distance13.11 mi
Time1:28:46
Pace6:46 /mi
📊Positive Split: 3.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:1520:076:2820:07
6:28
-
10K
6.21 mi11:05:2540:176:2920:10
6:29
+0:01
15K
9.32 mi11:25:521:00:446:3120:27
6:35
+0:06
20K
12.43 mi11:46:311:21:236:3320:39
6:39
+0:04
Half
13.11 mi11:50:591:25:516:334:28
6:33
-0:06
25K
15.53 mi12:06:581:41:506:3315:59
6:36
+0:03
30K
18.64 mi12:28:132:03:056:3621:15
6:50
+0:14
20M
20.00 mi12:37:382:12:306:379:25
6:56
+0:06
21M
21.00 mi12:45:002:19:526:407:22
7:22
+0:26
35K
21.75 mi12:49:492:24:416:394:49
6:26
-0:56
23M
23.00 mi12:58:252:33:176:408:36
6:52
+0:26
24M
24.00 mi13:05:022:39:546:406:37
6:37
-0:15
40K
24.85 mi13:10:492:45:416:405:47
6:46
+0:09
25.2M
25.20 mi13:13:132:48:056:402:24
6:58
+0:12
Finish
26.22 mi13:19:452:54:376:406:32
6:25
-0:33

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

6:25 /mi

Average Pace

6:40 /mi

Slowest Pace

7:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:47:15

96% of race

Time at Steady Pace

7:22

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:40 /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 mi10:45:1520:076:2820:07
6:28
#3671
10K
6.21 mi11:05:2540:176:2920:10
6:29
#3663
15K
9.32 mi11:25:521:00:446:3120:27
6:35
#3814
20K
12.43 mi11:46:311:21:236:3320:39
6:39
#3820
Half
13.11 mi11:50:591:25:516:334:28
6:33
#3818
25K
15.53 mi12:06:581:41:506:3315:59
6:36
#3728
30K
18.64 mi12:28:132:03:056:3621:15
6:50
#3668
20M
20.00 mi12:37:382:12:306:379:25
6:56
#3620
21M
21.00 mi12:45:002:19:526:407:22
7:22
#3617
35K
21.75 mi12:49:492:24:416:394:49
6:26
#3529
23M
23.00 mi12:58:252:33:176:408:36
6:52
#3438
24M
24.00 mi13:05:022:39:546:406:37
6:37
#3360
40K
24.85 mi13:10:492:45:416:405:47
6:46
#3292
25.2M
25.20 mi13:13:132:48:056:402:24
6:58
#3228
Finish
26.22 mi13:19:452:54:376:406:32
6:25
#3152
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi36711831834106(Top 14%)236(Top 2%)236(Top 4%)
10K6.21 mi3.10 mi3663+8184-1184-13680(Top 13%)199(Top 2%)199(Top 4%)
15K9.32 mi3.11 mi3814-151208-24208-244106(Top 14%)236(Top 2%)236(Top 4%)
20K12.43 mi3.11 mi3820-6211-3211-33999(Top 14%)229(Top 2%)229(Top 4%)
Half13.11 mi0.68 mi3818+2209+2209+24073(Top 14%)229(Top 2%)229(Top 4%)
25K15.53 mi2.42 mi3728+90201+8201+83430(Top 12%)184(Top 2%)184(Top 3%)
30K18.64 mi3.11 mi3668+60198+3198+33695(Top 13%)264(Top 2%)264(Top 5%)
20M20.00 mi1.36 mi3620+48197+1197+13716(Top 13%)285(Top 2%)285(Top 5%)
21M21.00 mi1.00 mi3617+3203-6203-63973(Top 14%)355(Top 3%)355(Top 6%)
35K21.75 mi0.75 mi3529+88195+8195+82213(Top 8%)134(Top 1%)134(Top 2%)
23M23.00 mi1.25 mi3438+91191+4191+43081(Top 11%)254(Top 2%)254(Top 5%)
24M24.00 mi1.00 mi3360+78190+1190+12600(Top 9%)201(Top 2%)201(Top 4%)
40K24.85 mi0.85 mi3292+68186+4186+42711(Top 10%)235(Top 2%)235(Top 4%)
25.2M25.20 mi0.35 mi3228+64181+5181+51424(Top 5%)114(Top 0.9%)114(Top 2%)
Finish26.22 mi1.02 mi3152+76177+4177+42397(Top 8%)203(Top 2%)203(Top 4%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

4106

Females

236

F18-39

236

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3680

Females

199

F18-39

199

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

4106

Females

236

F18-39

236

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3999

Females

229

F18-39

229

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

4073

Females

229

F18-39

229

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3430

Females

184

F18-39

184

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3695

Females

264

F18-39

264

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3716

Females

285

F18-39

285

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

3973

Females

355

F18-39

355

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2213

Females

134

F18-39

134

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

3081

Females

254

F18-39

254

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2600

Females

201

F18-39

201

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2711

Females

235

F18-39

235

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1424

Females

114

F18-39

114

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2397

Females

203

F18-39

203

Passing Analysis

Category:
Athletes Passed
1204
Passed By
685
Net Change
+519
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3671
5K → 10K136128+8#3671#3663
10K → 15K55206-151#3663#3814
15K → 20K8692-6#3814#3820
20K → Half1816+2#3820#3818
Half → 25K11727+90#3818#3728
25K → 30K13676+60#3728#3668
30K → 20M8234+48#3668#3620
20M → 21M4845+3#3620#3617
21M → 35K891+88#3617#3529
35K → 23M11221+91#3529#3438
23M → 24M9113+78#3438#3360
24M → 40K7911+68#3360#3292
40K → 25.2M640+64#3292#3228
25.2M → Finish9115+76#3228#3152
TOTALS1204685+519
📊

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