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BOSTON MARATHON 2025

Kristina Grieger

Bib: 10581•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 32%
Gender (Female)
#0 / 12228
Top 15%
Division (F18-39)
#0 / 5469
Top 27%
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
6:49/mi
21:10
↑ 97↓ 3451.5%
10K· 6.21 mi
6:54/mi
42:36
↑ 79↓ 1380.4%
15K· 9.32 mi
7:09/mi
1:04:49
↑ 67↓ 78
20K· 12.43 mi
7:16/mi
1:27:23
↑ 106↓ 860.1%
Half· 13.11 mi
7:09/mi
1:32:16
↑ 19↓ 370.5%
25K· 15.53 mi
7:35/mi
1:50:39
↑ 66↓ 880.2%
30K· 18.64 mi
7:58/mi
2:15:23
↑ 181↓ 1480.2%
20M
7:59/mi
2:26:14
↑ 64↓ 500.2%
21M
8:46/mi
2:35:00
↑ 106↓ 241.6%
35K· 21.75 mi
8:19/mi
2:41:13
↑ 17↓ 861.7%
23M
8:32/mi
2:51:54
↑ 23↓ 630.6%
24M
8:09/mi
3:00:03
↓ 821.3%
40K· 24.85 mi
7:42/mi
3:06:38
↓ 200.3%
25.2M
8:16/mi
3:09:29
↑ 13↓ 160.2%
Finish· 26.22 mi
7:19/mi
3:16:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:16
Pace7:02 /mi
2nd Half
Distance13.11 mi
Time1:44:40
Pace7:59 /mi
📊Positive Split: 13.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:0721:106:4921:10
6:49
-
10K
6.21 mi11:08:3342:366:5121:26
6:54
+0:05
15K
9.32 mi11:30:461:04:496:5722:13
7:09
+0:15
20K
12.43 mi11:53:201:27:237:0222:34
7:16
+0:07
Half
13.11 mi11:58:131:32:167:024:53
7:09
-0:07
25K
15.53 mi12:16:361:50:397:0718:23
7:35
+0:26
30K
18.64 mi12:41:202:15:237:1624:44
7:58
+0:23
20M
20.00 mi12:52:112:26:147:1910:51
7:59
+0:01
21M
21.00 mi13:00:572:35:007:238:46
8:46
+0:47
35K
21.75 mi13:07:102:41:137:256:13
8:19
-0:27
23M
23.00 mi13:17:512:51:547:2810:41
8:32
+0:13
24M
24.00 mi13:26:003:00:037:308:09
8:09
-0:23
40K
24.85 mi13:32:353:06:387:316:35
7:42
-0:27
25.2M
25.20 mi13:35:263:09:297:312:51
8:16
+0:34
Finish
26.22 mi13:42:533:16:567:317:27
7:19
-0:57

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

7:31 /mi

Slowest Pace

8:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:43

51% of race

Time at Steady Pace

1:00:33

31% of race

Time at Slower Pace

36:40

19% of race

Average Pace: 7:31 /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 mi10:47:0721:106:4921:10
6:49
#6433
10K
6.21 mi11:08:3342:366:5121:26
6:54
#6815
15K
9.32 mi11:30:461:04:496:5722:13
7:09
#7467
20K
12.43 mi11:53:201:27:237:0222:34
7:16
#7704
Half
13.11 mi11:58:131:32:167:024:53
7:09
#7748
25K
15.53 mi12:16:361:50:397:0718:23
7:35
#8093
30K
18.64 mi12:41:202:15:237:1624:44
7:58
#8538
20M
20.00 mi12:52:112:26:147:1910:51
7:59
#8625
21M
21.00 mi13:00:572:35:007:238:46
8:46
#8808
35K
21.75 mi13:07:102:41:137:256:13
8:19
#9032
23M
23.00 mi13:17:512:51:547:2810:41
8:32
#9271
24M
24.00 mi13:26:003:00:037:308:09
8:09
#9401
40K
24.85 mi13:32:353:06:387:316:35
7:42
#9318
25.2M
25.20 mi13:35:263:09:297:312:51
8:16
#9259
Finish
26.22 mi13:42:533:16:567:317:27
7:19
#9184
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi64335615618725(Top 31%)1316(Top 11%)1316(Top 24%)
10K6.21 mi3.10 mi6815-382656-95656-957234(Top 25%)758(Top 6%)758(Top 14%)
15K9.32 mi3.11 mi7467-652828-172828-1728725(Top 31%)1316(Top 11%)1316(Top 24%)
20K12.43 mi3.11 mi7704-237917-89917-898743(Top 31%)1420(Top 12%)1420(Top 26%)
Half13.11 mi0.68 mi7748-44935-18935-188818(Top 31%)1430(Top 12%)1430(Top 26%)
25K15.53 mi2.42 mi8093-3451090-1551090-15510611(Top 37%)2375(Top 19%)2375(Top 43%)
30K18.64 mi3.11 mi8538-4451317-2271317-22711108(Top 39%)2838(Top 23%)2838(Top 52%)
20M20.00 mi1.36 mi8625-871390-731390-7310354(Top 36%)2605(Top 21%)2605(Top 48%)
21M21.00 mi1.00 mi8808-1831491-1011491-10112092(Top 43%)3637(Top 30%)3637(Top 67%)
35K21.75 mi0.75 mi9032-2241607-1161607-11614302(Top 50%)4833(Top 40%)4833(Top 88%)
23M23.00 mi1.25 mi9271-2391758-1511758-15113523(Top 48%)4529(Top 37%)4529(Top 83%)
24M24.00 mi1.00 mi9401-1301850-921850-9212245(Top 43%)3915(Top 32%)3915(Top 72%)
40K24.85 mi0.85 mi9318+831855-51855-58110(Top 29%)2037(Top 17%)2037(Top 37%)
25.2M25.20 mi0.35 mi9259+591844+111844+117517(Top 26%)1857(Top 15%)1857(Top 34%)
Finish26.22 mi1.02 mi9184+751849-51849-57876(Top 28%)2017(Top 16%)2017(Top 37%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21story building
+97ft-345ft

Overall

8725

Females

1316

F18-39

1316

5K→10K

3.1 - 6.2 mi

Top 25%
×5story building
+79ft-138ft

Overall

7234

Females

758

F18-39

758

10K→15K

6.2 - 9.3 mi

Top 31%
×3story building
+67ft-78ft

Overall

8725

Females

1316

F18-39

1316

15K→20K

9.3 - 12.4 mi

Top 31%
×5story building
+106ft-86ft

Overall

8743

Females

1420

F18-39

1420

20K→Half

12.4 - 13.1 mi

Top 31%
×2story building
+19ft-37ft

Overall

8818

Females

1430

F18-39

1430

Half→25K

13.1 - 15.5 mi

Top 37%
×4story building
+66ft-88ft

Overall

10611

Females

2375

F18-39

2375

25K→30K

15.5 - 18.6 mi

Top 39%
×9story building
+181ft-148ft

Overall

11108

Females

2838

F18-39

2838

30K→20M

18.6 - 20.0 mi

Top 36%
×5story building
+64ft-50ft

Overall

10354

Females

2605

F18-39

2605

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

12092

Females

3637

F18-39

3637

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

14302

Females

4833

F18-39

4833

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

13523

Females

4529

F18-39

4529

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

12245

Females

3915

F18-39

3915

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8110

Females

2037

F18-39

2037

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

7517

Females

1857

F18-39

1857

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2story building
+22ft-21ft

Overall

7876

Females

2017

F18-39

2017

Passing Analysis

Category:
Athletes Passed
894
Passed By
3645
Net Change
-2751
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6433
5K → 10K82464-382#6433#6815
10K → 15K34686-652#6815#7467
15K → 20K69306-237#7467#7704
20K → Half1256-44#7704#7748
Half → 25K50395-345#7748#8093
25K → 30K96541-445#8093#8538
30K → 20M72159-87#8538#8625
20M → 21M49232-183#8625#8808
21M → 35K24248-224#8808#9032
35K → 23M58297-239#9032#9271
23M → 24M53183-130#9271#9401
24M → 40K11532+83#9401#9318
40K → 25.2M678+59#9318#9259
25.2M → Finish11338+75#9259#9184
TOTALS8943645-2751
📊

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