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BOSTON MARATHON 2025

Selam Grimsrud

Bib: 10128•F

MN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 30%
Gender (Female)
#0 / 12228
Top 12%
Division (F18-39)
#0 / 5469
Top 23%
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
7:35/mi
23:33
↑ 97↓ 3451.5%
10K· 6.21 mi
7:29/mi
46:47
↑ 79↓ 1380.4%
15K· 9.32 mi
7:25/mi
1:09:49
↑ 67↓ 78
20K· 12.43 mi
7:23/mi
1:32:45
↑ 106↓ 860.1%
Half· 13.11 mi
7:24/mi
1:37:48
↑ 19↓ 370.5%
25K· 15.53 mi
7:25/mi
1:55:47
↑ 66↓ 880.2%
30K· 18.64 mi
7:20/mi
2:18:35
↑ 181↓ 1480.2%
20M
7:25/mi
2:28:40
↑ 64↓ 500.2%
21M
7:46/mi
2:36:26
↑ 106↓ 241.6%
35K· 21.75 mi
7:01/mi
2:41:41
↑ 17↓ 861.7%
23M
7:21/mi
2:50:53
↑ 23↓ 630.6%
24M
7:21/mi
2:58:14
↓ 821.3%
40K· 24.85 mi
7:26/mi
3:04:35
↓ 200.3%
25.2M
8:04/mi
3:07:22
↑ 13↓ 160.2%
Finish· 26.22 mi
6:59/mi
3:14:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:37:48
Pace7:28 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:36:41
Pace7:23 /mi
📊Negative Split: 1.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:2723:337:3523:33
7:35
-
10K
6.21 mi11:13:4146:477:3223:14
7:29
-0:06
15K
9.32 mi11:36:431:09:497:2923:02
7:25
-0:04
20K
12.43 mi11:59:391:32:457:2822:56
7:23
-0:02
Half
13.11 mi12:04:421:37:487:285:03
7:24
+0:01
25K
15.53 mi12:22:411:55:477:2717:59
7:25
+0:01
30K
18.64 mi12:45:292:18:357:2622:48
7:20
-0:05
20M
20.00 mi12:55:342:28:407:2610:05
7:25
+0:05
21M
21.00 mi13:03:202:36:267:277:46
7:46
+0:21
35K
21.75 mi13:08:352:41:417:265:15
7:01
-0:45
23M
23.00 mi13:17:472:50:537:269:12
7:21
+0:20
24M
24.00 mi13:25:082:58:147:267:21
7:21
0:00
40K
24.85 mi13:31:293:04:357:266:21
7:26
+0:05
25.2M
25.20 mi13:34:163:07:227:262:47
8:04
+0:38
Finish
26.22 mi13:41:233:14:297:257:07
6:59
-1:05

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

6:59 /mi

Average Pace

7:25 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:03:56

95% of race

Time at Steady Pace

10:33

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:25 /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 mi10:50:2723:337:3523:33
7:35
#12942
10K
6.21 mi11:13:4146:477:3223:14
7:29
#12387
15K
9.32 mi11:36:431:09:497:2923:02
7:25
#11895
20K
12.43 mi11:59:391:32:457:2822:56
7:23
#11341
Half
13.11 mi12:04:421:37:487:285:03
7:24
#11318
25K
15.53 mi12:22:411:55:477:2717:59
7:25
#10925
30K
18.64 mi12:45:292:18:357:2622:48
7:20
#10003
20M
20.00 mi12:55:342:28:407:2610:05
7:25
#9665
21M
21.00 mi13:03:202:36:267:277:46
7:46
#9396
35K
21.75 mi13:08:352:41:417:265:15
7:01
#9192
23M
23.00 mi13:17:472:50:537:269:12
7:21
#8909
24M
24.00 mi13:25:082:58:147:267:21
7:21
#8748
40K
24.85 mi13:31:293:04:357:266:21
7:26
#8603
25.2M
25.20 mi13:34:163:07:227:262:47
8:04
#8527
Finish
26.22 mi13:41:233:14:297:257:07
6:59
#8379
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi129423280328011001(Top 39%)2370(Top 19%)2370(Top 43%)
10K6.21 mi3.10 mi12387+5553002+2783002+27811902(Top 42%)2754(Top 23%)2754(Top 50%)
15K9.32 mi3.11 mi11895+4922764+2382764+23811001(Top 39%)2370(Top 19%)2370(Top 43%)
20K12.43 mi3.11 mi11341+5542519+2452519+2459742(Top 34%)1840(Top 15%)1840(Top 34%)
Half13.11 mi0.68 mi11318+232510+92510+910906(Top 38%)2348(Top 19%)2348(Top 43%)
25K15.53 mi2.42 mi10925+3932348+1622348+1629298(Top 33%)1769(Top 14%)1769(Top 32%)
30K18.64 mi3.11 mi10003+9221953+3951953+3956695(Top 24%)902(Top 7%)902(Top 16%)
20M20.00 mi1.36 mi9665+3381842+1111842+1116549(Top 23%)993(Top 8%)993(Top 18%)
21M21.00 mi1.00 mi9396+2691749+931749+936041(Top 21%)949(Top 8%)949(Top 17%)
35K21.75 mi0.75 mi9192+2041683+661683+665537(Top 19%)787(Top 6%)787(Top 14%)
23M23.00 mi1.25 mi8909+2831603+801603+805774(Top 20%)929(Top 8%)929(Top 17%)
24M24.00 mi1.00 mi8748+1611569+341569+346755(Top 24%)1364(Top 11%)1364(Top 25%)
40K24.85 mi0.85 mi8603+1451547+221547+226402(Top 23%)1301(Top 11%)1301(Top 24%)
25.2M25.20 mi0.35 mi8527+761534+131534+136398(Top 23%)1401(Top 11%)1401(Top 26%)
Finish26.22 mi1.02 mi8379+1481501+331501+335660(Top 20%)1126(Top 9%)1126(Top 21%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

11001

Females

2370

F18-39

2370

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

11902

Females

2754

F18-39

2754

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

11001

Females

2370

F18-39

2370

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9742

Females

1840

F18-39

1840

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10906

Females

2348

F18-39

2348

Half→25K

13.1 - 15.5 mi

Top 33%
×4story building
+66ft-88ft

Overall

9298

Females

1769

F18-39

1769

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6695

Females

902

F18-39

902

30K→20M

18.6 - 20.0 mi

Top 23%
×5story building
+64ft-50ft

Overall

6549

Females

993

F18-39

993

20M→21M

20.0 - 21.0 mi

Top 21%
×8story building
+106ft-24ft

Overall

6041

Females

949

F18-39

949

21M→35K

21.0 - 21.8 mi

Top 19%
×7story building
+17ft-86ft

Overall

5537

Females

787

F18-39

787

35K→23M

21.8 - 23.0 mi

Top 20%
×5story building
+23ft-63ft

Overall

5774

Females

929

F18-39

929

23M→24M

23.0 - 24.0 mi

Top 24%
×6story building
+12ft-82ft

Overall

6755

Females

1364

F18-39

1364

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6402

Females

1301

F18-39

1301

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6398

Females

1401

F18-39

1401

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2story building
+22ft-21ft

Overall

5660

Females

1126

F18-39

1126

Passing Analysis

Category:
Athletes Passed
4784*
Passed By
221
Net Change
+4563
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12942
5K → 10K64893+555#12942#12387
10K → 15K52129+492#12387#11895
15K → 20K56612+554#11895#11341
20K → Half4219+23#11341#11318
Half → 25K4018+393#11318#10925
25K → 30K922*0+922#10925#10003
30K → 20M3402+338#10003#9665
20M → 21M2745+269#9665#9396
21M → 35K2051+204#9396#9192
35K → 23M2885+283#9192#8909
23M → 24M17716+161#8909#8748
24M → 40K16116+145#8748#8603
40K → 25.2M815+76#8603#8527
25.2M → Finish15810+148#8527#8379
TOTALS4784*221+4563

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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