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BOSTON MARATHON 2025

Alexandra Walker

Bib: 10351•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 23%
Gender (Female)
#0 / 12228
Top 7%
Division (F18-39)
#0 / 5469
Top 13%
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
7:09/mi
22:12
↑ 97↓ 3451.5%
10K· 6.21 mi
7:06/mi
44:14
↑ 79↓ 1380.4%
15K· 9.32 mi
6:58/mi
1:05:52
↑ 67↓ 78
20K· 12.43 mi
7:09/mi
1:28:06
↑ 106↓ 860.1%
Half· 13.11 mi
7:05/mi
1:32:56
↑ 19↓ 370.5%
25K· 15.53 mi
7:13/mi
1:50:27
↑ 66↓ 880.2%
30K· 18.64 mi
7:26/mi
2:13:32
↑ 181↓ 1480.2%
20M
7:17/mi
2:23:26
↑ 64↓ 500.2%
21M
7:47/mi
2:31:13
↑ 106↓ 241.6%
35K· 21.75 mi
7:04/mi
2:36:30
↑ 17↓ 861.7%
23M
7:13/mi
2:45:32
↑ 23↓ 630.6%
24M
6:59/mi
2:52:31
↓ 821.3%
40K· 24.85 mi
6:55/mi
2:58:26
↓ 200.3%
25.2M
7:00/mi
3:00:51
↑ 13↓ 160.2%
Finish· 26.22 mi
7:00/mi
3:07:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:56
Pace7:05 /mi
2nd Half
Distance13.11 mi
Time1:35:03
Pace7:15 /mi
📊Positive Split: 2.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:4522:127:0922:12
7:09
-
10K
6.21 mi11:12:4744:147:0722:02
7:06
-0:03
15K
9.32 mi11:34:251:05:527:0421:38
6:58
-0:08
20K
12.43 mi11:56:391:28:067:0522:14
7:09
+0:11
Half
13.11 mi12:01:291:32:567:054:50
7:05
-0:04
25K
15.53 mi12:19:001:50:277:0717:31
7:13
+0:08
30K
18.64 mi12:42:052:13:327:1023:05
7:26
+0:13
20M
20.00 mi12:51:592:23:267:109:54
7:17
-0:09
21M
21.00 mi12:59:462:31:137:127:47
7:47
+0:30
35K
21.75 mi13:05:032:36:307:125:17
7:04
-0:43
23M
23.00 mi13:14:052:45:327:129:02
7:13
+0:09
24M
24.00 mi13:21:042:52:317:116:59
6:59
-0:14
40K
24.85 mi13:26:592:58:267:115:55
6:55
-0:04
25.2M
25.20 mi13:29:243:00:517:112:25
7:00
+0:05
Finish
26.22 mi13:36:323:07:597:107:08
7:00
0:00

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

6:55 /mi

Average Pace

7:10 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:00:12

96% of race

Time at Steady Pace

7:47

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:10 /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 mi10:50:4522:127:0922:12
7:09
#9035
10K
6.21 mi11:12:4744:147:0722:02
7:06
#8779
15K
9.32 mi11:34:251:05:527:0421:38
6:58
#8256
20K
12.43 mi11:56:391:28:067:0522:14
7:09
#8103
Half
13.11 mi12:01:291:32:567:054:50
7:05
#8100
25K
15.53 mi12:19:001:50:277:0717:31
7:13
#7986
30K
18.64 mi12:42:052:13:327:1023:05
7:26
#7775
20M
20.00 mi12:51:592:23:267:109:54
7:17
#7549
21M
21.00 mi12:59:462:31:137:127:47
7:47
#7390
35K
21.75 mi13:05:032:36:307:125:17
7:04
#7289
23M
23.00 mi13:14:052:45:327:129:02
7:13
#7093
24M
24.00 mi13:21:042:52:317:116:59
6:59
#6924
40K
24.85 mi13:26:592:58:267:115:55
6:55
#6712
25.2M
25.20 mi13:29:243:00:517:112:25
7:00
#6569
Finish
26.22 mi13:36:323:07:597:107:08
7:00
#6486
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9035138013807402(Top 26%)839(Top 7%)839(Top 15%)
10K6.21 mi3.10 mi8779+2561287+931287+938619(Top 30%)1221(Top 10%)1221(Top 22%)
15K9.32 mi3.11 mi8256+5231099+1881099+1887402(Top 26%)839(Top 7%)839(Top 15%)
20K12.43 mi3.11 mi8103+1531060+391060+397873(Top 28%)1058(Top 9%)1058(Top 19%)
Half13.11 mi0.68 mi8100+31066-61066-68210(Top 29%)1148(Top 9%)1148(Top 21%)
25K15.53 mi2.42 mi7986+1141048+181048+187785(Top 27%)1131(Top 9%)1131(Top 21%)
30K18.64 mi3.11 mi7775+2111017+311017+317241(Top 25%)1107(Top 9%)1107(Top 20%)
20M20.00 mi1.36 mi7549+226980+37980+375724(Top 20%)717(Top 6%)717(Top 13%)
21M21.00 mi1.00 mi7390+159953+27953+276119(Top 22%)964(Top 8%)964(Top 18%)
35K21.75 mi0.75 mi7289+101947+6947+65821(Top 20%)863(Top 7%)863(Top 16%)
23M23.00 mi1.25 mi7093+196917+30917+304994(Top 18%)671(Top 5%)671(Top 12%)
24M24.00 mi1.00 mi6924+169893+24893+244580(Top 16%)605(Top 5%)605(Top 11%)
40K24.85 mi0.85 mi6712+212850+43850+433507(Top 12%)387(Top 3%)387(Top 7%)
25.2M25.20 mi0.35 mi6569+143823+27823+271433(Top 5%)120(Top 1.0%)120(Top 2%)
Finish26.22 mi1.02 mi6486+83829-6829-65786(Top 20%)1181(Top 10%)1181(Top 22%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21story building
+97ft-345ft

Overall

7402

Females

839

F18-39

839

5K→10K

3.1 - 6.2 mi

Top 30%
×5story building
+79ft-138ft

Overall

8619

Females

1221

F18-39

1221

10K→15K

6.2 - 9.3 mi

Top 26%
×3story building
+67ft-78ft

Overall

7402

Females

839

F18-39

839

15K→20K

9.3 - 12.4 mi

Top 28%
×5story building
+106ft-86ft

Overall

7873

Females

1058

F18-39

1058

20K→Half

12.4 - 13.1 mi

Top 29%
×2story building
+19ft-37ft

Overall

8210

Females

1148

F18-39

1148

Half→25K

13.1 - 15.5 mi

Top 27%
×4story building
+66ft-88ft

Overall

7785

Females

1131

F18-39

1131

25K→30K

15.5 - 18.6 mi

Top 25%
×9story building
+181ft-148ft

Overall

7241

Females

1107

F18-39

1107

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5724

Females

717

F18-39

717

20M→21M

20.0 - 21.0 mi

Top 22%
×8story building
+106ft-24ft

Overall

6119

Females

964

F18-39

964

21M→35K

21.0 - 21.8 mi

Top 20%
×7story building
+17ft-86ft

Overall

5821

Females

863

F18-39

863

35K→23M

21.8 - 23.0 mi

Top 18%
×5story building
+23ft-63ft

Overall

4994

Females

671

F18-39

671

23M→24M

23.0 - 24.0 mi

Top 16%
×6story building
+12ft-82ft

Overall

4580

Females

605

F18-39

605

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3507

Females

387

F18-39

387

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1433

Females

120

F18-39

120

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2story building
+22ft-21ft

Overall

5786

Females

1181

F18-39

1181

Passing Analysis

Category:
Athletes Passed
2977
Passed By
428
Net Change
+2549
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9035
5K → 10K360104+256#9035#8779
10K → 15K5318+523#8779#8256
15K → 20K22370+153#8256#8103
20K → Half2825+3#8103#8100
Half → 25K18571+114#8100#7986
25K → 30K28978+211#7986#7775
30K → 20M23610+226#7775#7549
20M → 21M1678+159#7549#7390
21M → 35K1087+101#7390#7289
35K → 23M20610+196#7289#7093
23M → 24M1745+169#7093#6924
24M → 40K2142+212#6924#6712
40K → 25.2M1430+143#6712#6569
25.2M → Finish11330+83#6569#6486
TOTALS2977428+2549
📊

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