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BOSTON MARATHON 2025

Lauren Sandberg

MO

Bib: 5031 F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 40%
Gender (Female)
#0 / 12228
Top 23%
Division (F18-39)
#0 / 5469
Top 40%
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:49/mi
24:16
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:51/mi
48:39
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:55/mi
1:13:15
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:45/mi
1:37:20
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:53/mi
1:42:43
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:44/mi
2:01:27
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:47/mi
2:25:38
↑ 181↓ 1480.2%
138 ft elev
20M
7:53/mi
2:36:21
↑ 64↓ 500.2%
148 ft elev
21M
8:11/mi
2:44:32
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:41/mi
2:50:17
↑ 17↓ 861.7%
156 ft elev
23M
7:49/mi
3:00:04
↑ 23↓ 630.6%
116 ft elev
24M
7:37/mi
3:07:41
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:43/mi
3:14:17
↓ 200.3%
20 ft elev
25.2M
7:53/mi
3:17:00
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
6:32/mi
3:23:39
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:42:437:50 /mi+1.7%
2nd Half
1:40:567:42 /mi✓ faster
Negative split — 1.7% faster in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
24:167:493.11 mi24:16
7:49
-
10K
48:397:503.10 mi24:23
7:51
+0:02
15K
1:13:157:523.11 mi24:36
7:55
+0:04
20K
1:37:207:503.11 mi24:05
7:45
-0:10
Half(13.11 mi)
1:42:437:500.68 mi5:23
7:53
+0:08
25K
2:01:277:492.42 mi18:44
7:44
-0:09
30K
2:25:387:493.11 mi24:11
7:47
+0:03
20M
2:36:217:491.36 mi10:43
7:53
+0:06
21M
2:44:327:501.00 mi8:11
8:11
+0:18
35K
2:50:177:500.75 mi5:45
7:41
-0:30
23M
3:00:047:501.25 mi9:47
7:49
+0:08
24M
3:07:417:491.00 mi7:37
7:37
-0:12
40K
3:14:177:490.85 mi6:36
7:43
+0:06
25.2M
3:17:007:490.35 mi2:43
7:53
+0:10
Finish(26.22 mi)
3:23:397:461.02 mi6:39
6:32
-1:21
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

6:32 /mi

Average Pace

7:46 /mi

Slowest Pace

8:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

14:16

7% of race

Time at Steady Pace

3:01:12

89% of race

Time at Slower Pace

8:11

4% of race

Average Pace: 7:46 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi14899445844581537547914791
10K3.10 mi15045-1464571-1134571-1131524346804680
15K3.11 mi15155-1104651-804651-801537547914791
20K3.11 mi14506+6494290+3614290+3611286734733473
Half(13.11 mi)0.68 mi14531-254307-174307-171501145944594
25K2.42 mi14034+4974065+2424065+2421176630063006
30K3.11 mi13194+8403664+4013664+401983422152215
20M1.36 mi12884+3103518+1463518+146966022942294
21M1.00 mi12584+3003383+1353383+135852319581958
35K0.75 mi12455+1293337+463337+461003626222622
23M1.25 mi12195+2603237+1003237+100871921382138
24M1.00 mi12005+1903177+603177+60857321352135
40K0.85 mi11833+1723120+573120+57827021192119
25.2M0.35 mi11695+1383058+623058+62542510551055
Finish(26.22 mi)1.02 mi11226+4692870+1882870+1882987320320

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15375

Females

4791

F18-39

4791

5K→10K

3.1 - 6.2 mi

Top 54%
×5story building
+79ft-138ft

Overall

15243

Females

4680

F18-39

4680

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15375

Females

4791

F18-39

4791

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

12867

Females

3473

F18-39

3473

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

15011

Females

4594

F18-39

4594

Half→25K

13.1 - 15.5 mi

Top 41%
×4story building
+66ft-88ft

Overall

11766

Females

3006

F18-39

3006

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

9834

Females

2215

F18-39

2215

30K→20M

18.6 - 20.0 mi

Top 34%
×5story building
+64ft-50ft

Overall

9660

Females

2294

F18-39

2294

20M→21M

20.0 - 21.0 mi

Top 30%
×8story building
+106ft-24ft

Overall

8523

Females

1958

F18-39

1958

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

10036

Females

2622

F18-39

2622

35K→23M

21.8 - 23.0 mi

Top 31%
×5story building
+23ft-63ft

Overall

8719

Females

2138

F18-39

2138

23M→24M

23.0 - 24.0 mi

Top 30%
×6story building
+12ft-82ft

Overall

8573

Females

2135

F18-39

2135

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8270

Females

2119

F18-39

2119

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5425

Females

1055

F18-39

1055

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2story building
+22ft-21ft

Overall

2987

Females

320

F18-39

320

Passing Analysis

Category:
▲Net Change
+0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#14899
5K → 10K
369223-146
#14899 → #15045
10K → 15K
286176-110
#15045 → #15155
15K → 20K
7656+649
#15155 → #14506
20K → Half
5631-25
#14506 → #14531
Half → 25K
6503+497
#14531 → #14034
25K → 30K
4844+840
#14034 → #13194
30K → 20M
4314+310
#13194 → #12884
20M → 21M
2302+300
#12884 → #12584
21M → 35K
13142+129
#12584 → #12455
35K → 23M
6266+260
#12455 → #12195
23M → 24M
8198+190
#12195 → #12005
24M → 40K
11183+172
#12005 → #11833
40K → 25.2M
1139+138
#11833 → #11695
25.2M → Finish
0469+469
#11695 → #11226
TOTALS
7734446+3673
#14899 → #11226

Passing Visualized

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