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BOSTON MARATHON 2025

Blanca Spence

Bib: 11874•F

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 22%
Gender (Female)
#0 / 12228
Top 6%
Masters (Masters Women)
#0 / 6759
Top 2%
Division (F40-44)
#0 / 1718
Top 4%
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
7:03/mi
21:53
↑ 97↓ 3451.5%
10K· 6.21 mi
6:50/mi
43:06
↑ 79↓ 1380.4%
15K· 9.32 mi
7:00/mi
1:04:51
↑ 67↓ 78
20K· 12.43 mi
7:10/mi
1:27:06
↑ 106↓ 860.1%
Half· 13.11 mi
7:02/mi
1:31:54
↑ 19↓ 370.5%
25K· 15.53 mi
7:09/mi
1:49:14
↑ 66↓ 880.2%
30K· 18.64 mi
7:28/mi
2:12:26
↑ 181↓ 1480.2%
20M
7:20/mi
2:22:24
↑ 64↓ 500.2%
21M
7:53/mi
2:30:17
↑ 106↓ 241.6%
35K· 21.75 mi
6:49/mi
2:35:23
↑ 17↓ 861.7%
23M
7:08/mi
2:44:19
↑ 23↓ 630.6%
24M
7:10/mi
2:51:29
↓ 821.3%
40K· 24.85 mi
7:16/mi
2:57:42
↓ 200.3%
25.2M
7:53/mi
3:00:25
↑ 13↓ 160.2%
Finish· 26.22 mi
7:04/mi
3:07:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:54
Pace7:01 /mi
2nd Half
Distance13.11 mi
Time1:35:43
Pace7:18 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:1221:537:0321:53
7:03
-
10K
6.21 mi11:10:2543:066:5621:13
6:50
-0:13
15K
9.32 mi11:32:101:04:516:5721:45
7:00
+0:10
20K
12.43 mi11:54:251:27:067:0122:15
7:10
+0:10
Half
13.11 mi11:59:131:31:547:014:48
7:02
-0:08
25K
15.53 mi12:16:331:49:147:0217:20
7:09
+0:07
30K
18.64 mi12:39:452:12:267:0623:12
7:28
+0:19
20M
20.00 mi12:49:432:22:247:079:58
7:20
-0:08
21M
21.00 mi12:57:362:30:177:097:53
7:53
+0:33
35K
21.75 mi13:02:422:35:237:095:06
6:49
-1:04
23M
23.00 mi13:11:382:44:197:098:56
7:08
+0:19
24M
24.00 mi13:18:482:51:297:097:10
7:10
+0:02
40K
24.85 mi13:25:012:57:427:096:13
7:16
+0:06
25.2M
25.20 mi13:27:443:00:257:102:43
7:53
+0:37
Finish
26.22 mi13:34:563:07:377:107:12
7:04
-0:49

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

6:49 /mi

Average Pace

7:10 /mi

Slowest Pace

7:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:57:01

94% of race

Time at Steady Pace

10:36

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:09 /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 mi10:49:1221:537:0321:53
7:03
#8172
10K
6.21 mi11:10:2543:066:5621:13
6:50
#7415
15K
9.32 mi11:32:101:04:516:5721:45
7:00
#7490
20K
12.43 mi11:54:251:27:067:0122:15
7:10
#7562
Half
13.11 mi11:59:131:31:547:014:48
7:02
#7565
25K
15.53 mi12:16:331:49:147:0217:20
7:09
#7462
30K
18.64 mi12:39:452:12:267:0623:12
7:28
#7382
20M
20.00 mi12:49:432:22:247:079:58
7:20
#7196
21M
21.00 mi12:57:362:30:177:097:53
7:53
#7103
35K
21.75 mi13:02:422:35:237:095:06
6:49
#6963
23M
23.00 mi13:11:382:44:197:098:56
7:08
#6706
24M
24.00 mi13:18:482:51:297:097:10
7:10
#6591
40K
24.85 mi13:25:012:57:427:096:13
7:16
#6500
25.2M
25.20 mi13:27:443:00:257:102:43
7:53
#6445
Finish
26.22 mi13:34:563:07:377:107:12
7:04
#6380
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi8172104010407647(Top 27%)912(Top 7%)912(Top 53%)
10K6.21 mi3.10 mi7415+757801+239801+2396711(Top 24%)644(Top 5%)644(Top 37%)
15K9.32 mi3.11 mi7490-75836-35836-357647(Top 27%)912(Top 7%)912(Top 53%)
20K12.43 mi3.11 mi7562-72869-33869-337910(Top 28%)1072(Top 9%)1072(Top 62%)
Half13.11 mi0.68 mi7565-3876-7876-77868(Top 28%)1027(Top 8%)1027(Top 60%)
25K15.53 mi2.42 mi7462+103859+17859+177273(Top 26%)948(Top 8%)948(Top 55%)
30K18.64 mi3.11 mi7382+80881-22881-227526(Top 26%)1209(Top 10%)1209(Top 70%)
20M20.00 mi1.36 mi7196+186859+22859+226015(Top 21%)788(Top 6%)788(Top 46%)
21M21.00 mi1.00 mi7103+93862-3862-36711(Top 24%)1180(Top 10%)1180(Top 69%)
35K21.75 mi0.75 mi6963+140832+30832+304274(Top 15%)455(Top 4%)455(Top 26%)
23M23.00 mi1.25 mi6706+257801+31801+314544(Top 16%)550(Top 4%)550(Top 32%)
24M24.00 mi1.00 mi6591+115792+9792+95635(Top 20%)935(Top 8%)935(Top 54%)
40K24.85 mi0.85 mi6500+91785+7785+75510(Top 19%)936(Top 8%)936(Top 54%)
25.2M25.20 mi0.35 mi6445+55784+1784+15361(Top 19%)991(Top 8%)991(Top 58%)
Finish26.22 mi1.02 mi6380+657847846174(Top 22%)1307(Top 11%)1307(Top 76%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21story building
+97ft-345ft

Overall

7647

Females

912

F40-44

912

5K→10K

3.1 - 6.2 mi

Top 24%
×5story building
+79ft-138ft

Overall

6711

Females

644

F40-44

644

10K→15K

6.2 - 9.3 mi

Top 27%
×3story building
+67ft-78ft

Overall

7647

Females

912

F40-44

912

15K→20K

9.3 - 12.4 mi

Top 28%
×5story building
+106ft-86ft

Overall

7910

Females

1072

F40-44

1072

20K→Half

12.4 - 13.1 mi

Top 28%
×2story building
+19ft-37ft

Overall

7868

Females

1027

F40-44

1027

Half→25K

13.1 - 15.5 mi

Top 26%
×4story building
+66ft-88ft

Overall

7273

Females

948

F40-44

948

25K→30K

15.5 - 18.6 mi

Top 26%
×9story building
+181ft-148ft

Overall

7526

Females

1209

F40-44

1209

30K→20M

18.6 - 20.0 mi

Top 21%
×5story building
+64ft-50ft

Overall

6015

Females

788

F40-44

788

20M→21M

20.0 - 21.0 mi

Top 24%
×8story building
+106ft-24ft

Overall

6711

Females

1180

F40-44

1180

21M→35K

21.0 - 21.8 mi

Top 15%
×7story building
+17ft-86ft

Overall

4274

Females

455

F40-44

455

35K→23M

21.8 - 23.0 mi

Top 16%
×5story building
+23ft-63ft

Overall

4544

Females

550

F40-44

550

23M→24M

23.0 - 24.0 mi

Top 20%
×6story building
+12ft-82ft

Overall

5635

Females

935

F40-44

935

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5510

Females

936

F40-44

936

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5361

Females

991

F40-44

991

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2story building
+22ft-21ft

Overall

6174

Females

1307

F40-44

1307

Passing Analysis

Category:
Athletes Passed
2515
Passed By
723
Net Change
+1792
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8172
5K → 10K77619+757#8172#7415
10K → 15K117192-75#7415#7490
15K → 20K105177-72#7490#7562
20K → Half1922-3#7562#7565
Half → 25K16360+103#7565#7462
25K → 30K210130+80#7462#7382
30K → 20M1948+186#7382#7196
20M → 21M14047+93#7196#7103
21M → 35K1422+140#7103#6963
35K → 23M2647+257#6963#6706
23M → 24M12914+115#6706#6591
24M → 40K10514+91#6591#6500
40K → 25.2M627+55#6500#6445
25.2M → Finish8924+65#6445#6380
TOTALS2515723+1792
📊

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