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BOSTON MARATHON 2025

Kristin Gendron

Bib: 12399•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 20%
Gender (Female)
#0 / 12228
Top 5%
Division (F18-39)
#0 / 5469
Top 9%
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
22:14
↑ 97↓ 3451.5%
10K· 6.21 mi
7:06/mi
44:16
↑ 79↓ 1380.4%
15K· 9.32 mi
7:04/mi
1:06:14
↑ 67↓ 78
20K· 12.43 mi
7:06/mi
1:28:17
↑ 106↓ 860.1%
Half· 13.11 mi
6:56/mi
1:33:01
↑ 19↓ 370.5%
25K· 15.53 mi
7:02/mi
1:50:04
↑ 66↓ 880.2%
30K· 18.64 mi
7:05/mi
2:12:04
↑ 181↓ 1480.2%
20M
7:06/mi
2:21:43
↑ 64↓ 500.2%
21M
7:15/mi
2:28:58
↑ 106↓ 241.6%
35K· 21.75 mi
6:49/mi
2:34:04
↑ 17↓ 861.7%
23M
7:01/mi
2:42:51
↑ 23↓ 630.6%
24M
6:47/mi
2:49:38
↓ 821.3%
40K· 24.85 mi
6:56/mi
2:55:34
↓ 200.3%
25.2M
7:24/mi
2:58:07
↑ 13↓ 160.2%
Finish· 26.22 mi
6:32/mi
3:04:46
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:33:01
Pace7:06 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:31:45
Pace7:00 /mi
📊Negative Split: 1.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:3822:147:0922:14
7:09
-
10K
6.21 mi11:11:4044:167:0722:02
7:06
-0:03
15K
9.32 mi11:33:381:06:147:0621:58
7:04
-0:02
20K
12.43 mi11:55:411:28:177:0622:03
7:06
+0:02
Half
13.11 mi12:00:251:33:017:064:44
6:56
-0:10
25K
15.53 mi12:17:281:50:047:0517:03
7:02
+0:06
30K
18.64 mi12:39:282:12:047:0522:00
7:05
+0:03
20M
20.00 mi12:49:072:21:437:059:39
7:06
+0:01
21M
21.00 mi12:56:222:28:587:067:15
7:15
+0:09
35K
21.75 mi13:01:282:34:047:055:06
6:49
-0:26
23M
23.00 mi13:10:152:42:517:058:47
7:01
+0:12
24M
24.00 mi13:17:022:49:387:046:47
6:47
-0:14
40K
24.85 mi13:22:582:55:347:045:56
6:56
+0:09
25.2M
25.20 mi13:25:312:58:077:042:33
7:24
+0:28
Finish
26.22 mi13:32:103:04:467:036:39
6:32
-0:52

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

6:32 /mi

Average Pace

7:03 /mi

Slowest Pace

7:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:54:58

95% of race

Time at Steady Pace

9:48

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:03 /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 mi10:49:3822:147:0922:14
7:09
#9113
10K
6.21 mi11:11:4044:167:0722:02
7:06
#8824
15K
9.32 mi11:33:381:06:147:0621:58
7:04
#8534
20K
12.43 mi11:55:411:28:177:0622:03
7:06
#8210
Half
13.11 mi12:00:251:33:017:064:44
6:56
#8132
25K
15.53 mi12:17:281:50:047:0517:03
7:02
#7829
30K
18.64 mi12:39:282:12:047:0522:00
7:05
#7243
20M
20.00 mi12:49:072:21:437:059:39
7:06
#6976
21M
21.00 mi12:56:222:28:587:067:15
7:15
#6660
35K
21.75 mi13:01:282:34:047:055:06
6:49
#6529
23M
23.00 mi13:10:152:42:517:058:47
7:01
#6306
24M
24.00 mi13:17:022:49:387:046:47
6:47
#6114
40K
24.85 mi13:22:582:55:347:045:56
6:56
#5966
25.2M
25.20 mi13:25:312:58:077:042:33
7:24
#5893
Finish
26.22 mi13:32:103:04:467:036:39
6:32
#5697
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9113140914098129(Top 29%)1081(Top 9%)1081(Top 20%)
10K6.21 mi3.10 mi8824+2891307+1021307+1028615(Top 30%)1217(Top 10%)1217(Top 22%)
15K9.32 mi3.11 mi8534+2901202+1051202+1058129(Top 29%)1081(Top 9%)1081(Top 20%)
20K12.43 mi3.11 mi8210+3241107+951107+957498(Top 26%)924(Top 8%)924(Top 17%)
Half13.11 mi0.68 mi8132+781079+281079+287183(Top 25%)807(Top 7%)807(Top 15%)
25K15.53 mi2.42 mi7829+303981+98981+986540(Top 23%)730(Top 6%)730(Top 13%)
30K18.64 mi3.11 mi7243+586845+136845+1365221(Top 18%)493(Top 4%)493(Top 9%)
20M20.00 mi1.36 mi6976+267802+43802+434703(Top 17%)441(Top 4%)441(Top 8%)
21M21.00 mi1.00 mi6660+316739+63739+633419(Top 12%)277(Top 2%)277(Top 5%)
35K21.75 mi0.75 mi6529+131719+20719+204268(Top 15%)449(Top 4%)449(Top 8%)
23M23.00 mi1.25 mi6306+223682+37682+373887(Top 14%)392(Top 3%)392(Top 7%)
24M24.00 mi1.00 mi6114+192651+31651+313453(Top 12%)350(Top 3%)350(Top 6%)
40K24.85 mi0.85 mi5966+148631+20631+203613(Top 13%)408(Top 3%)408(Top 7%)
25.2M25.20 mi0.35 mi5893+73621+10621+103030(Top 11%)333(Top 3%)333(Top 6%)
Finish26.22 mi1.02 mi5697+196593+28593+282982(Top 10%)315(Top 3%)315(Top 6%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21story building
+97ft-345ft

Overall

8129

Females

1081

F18-39

1081

5K→10K

3.1 - 6.2 mi

Top 30%
×5story building
+79ft-138ft

Overall

8615

Females

1217

F18-39

1217

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+67ft-78ft

Overall

8129

Females

1081

F18-39

1081

15K→20K

9.3 - 12.4 mi

Top 26%
×5story building
+106ft-86ft

Overall

7498

Females

924

F18-39

924

20K→Half

12.4 - 13.1 mi

Top 25%
×2story building
+19ft-37ft

Overall

7183

Females

807

F18-39

807

Half→25K

13.1 - 15.5 mi

Top 23%
×4story building
+66ft-88ft

Overall

6540

Females

730

F18-39

730

25K→30K

15.5 - 18.6 mi

Top 18%
×9story building
+181ft-148ft

Overall

5221

Females

493

F18-39

493

30K→20M

18.6 - 20.0 mi

Top 17%
×5story building
+64ft-50ft

Overall

4703

Females

441

F18-39

441

20M→21M

20.0 - 21.0 mi

Top 12%
×8story building
+106ft-24ft

Overall

3419

Females

277

F18-39

277

21M→35K

21.0 - 21.8 mi

Top 15%
×7story building
+17ft-86ft

Overall

4268

Females

449

F18-39

449

35K→23M

21.8 - 23.0 mi

Top 14%
×5story building
+23ft-63ft

Overall

3887

Females

392

F18-39

392

23M→24M

23.0 - 24.0 mi

Top 12%
×6story building
+12ft-82ft

Overall

3453

Females

350

F18-39

350

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3613

Females

408

F18-39

408

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3030

Females

333

F18-39

333

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2story building
+22ft-21ft

Overall

2982

Females

315

F18-39

315

Passing Analysis

Category:
Athletes Passed
3617
Passed By
201
Net Change
+3416
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9113
5K → 10K38394+289#9113#8824
10K → 15K34454+290#8824#8534
15K → 20K34824+324#8534#8210
20K → Half791+78#8210#8132
Half → 25K31411+303#8132#7829
25K → 30K5893+586#7829#7243
30K → 20M2692+267#7243#6976
20M → 21M3171+316#6976#6660
21M → 35K1332+131#6660#6529
35K → 23M2263+223#6529#6306
23M → 24M1931+192#6306#6114
24M → 40K1502+148#6114#5966
40K → 25.2M752+73#5966#5893
25.2M → Finish1971+196#5893#5697
TOTALS3617201+3416
📊

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